stopper bolts / external hexagon socket, internal hexagon socket / regular thread / mating surface at the head / steel, stainless steel / yinc Plated / A70, A90
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- Drawing / Specifications
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Dimensional Drawing
Standard Straight | Hex Socket Straight |
| M (Coarse) | Thread pitch | D | B | (C) | H | h | t | t1 | m | (L) | B1 | SR |
| 3 | 0.5 | 3.5 | 5.5 | 6.4 | 2 | 0.7 | 1.5 | 2 | 1.8 | — | — | 3.5 |
| 4 | 0.7 | 5 | 7 | 8.1 | 2.8 | 1.5 | 2.2 | 2.4 | 2.2 | 2 | 5 | |
| 5 | 0.8 | 6 | 8 | 9.2 | 3.5 | 2.3 | 3.2 | 2.8 | 2.5 | 6 | ||
| 6 | 1.0 | 8 | 10 | 11.5 | 4 | 2 | 2 | 2.6 | 3.6 | 3 | 3 | 8 |
| 8 | 1.25 | 10 | 13 | 15 | 5.5 | 2.8 | 5 | 4 | 4 | 10 | ||
| 10 | 1.5 | 13 | 17 | 19.6 | 7 | 3.2 | 6 | 5 | 5 | 13 | ||
| 12 | 1.75 | 15 | 19 | 21.9 | 8 | 3.5 | 7 | — | — | 15 |
Product Specifications
| Standard | Hex Socket Type | Stopper | Screw | [A]Accessory (Hex nut) | Resin, rubber How to mount | |||||||
| Straight Shape | SR Shape | Straight Shape | SR Shape | [M] Material | [ H ] Hardness | Operating temperature (°C) reference value | [M] Material | Strength class*2 | [S] Surface treatment | [M] Material | [S] Surface treatment | |
| UST | USRT | USTH | USRTH | Urethane (Black) (Ester urethane) | Shore A90 | -20 to 70 | EN 1.7220 Equiv. | 10.9 | Trivalent Chromate | EN 1.0038 Equiv. | Trivalent Chromate | Fused (Thermosetting bonded) |
| SUST | SUSRT | SUSTH | SUSRTH | EN 1.4301 Equiv. | A2-50 | — | EN 1.4301 Equiv. | — | ||||
| LUST | — | — | — | Low Repulsion Urethane (Gray) | Shore A70 | -20 to 70 | EN 1.7220 Equiv. | 10.9 | Bright chromate plating*3 | EN 1.0038 Equiv. | Trivalent Chromate | Fused (Thermosetting bonded) |
| PUST | — | PUSTH | — | Polyacetal (white) | — | 70 or less*1 | EN 1.7220 Equiv. | 10.9 | Trivalent Chromate | EN 1.0038 Equiv. | Trivalent Chromate | Bonded (Ambient temperature bonded) |
| PSST | — | PSSTH | — | EN 1.4301 Equiv. | A2-50 | — | EN 1.4301 Equiv. | — | ||||
| USTS | — | — | — | Silicon (light gray) | Shore A70 | 70 or less*1 | EN 1.7220 Equiv. | 10.9 | Trivalent Chromate | EN 1.0038 Equiv. | Trivalent Chromate | Fused (Thermosetting bonded) |
| SSTS | — | — | — | EN 1.4301 Equiv. | A2-50 | — | EN 1.4301 Equiv. | — | ||||
The operating temperature of polyacetal/silicon is affected by the adhesive.
* 2 Bright chromate for LUST is being switched to trivalent chromate.
[!] Only the urethane stopper part at the tip is not sold. (Standard products are not available)
Part Number Display Method
| Part Number | — | L |
| UST8 | — | 40 |
Specification Table
| Part Number | L Selection | |||||||||||||
| Type | M (Coarse) | |||||||||||||
| Standard | Hex Socket Type | 3 | 15 | 20 | 25 | 30 | 35 | 40 | ||||||
| (Standard) | (SR) | (Hex Socket) | (SR) | 4 | 15 | 20 | 25 | 30 | 35 | 40 | ||||
| UST | USRT | USTH | USRTH | |||||||||||
| SUST | SUSRT | SUSTH | SUSRTH | |||||||||||
| LUST | 5 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | |||||
| PUST | PUSTH | 6 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | ||||
| PSST | PSSTH | 8 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | ||||
| USTS | 10 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | ||||
| SSTS | 12 | 30 | 40 | 50 | 60 | 70 | ||||||||
Selection Supporting Information
| Mass (g) | Part Number | |||||||||||||||
| Reference values | ||||||||||||||||
| M | L | UST | SUST | LUST | PUST | USRT | SUSRT | PSST | USTS | SSTS | USTH | SUSTH | PUSTH | PSSTH | SUSRTH | USRTH |
| 3 | 15 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — |
| 20 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | |
| 25 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | |
| 30 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | |
| 35 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | |
| 40 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | |
| 4 | 15 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 20 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | |
| 25 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | |
| 30 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | |
| 35 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| 40 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| 5 | 15 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 4 | 4 |
| 20 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| 25 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 5 | 5 | |
| 30 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | |
| 35 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | |
| 40 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 15 | 7 | 7 | 7 | 6 | 7 | 7 | |
| 45 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | |
| 50 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| 6 | 20 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 |
| 25 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | |
| 30 | 9 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 8 | 8 | 9 | 8 | 2 | 8 | |
| 35 | 10 | 10 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | |
| 40 | 10 | 10 | 10 | 9 | 11 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | |
| 45 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | |
| 50 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 12 | |
| 60 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 13 | 15 | 14 | 13 | 14 | 13 | 13 | |
| 8 | 20 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 |
| 25 | 16 | 17 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | |
| 30 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | |
| 35 | 19 | 19 | 19 | 20 | 19 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 19 | 19 | 19 | |
| 40 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | |
| 45 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | |
| 50 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 25 | 24 | 24 | 23 | 23 | 24 | 24 | |
| 60 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | |
| 10 | 20 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | — | — | 28 | 28 | 28 | 27 | 27 | 27 |
| 25 | 32 | 31 | 31 | 32 | 32 | 31 | 31 | — | — | 30 | 30 | 30 | 30 | 30 | 30 | |
| 30 | 34 | 34 | 34 | 34 | 34 | 34 | 33 | — | — | 33 | 33 | 32 | 32 | 32 | 33 | |
| 35 | 36 | 36 | 36 | 36 | 37 | 36 | 35 | — | — | 35 | 34 | 35 | 35 | 35 | 35 | |
| 40 | 39 | 39 | 39 | 39 | 39 | 39 | 38 | — | — | 37 | 37 | 36 | 37 | 38 | 37 | |
| 45 | 41 | 42 | 41 | 42 | 42 | 41 | 41 | — | — | 40 | 40 | 40 | 39 | 40 | 40 | |
| 50 | 44 | 44 | 43 | 44 | 44 | 44 | 44 | — | — | 43 | 42 | 42 | 42 | 42 | 43 | |
| 60 | 49 | 49 | 48 | 48 | 49 | 49 | 48 | — | — | 47 | 47 | 47 | 46 | 46 | 47 | |
| 70 | 54 | 54 | 53 | 53 | 54 | 54 | 53 | — | — | 53 | 52 | 53 | 52 | 52 | 52 | |
| 12 | 30 | 48 | 49 | 48 | 48 | 49 | 48 | 48 | — | — | — | — | — | — | — | — |
| 40 | 56 | 55 | 55 | 55 | 56 | 56 | 55 | — | — | — | — | — | — | — | — | |
| 50 | 77 | 63 | 62 | 62 | 63 | 63 | 63 | — | — | — | — | — | — | — | — | |
| 60 | 70 | 70 | 70 | 70 | 70 | 70 | 69 | — | — | — | — | — | — | — | — | |
| 70 | 77 | 38 | 76 | 22 | 77 | 77 | 77 | — | — | — | — | — | — | — | — | |
Cautions/prohibitions
Tightening shaft force and fatigue limit when fastening with bolts
- Calculation of the appropriate tightening axial force when tightening bolts should be within the elastic range of up to 70% of the specified capacity for the torque method.
- The fatigue strength of the bolt due to repeated loading should not be over the allowable value.
- The objects tightened should not be caved in on the bolt and nut seating surfaces.
- The objects tightened should not be damaged due to tightening.
The torque method, torque gradient method, angle of rotation method, and elongation measurement method are available as bolt tightening methods, but the torque method is widely used because it is simple and easy to use.
Technical information
Bolt strength
1) When bolt is subjected to tensile load
Pt = σt × As:: (1)
= πd2 σt/4: (2)
Pt: Axial direction tensile load [N]
σb: Yield stress of bolts [N/mm2]
σt: Allowable stress of bolts [N/mm2]
(σt = σb/safety factor α)
As: Effective sectional area of bolts [mm2]
As = πd2/4
d: Effective diameter of bolts (root diameter)[m]
(Example) Find the appropriate size for a single hex socket head cap screw to repeatedly (pulsating) receive a tensile load of P = 1,960 N {200 kgf}. (The hex socket head cap screw is made of EN 1.7220 Equiv., 38 to 43HRC, and has a strength class of 12.9.)
(1) From equation
As = Pt/σt = 1,960/219.6 = 8.9 [mm2]
∴It is recommended to find an effective sectional area larger than this from the "Bolt Fatigue Strength" table below and select M5 of 14.2 [mm2].
In consideration of fatigue strength, select M6 with an allowable load of 2,087 N {213 kgf} from strength class 12.9 in the table.
2) When receiving tensile impact loads, such as stripper bolts, select based on fatigue strength. (Similarly, the stripper bolt that receives a load of 1,960 N {200 kgf} is made of EN 1.7220 Equiv., 33 to 38 HRC, and has a strength class of 10.9.)
According to the table "Fatigue Strength of Bolts" below, when the allowable load for strength class 10.9 is 1,960 N {200 kgf} or more, the M8 is 3,116 [N] {318 [kgf]}. Therefore, MSB10 with a shaft dia. of 10 mm with an M8 threaded section is selected. When the bolt is subjected to shear load, use a dowel pin in combination.
■ Unwin safety factor α based on tensile strength
| Material | Static load | Repeated load | Impact load | |
|---|---|---|---|---|
| Pulsating | Alternating | |||
| Steel | 3 | 5 | 8 | 12 |
| Cast iron | 4 | 6 | 10 | 15 |
| Copper, soft metals | 5 | 5 | 9 | 15 |
Allowable stress = standard strength / safety factor α
Standard strength: Yield stress for ductile materials (fracture stress for brittle materials)
The yield stress of strength class 12.9 is σb = 1,098 [N/mm2] {112 [kgf/mm2] }
Allowable stress σt = σb/safety factor (safety factor 5 from the above table "Unwin Safety Factor α Based on Tensile Strength")
=1098/5
= 219.6 [N/mm2] {22.4 [kgf/mm2] }
■Bolt fatigue strength (for screws >> fatigue strength of 2 million cycles)
| Nominal of thread | Effective sectional area As mm2 | Strength class | |||
|---|---|---|---|---|---|
| 12.9 | 10.9 | ||||
| Fatigue strength * | 12.9 | 10.9 | 10.9 | ||
| N/mm2 {kgf/mm2} | N {kgf} | N/mm2 {kgf/mm2} | N {kgf} | ||
| M4 | 8.78 | 128 {13.1} | 1117 {114} | 89 {9.1} | 774 {79} |
| M5 | 14.2 | 111 {11.3} | 1568 {160} | 76 {7.8} | 1088 {111} |
| M6 | 20.1 | 104 {10.6} | 2087 {213} | 73 {7.4} | 1460 {149} |
| M8 | 36.6 | 87 {8.9} | 3195 {326} | 85 {8.7} | 3116 {318} |
| M10 | 58 | 73 {7.4} | 4204 {429} | 72 {7.3} | 4145 {423} |
| M12 | 84.3 | 66 {6.7} | 5537 {565} | 64 {6.5} | 5370 {548} |
| M14 | 115 | 60 {6.1} | 6880 {702} | 59 {6} | 6762 {690} |
| M16 | 157 | 57 {5.8} | 8928 {911} | 56 {5.7} | 8771 {895} |
| M20 | 245 | 51 {5.2} | 12485 {1274} | 50 {5.1} | 12250 {1250} |
| M24 | 353 | 46 {4.7} | 16258 {1659} | 46 {4.7} | 16258 {1659} |
Fatigue strength* is extracted from "Estimated Fatigue Limits for Metric Threads for Machine Screws, Bolts, and Nuts" (Yamamoto) and revised.
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| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | RoHS | Tip Shape | Stopper Shape | Stopper Material (Color) | Screw Material | Screw Dia. (Coarse) M | Length L Dimension (mm) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
5.07 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 15 | |
5.07 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 20 | |
5.07 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 25 | |
5.07 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 30 | |
5.07 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 35 | |
5.07 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 3 | 40 | |
5.06 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 15 | |
5.06 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 20 | |
5.06 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 25 | |
5.06 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 30 | |
5.06 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 35 | |
5.06 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 4 | 40 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 15 | |
5.40 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 20 | |
5.40 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 25 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 30 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 35 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 40 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 45 | |
5.40 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 5 | 50 | |
5.88 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 20 | |
5.88 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 25 | |
5.88 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 30 | |
5.88 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 35 | |
5.88 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 40 | |
5.88 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 45 | |
5.88 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 50 | |
5.88 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 6 | 60 | |
6.38 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 20 | |
6.38 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 25 | |
6.38 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 30 | |
6.38 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 35 | |
6.38 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 40 | |
6.38 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 45 | |
6.38 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 50 | |
6.38 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 8 | 60 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 20 | |
6.55 € 2.42 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 25 | |
6.55 € 2.23 € | 1 | Available |
Same day
Stock | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 30 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 35 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 40 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 45 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 50 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 60 | |
6.55 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 10 | 70 | |
7.01 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 12 | 30 | |
7.01 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 12 | 40 | |
7.01 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 12 | 50 | |
7.01 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 12 | 60 | |
7.01 € | 1 | Available | 5 Days | - | Standard | Straight | Low Repulsion Urethane (Gray) | EN 1.7220 Equiv. | 12 | 70 | |
4.97 € | 1 | Available |
Same day
Stock | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 15 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 20 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 25 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 30 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 35 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 3 | 40 | |
4.97 € | 1 | Available |
Same day
Stock | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 4 | 15 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 4 | 20 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 4 | 25 | |
4.97 € | 1 | Available | 5 Days | 10 | Standard | Straight | Polyacetal (White) | EN 1.4301 Equiv. | 4 | 30 |
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General Information - Stopper Bolts
Stopper bolts selection details
- Material: steel, stainless steel
- Baffle head: PU, POM, MC nylon, silicone, hard rubber
- Coatings: burnished, chrome-plated, nickel-plated, zinc-plated
- Strength class: 8.8, 10.9
- Hardness of baffle head: Shore A57, Shore A70, Shore A90
- Thread diameter: M3 to M16
- Length: 10 mm to 70 mm
Description/Basics
MISUMI stopper bolts are generally used as damped and undamped stops for components and applications in mechanical engineering.
Undamped stopper bolts are protected against premature wear with hardened tips or heads. However, undamped stopper bolts may damage component surfaces. To protect the components to be stopped, a damped stopper bolt may protect the surface against damage with a rubber or plastic baffle head. In addition, MISUMI offers a stopper bolt with rubber or hard rubber in different Shore hardnesses, which can dampen the impact and reduce vibrations.
In addition to the standard threads, MISUMI also offers the stopper bolts with fine threads. The stopper bolts with fine threads enable finer adjustments compared to standard threads.
MISUMI offers Threaded Stopper Blocks as suitable and robust fastening for the assembly of the stopper bolts.
The stopper bolt can serve as a stop protection for workpiece carriers in order to protect them from damage. A stopper bolt with rubber can also reduce vibrations and oscillations to protect the goods to be transported. Often, stopper bolts are combined with industrial adjustable shock absorbers as end position damping to protect the damper from a hard end stop.
The stopper boltcan also be used alternatively in clamp.
Application Examples - Stopper Bolts
Application example: workpiece carrier
(1) Stopper bolt with rubber, (2) belt conveyor, (3) workpiece carrier
Application example: end stop
(1) Adjustable shock absorber, (2) Stopper bolt, (3) Threaded stopper blocks
Industrial Applications
Configure
Stock
-
- Show only stock items
Basic Attributes
-
Tip Shape
- Standard
- With Hex Socket
-
Stopper Shape
- SR Shape
- Straight
-
Stopper Material (Color)
- Low Repulsion Urethane (Gray)
- Polyacetal (White)
- Silicon (Light Gray)
- Urethane (Black)
-
Screw Material
- EN 1.4301 Equiv.
- EN 1.7220 Equiv.
-
Screw Dia. (Coarse) M
- 3
- 4
- 5
- 6
- 8
- 10
- 12
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Length L Dimension(mm)
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Type
- LUST
- PSST
- PSSTH
- PUST
- PUSTH
- SSTS
- SUSRT
- SUSRTH
- SUST
- SUSTH
- USRT
- USRTH
- UST
- USTH
- USTS
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Optional Attributes
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently Asked Questions (FAQ)
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Question:
Why do stopper bolts come in different colours?
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Answer:
The stopper bolt may have a different colouration. The reason for this is the hardening of the usable area, such as tip or head. Since the hardening is not necessary on the complete stopper bolt, it may show a colour gradient.
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Question:
Can a stopper bolt be installed with an angle?
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Answer:
The stopper bolt can be fastened with a mounting bracket for smaller loads. A more robust mounting bracket should be used for higher loads and an expected impact. MISUMI offers suitable brackets for stopper bolts.
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Question:
Are stopper bolts suitable for lateral impact?
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Answer:
Not every stopper bolt is intended for lateral stop. This could damage the stopper bolt. stopper bolts with rubber or plastic tip could lose the damping material. For a lateral stop, stopper bolts are self-adjusting, which MISUMI has also available in various materials and damping materials.
MISUMI has a corresponding note on the technical drawing of stopper bolts that may not be used on the side. -
Question:
Can a stopper bolt dampen vibrations?
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Answer:
A stopper bolt with a hard rubber tip is suitable for good vibration damping. Hard rubber is very low-return and absorbs more than conventional rubber, oscillations and vibrations. In addition, the oscillation amplitude is significantly shortened. If strong vibrations occur, a vibration damper can be used.
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Question:
What are PU stopper bolts resistant to?
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Answer:
Stopper bolts with polyurethane rubber (PU) have high mechanical strength and abrasion resistance. Any additional resistance of the rubber depends on whether it is an ether or ester polyurethane. This can be found in the PDF Properties of Polyurethane.
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Question:
How high is the heat resistance of the polyurethane rubber of the stopper bolt?
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Answer:
The stopper bolt with polyurethane rubber as a damping material should not be used at over ~+70°C. There is a risk that the material will deform plastically and the stopper bolt will fatigue prematurely.
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Question:
What can be used as a counter stop of a stopper bolt?
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Answer:
A stopper bolt can serve as a counter stop for a stopper bolt. These are hardened and therefore very low-wear. They can be pressed in or screwed together for ease of maintenance.
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