A0-20JN Hex-Socket Flat (Nissan JIS)
Model: A0-20JN
Dia range:M3～M20
Length range:5～100
Iron (or standard), Stainless steel (303, 304,…).
Plain, Zinc blue cr6+, Zinc yellow cr6+, Trivalent zinc cr+3 color white,…
Countersunk Head Hex Socket Bolt
Unit: mm
| Thread Nominal Diameter (d) | M3 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 1) | M20 1) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Pitch (P) | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | ||
| b | Reference | 18 | 20 | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 52 | |
| ⌀da | Max | 3.3 | 4.4 | 5.5 | 6.6 | 8.54 | 10.62 | 13.5 | 15.5 | 17.5 | 22 | |
| ⌀dk | Theoretical Dimension | Max | 6.72 | 8.96 | 11.2 | 13.44 | 17.92 | 22.4 | 26.88 | 30.8 | 33.6 | 40.32 |
| Actual Dimension | Min | 5.54 | 7.53 | 9.43 | 11.34 | 15.24 | 19.22 | 23.12 | 26.52 | 29.01 | 36.05 | |
| ⌀ds | Max | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |
| Min | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||
| e | Min | 2.303 | 2.873 | 3.443 | 4.583 | 5.723 | 6.863 | 9.149 | 11.429 | 11.429 | 13.716 | |
| k | Max | 1.86 | 2.48 | 3.1 | 3.72 | 4.96 | 6.2 | 7.44 | 8.4 | 8.8 | 10.16 | |
| F | Max | 0.25 | 0.25 | 0.3 | 0.35 | 0.4 | 0.4 | 0.45 | 0.5 | 0.6 | 0.75 | |
| r | Min | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |
| s | Nominal | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 10 | 12 | |
| Tolerance | 0.08 0.02 | 0.08 0.02 | 0.08 0.02 | 0.095 0.02 | 0.14 0.02 | 0.14 0.02 | 0.175 0.025 | 0.175 0.025 | 0.175 0.025 | 0.212 0.032 | ||
| t | Min | 1.1 | 1.5 | 1.9 | 2.2 | 3 | 3.6 | 4.3 | 4.5 | 4.8 | 5.6 | |
| w | Min | 0.25 | 0.45 | 0.66 | 0.7 | 1.16 | 1.62 | 1.8 | 1.62 | 2.2 | 2.2 | |
| Partial Thread Length | Or more | 30 | 30 | 35 | 40 | 50 | 55 | 65 | 70 | – | – | |
Only M16 and M20 are fully threaded in all standard production sizes.
