Hex socket head cap screw CSHH/CSHHL

Caution
- The product images are representative only. Specifications may vary by part number, including shape and color.
- Even for the same part number, there may be slight differences in color, but this does not affect the specifications. We thank you for your understanding.
Product Description
[Mounting Hole Shape] Hex socket
[Basic Shape] Standard (round)
[Material] Steel
[Thread type] Metric coarse
[Additional Shape] Standard
[Application] High strength
[Nominal thread size (M)] 2, 2.5, 2.6, 3, 4, 5, 6, 8, 10, 12, 14, 16
[Pitch (mm)] 0.4, 0.45, 0.5, 0.7, 0.8, 1.0, 1.25, 1.5, 1.75, 2.0
[Surface Treatment] Black oxide coating, trivalent black, trivalent white, bright chromate plating, chromate plating, green chromate, black chromate, nickel plating, black nickel, chrome plating, Dacrotized, tin cobalt, bright chromate plating + thread lock coating (A-lock), trivalent black + thread lock coating (A-lock), electroless nickel plating
[Thread Type] Full thread, partial thread
Drawing

Product Specification
Japanese Industrial Standards certification acquired JQ0508187
Type: metric coarse thread
Material: alloy wire mesh for machine structures
Part class: A
Strength class: HRC39–44 (12.9)
Surface treatment: iron oxide coating
Thread accuracy: JIS5g6g
Plated product strength class: 10.9 (HRC32–39)
Thread accuracy: JIS6g or class 2
Hexavalent (bright chromate, chromate, black chromate)
Trivalent chromate (white, black)

Specifications Table
unit: mm
| Nominal thread size (d) | Thread Pitch (p) | b | dk | DA | ds | k | r | S | t | v | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reference | Maximum (reference dimension)*1 | Max.*2 | Minimum | Maximum | Maximum (reference dimension) | Minimum | Maximum (reference dimension) | Minimum | Minimum | Nominal | Maximum | Minimum | Minimum | Maximum | ||
| M2 | 0.4 | 16 | 3.8 | 3.99 | 3.62 | 2.6 | 2 | 1.86 | 2 | 1.86 | 0.1 | 1.5 | 1.58 | 1.52 | 1 | 0.2 |
| M2.5 | 0.45 | 17 | 4.5 | 4.68 | 4.32 | 3.1 | 2.5 | 2.36 | 2.5 | 2.36 | 0.1 | 2 | 2.08 | 2.02 | 1.1 | 0.25 |
| M2.6 | 0.45 | 17 | 4.5 | 4.68 | 4.32 | 3.2 | 2.8 | 2.46 | 2.6 | 2.46 | 0.1 | 2 | 2.08 | 2.02 | 1.1 | 0.25 |
| M3 | 0.5 | 18 | 5.5 | 5.68 | 5.32 | 3.6 | 3 | 2.86 | 3 | 2.86 | 0.1 | 2.5 | 2.58 | 2.52 | 1.3 | 0.3 |
| M4 | 0.7 | 20 | 7 | 7.22 | 6.78 | 4.7 | 4 | 3.82 | 4 | 3.82 | 0.2 | 3 | 3.08 | 3.02 | 2 | 0.4 |
| M5 | 0.8 | 22 | 8.5 | 8.72 | 8.28 | 5.7 | 5 | 4.82 | 5 | 4.82 | 0.2 | 4 | 4.095 | 4.02 | 2.5 | 0.5 |
| M6 | 1 | 24 | 10 | 10.22 | 9.78 | 6.8 | 6 | 5.82 | 6 | 5.7 | 0.25 | 5 | 5.14 | 5.02 | 3 | 0.6 |
| M8 | 1.25 | 28 | 13 | 13.27 | 12.73 | 9.2 | 8 | 7.78 | 8 | 7.64 | 0.4 | 6 | 6.14 | 6.02 | 4 | 0.8 |
| M10 | 1.5 | 32 | 16 | 16.27 | 15.73 | 11.2 | 10 | 9.78 | 10 | 9.64 | 0.4 | 8 | 8.175 | 8.025 | 5 | 1 |
| M12 | 1.75 | 36 | 18 | 19.27 | 17.73 | 13.7 | 12 | 11.73 | 12 | 11.57 | 0.6 | 10 | 10.175 | 10.025 | 6 | 1.2 |
| M14 | 2 | 40 | 21 | 21.33 | 20.67 | 15.7 | 14 | 13.73 | 14 | 13.57 | 0.6 | 12 | 12.212 | 12.032 | 7 | 1.4 |
| M16 | 2 | 44 | 24 | 24.33 | 23.67 | 17.7 | 16 | 15.73 | 16 | 15.57 | 0.6 | 14 | 14.212 | 14.032 | 8 | 1.8 |
| M20 | 2.5 | 52 | 30 | 30.33 | 29.67 | 22.4 | 20 | 19.67 | 20 | 19.48 | 0.8 | 17 | 17.23 | 17.05 | 10 | 2 |
*1 Applicable to heads without knurling.
*2 Apply to heads with knurling.