Pin Normal Type: Dimension and tightening torque table

Pin normal type

Standard materials and coatings

Size Material Coating
M12–M36 Class 8/medium-carbon steel (JIS S45C)/hardness HRC 30–43 Black oxide

Please contact us for other coating options.

Dimension and tightening torque table (M12–M36)

Unit: millimeters (mm)

Nominal size Pitch L Set screw (1) Lock screw (2) Thread length (approx.) Hex socket (common to 1, 2) Pin dia. Unit weight Reference tightening torque (N·m) (same for set and lock screws)
(same material, strength)
Guaranteed torque
H Tolerance 1 H1 Tolerance 2
S, S1 C: Coarse F: Fine B Tolerance D Tolerance (g)
M12 1.75 1.5 100 15 ±0.35 ≧4 16 ±0.35 12 28 6 +0.02
+0.14
8 0
‐0.2
53 27–33 52
200 92
M16 2.0 1.5 100 20 ±0.42 ≧6 20 ±0.42 12 36 8 +0.03
+0.18
12 0
‐0.2
123 63–77 120
200 212
/ 250 257
M20 2.5 1.5 100 25 ±0.42 ≧6 20 ±0.42 12 40 10 +0.03
+0.18
16 0
‐0.2
217 90–110 220
200 374
/ 250 453
300 531
M24 3.0 1.5 100 35 ±0.42 ≧7 25 ±0.42 15 54 12 +0.03
+0.21
20 0
‐0.2
369 150–190 370
200 613
/ 250 735
300 857
M30 3.5 1.5 100 40 ±0.42 ≧7 30 ±0.42 20 64 17 +0.03
+0.21
24 0
‐0.2
570 530–650 980
200 922
/ 250 1,098
M36 4.0 1.5 100 40 ±0.5 ≧7 35 ±0.5 20 68 17 +0.03
+0.21
30 0
‐0.2
948 530–650 980
200 1,501

• External dimensions: Hexagon socket set screws JIS B1177(2007)/ISO 4026
• Screw thread tolerances: JIS B0209 (2001)/ISO 965 6g6g
• The reference tightening torque is calculated at approximately 60% of the guaranteed load of the hex wrench. (JIS B4648)
• Please be advised that the dimensions and other specifications are subject to change without notice.