HARDLOCK Set Screw Standard – Normal Type Dimension Table

Dimensions in millimeters (mm)

Nominal size Pitch Set screw (1) Lock screw (2) Overall height Hexagonal socket *Common to (1) (2) Unit weight reference tightening torque(N.m) Proof torque (N.m)
S, H t1 H1 t2 (approx.) B (g) *Common to the set & the lock screw
S1 Coarse Fine Basic Tolerance Basic Tolerance l Basic Tolerance approx.
M8 1.25 – 10 ±0.29 ≥2.5 10 ±0.29 ≥5.0 17.5 4 0.02 4 9 – 11 16
0.1
M10 1.5 – 12 ±0.35 ≥3.0 12 ±0.35 ≥6.0 21 5 0.02 8 16 – 20 30
0.14
M12 1.75 1.5 16 ±0.35 ≥5.0 16 ±0.35 ≥8.0 29 6 0.02 16 27 – 33 52
0.14
M14 2 1.5 16 ±0.35 ≥4.0 16 ±0.35 ≥8.0 28 6 0.02 22 27 – 33 52
0.14
M16 2 1.5 20 ±0.42 ≥6.0 20 ±0.42 ≥10.0 36 8 0.03 37 63 – 77 120
0.18
M18 2.5 1.5 20 ±0.42 ≥6.0 20 ±0.42 ≥10.0 36 8 0.03 47 63 – 77 120
0.18
M20 2.5 1.5 20 ±0.42 ≥7.0 20 ±0.42 ≥12.0 35 10 0.03 52 90 – 110 220
0.18
M22 2.5 1.5 25 ±0.42 ≥10.0 25 ±0.42 ≥15.0 45 12 0.03 79 150 – 190 370
0.18
M24 3 1.5 25 ±0.42 ≥9.0 25 ±0.42 ≥15.0 44 12 0.03 95 150 – 190 370
0.21
M30 3.5 1.5 30 ±0.42 ≥9.0 30 ±0.42 ≥15.0 54 17 0.03 161 530 – 650 980
0.21
M36 4 1.5 35 ±0.5 ≥8.0 35 ±0.5 ≥15.0 63 17 0.03 368 530 – 650 980
0.21

Material : M8 – M20 : Class10 (JIS SCM435) Chromium Molybdenum steel /Surface hardness : HRC45 – 53
M24 – M36 : Class8 (JIS S45C) Medium Carbon steel / Surface hardness : HRC30 – 43
*JIS S45C (Property Class 8 = Min. tensile strength 800MPa (N/mm2)
*JIS SCM435 (Property Class 10 = Min. tensile strength 1040MPa (N/mm2)
Surface Finish: Black Oxide

– Extenal dimensions… Hexagon socket set screws JIS B1177 (2007) / ISO 4026
– Threads screw tolerances… JIS B0209 (2001) / ISO 965 6g
– The reference tightening torque is calculated at approx. 60 % of proof load of the hexagon wrench. (JIS B4648)
– Please be advised that the dimensions or specifications may be subject to change without notice.

HARDLOCK Set Screw Standard – Hollow Type Dimension Table

Dimensions in millimeters (mm)

Nominal size Pitch Set screw (1) Lock screw (2) Overall height Hexagonal socket *Common to (1) (2) Hole dia. Unit weight Reference tightening torque(N.m) *Common to the set & the lock screw Proof torque (N.m)
S, S1 H t1 H1 t2 (approx.) B A, A1 (g)
Coarse Fine Basic Tolerance Basic Tolerance l Basic Tolerance Basic Tolerance approx.
M12 1.75 1.5 16 ±0.35 ≥2.0 16 ±0.35 ≥5.0 29 6 0.02 6 ±0.2 13 27 – 33 52
0.14
M14 2 1.5 16 ±0.35 ≥2.0 16 ±0.35 ≥6.0 28 6 0.02 6 ±0.2 18 27 – 33 52
0.14
M16 2 1.5 20 ±0.42 ≥4.0 20 ±0.42 ≥8.0 36 8 0.03 8 ±0.2 29 63 – 77 120
0.18
M20 2.5 1.5 20 ±0.42 ≥5.0 20 ±0.42 ≥10.0 35 10 0.03 10 ±0.2 44 90 – 110 220
0.18
M24 3 1.5 25 ±0.42 ≥6.0 25 ±0.42 ≥12.0 44 12 0.03 12 ±0.2 81 150 – 190 370
0.21
M30 3.5 1.5 30 ±0.42 ≥9.0 30 ±0.42 ≥15.0 54 17 0.03 17 ±0.2 134 530 – 650 980
0.21
M36 4 1.5 35 ±0.5 ≥8.0 35 ±0.5 ≥15.0 63 17 0.03 17 ±0.2 293 530 – 650 980
0.21

 Material : Class8 (JIS S45C) Medium Carbon steel / Surface hardness : HRC30 – 43
*JIS SCM435 (Property Class 10 = Min. tensile strength 1040MPa(N/mm2)
Surface Finish : Black Oxide

– Extenal dimensions… Hexagon socket set screws JIS B1177 (2007) / ISO 4026
– Threads screw tolerances… JIS B0209 (2001) / ISO 965 6g
– The reference tightening torque is calculated at approx. 60% of proof load of the hexagon wrench. (JIS B4648)
– Please be advised that the dimensions or specifications may be subject to change without notice.

HARDLOCK Set Screw Standard – Pin – Normal Type Dimension Table

Dimensions in millimeters (mm)

Nominal size

 Pitch L Set screw (1) Lock screw (2) Thread length Hexagonal socket *Common to (1)(2) Pin dia. Unit weight Reference tightening torque(N.m) Proof torque (N.m)
S, S1 H t1 H1 t2 (approx.) B D (g) *Common to the set & the lock screw
Coarse Fine Basic Tolerance Basic Tolerance l Basic Tolerance Basic Tolerance approx.
M12 1.75 1.5 100 15 ±0.35 ≥4.0 16 ±0.35 12 28 6 0.02 8 0 53 27 – 33 52
200 0.14 -0.2 92
M16 2 1.5 100 20 ±0.42 ≥6.0 20 ±0.42 12 36 8 0.03 12 0 123 63 – 77 120
200 0.18 -0.2 212
– 250 257
M20 2.5 1.5 100 25 ±0.42 ≥6.0 20 ±0.42 12 40 10 0.03 16 0 217 90 – 110 220
200 0.18 -0.2 374
– 250 453
300 531
M24 3 1.5 100 35 ±0.42 ≥7.0 25 ±0.42 15 54 12 0.03 20 0 369 150 – 190 370
200 0.21 -0.2 613
– 250 735
300 857
M30 3.5 1.5 100 40 ±0.42 ≥7.0 30 ±0.42 20 64 17 0.03 24 0 570 530 – 650 980
200 0.21 -0.2 922
250 1,098
M36 4 1.5 100 40 ±0.5 ≥7.0 35 ±0.5 20 68 17 0.03 30 0 948 530 – 650 980
 200 0.21 -0.2  1,501

Material : Class8 (JIS S45C) Medium Carbon steel / Surface hardness : HRC30 – 43
*JIS SCM435 (Property Class 10 = Min. tensile strength 1040MPa(N/mm2)
Surface Finish : Black Oxide

– Extenal dimensions… Hexagon socket set screws JIS B1177 (2007) / ISO 4026
– Threads screw tolerances… JIS B0209 (2001) / ISO 965 6g
– The reference tightening torque is calculated at approx. 60% of proof load of the hexagon wrench. (JIS B4648)
– Please be advised that the dimensions or specifications may be subject to change without notice.

HARDLOCK Set Screw Pin – Hollow Type Dimension Table

Dimensions in millimeters (mm)

Nominal size Pitch L Set screw (1) Lock screw (2) Thread length Hexagonal socket Pin dia. Pin hole dia. Unit weight Reference tightening torque(N.m) *Common to the set & the lock screw Proof torque (N.m)
*Common to (1) (2)
S, S1 H t1 H1 t2 (approx.) B D A, A1 (g)
Coarse Fine Basic Tolerance Basic Tolerance l Basic Tolerance Basic Tolerance Basic Tolerance approx.
M14 2 1.5 100 20 ± ≥5.0 16 ± 9 32 6 +0.02 10 0 6 ± 59 27 – 33 52
0.42 0.35 0.14 -0.2 0.2
M16 2 1.5 100 20 ± ≥6.0 20 ± 12 36 8 +0.03 12 0 7 ± 87 63 – 77 120
– 200 0.42 0.42 0.18 -0.2 0.2 146
M20 2.5 1.5 100 25 ± ≥6.0 20 ± 12 40 10 +0.03 16 0 10 ± 145 90 – 110 220
– 200 0.42 0.42 0.18 -0.2 0.2 239
M24 3 1.5 100 35 ± ≥7.0 25 ± 15 54 12 +0.03 20 0 12 ± 224 150 – 190 370
– 200 0.42 0.42 0.21 -0.2 0.2 345
M30 3.5 – 100 40 ± ≥7.0 30 ± 20 64 17 +0.03 24 0 17 ± 348 530 – 650 980
200 0.42 0.42 0.21 -0.2 0.2 507
M36 4 – 100 40 ± ≥7.0 35 ± 20 68 17 +0.03 30 0 17 ± 703 530 – 650 980
200 0.5 0.5 0.21 -0.2 0.2 1,060

Material : Class8 (JIS S45C) Medium Carbon steel / Surface hardness : HRC30 – 43
*JIS SCM435 (Property Class 10 = Min. tensile strength 1040MPa(N/mm2)
Surface Finish : Black Oxide

– Extenal dimensions… Hexagon socket set screws JIS B1177 (2007) / ISO 4026
– Threads screw tolerances…JIS B0209(2001) / ISO 965 6g
– The reference tightening torque is calculated at approx. 60% of proof load of the hexagon wrench. (JIS B4648)
– Please be advised that the dimensions or specifications may be subject to change without notice.

HARDLOCK Set Screw Special / Thin – Hollow Type Dimension Table

Dimensions in millimeters (mm)

Nominal size Pitch Set screw (1) Lock screw (2) Overall height Hexagonal socket Unit weight reference tightening torque(N.m) Proof torque (N.m)
*Common to (1)(2) *Common to the set & the lock screw
S, S1 H H1 (approx.) B (g)
Fine Basic Tolerance Basic Tolerance l Basic Tolerance approx.
M14 1.5 10 ±0.29 10 ±0.29 17 6 0.02 12 27 – 33 52
0.14
M16 1.5 10 ±0.29 10 ±0.29 17 8 0.03 15 63 – 77 120
0.18
M18 1.5 10 ±0.29 10 ±0.29 17 8 0.03 16 63 – 77 120
0.18
M20 1.5 12 ±0.35 12 ±0.35 20 10 0.03 28 90 – 110 220
0.18
M24 1.5 12 ±0.35 12 ±0.35 20 12 0.03 35 150 – 190 370
0.21
M30 1.5 12 ±0.35 12 ±0.35 20 17 0.03 57 530 – 650 980
0.21
M36 1.5 18 ±0.35 18 ±0.35 31 17 0.03 162 530 – 650 980
0.21

Material : Class8 (JIS S45C) Medium Carbon steel / Surface hardness : HRC30 – 43
*JIS SCM435 (Property Class 10 = Min. tensile strength 1040MPa (N/mm2)
Surface Finish : Black Oxide

– Extenal dimensions… Hexagon socket set screws JIS B1177 (2007) / ISO 4026
– Threads screw tolerances… JIS B0209 (2001) / ISO 965 6g
– The reference tightening torque is calculated at approx. 60% of proof load of the hexagon wrench. (JIS B4648)
– Please be advised that the dimensions or specifications may be subject to change without notice.