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| Thread specification D | M3 | M4 | M5 | M6 | M8 | M10 | M10 | M12 | M12 | |
| P | Coarse teeth | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1 | 1.75 | 1.5 |
| d | Nominal | 5 | 6 | 7 | 9 | 11 | 13 | 13 | 15 | 15 |
| Maximum value | 4.97 | 5.97 | 6.97 | 8.97 | 10.97 | 12.97 | 12.97 | 14.97 | 14.97 | |
| Minimum value | 4.9 | 5.9 | 6.9 | 8.9 | 10.9 | 12.9 | 12.9 | 14.9 | 14.9 | |
| d1 | Minimum value=Nominal (H12) | 4 | 4.8 | 5.6 | 7.5 | 9.2 | 11 | 11 | 13 | 13 |
| Maximum value | 4.12 | 4.92 | 5.72 | 7.65 | 9.35 | 11.18 | 11.18 | 13.18 | 13.18 | |
| dk | Maximum value | 8 | 9 | 10 | 12 | 14 | 16 | 16 | 18 | 18 |
| k | 0.8 | 0.8 | 1 | 1.5 | 1.5 | 1.8 | 1.8 | 1.8 | 1.8 | |
| r | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | |
| d0 | Minimum value=Nominal | 5 | 6 | 7 | 9 | 11 | 13 | 13 | 15 | 15 |
| Maximum value | 5.15 | 6.15 | 7.15 | 9.15 | 11.15 | 13.15 | 13.15 | 15.15 | 15.15 | |
| h1 | Reference value | 5.8 | 7.5 | 9.3 | 11 | 12.3 | 15 | 15 | 17.5 | 17.5 |
| Recommended riveting thickness h | - | - | - | - | - | - | - | - | - | |
| Thousand pieces of steel weight≈kg | - | - | - | - | - | - | - | - | - | |
① , b=(1.25~1.5) D ② , a ° to be determined by the manufacturer. ③ It is allowed to create patterns on the supporting surface and/or the circumferential surface, with the type and size determined by the manufacturer. ④ , L is the maximum value ⑤ This standard is not equivalent to the Italian national standard UNI 9201: 1988 "Cylindrical head internal thread tubular rivets". UNI 9201 does not provide permission to produce patterns, r, L1 dimensions, and Appendix A on the bearing surface and/or the circumferential surface. The thread specifications, d, dk, and d0 provided in this standard are consistent with UNI 9201. ⑥ The technical conditions shall comply with the provisions of GB/T 17880.6. | ||||||||||
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