JESENTECH GROUP CORPORATION
*JESENTECH GROUP CORPORATION *Fasten The World, Serve The World! *Professional manufacturer of Special-shaped Shaft fasteners!
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| Type | Material | Surface finish | |
| With wrench slot | Without wrench slot | ||
| SEVS | SECS | SUS303 | / |
| SEVQN | SECQN | 1215 Environmental protection iron | Electroless nickel plating |
| SEVH | SECH | H59 | / |
| Type | BS≤L-e1 | when L-BS≤N×3,must have W-N≥2 | L≥N×3+2 | ||||
| With wrench slot | Without wrench slot | D | L designated unit 1mm |
BS designated unit 1mm |
coarse thread M choice N choice |
W | e1 |
| SEVS SEVQN SEVH |
SECS SECQN SECH |
6 | 15~50 | 0~42 | 3,4 | 5 | 8 |
| 8 | 20~150 | 0~142 | 3,4,5 | 7 | |||
| 10 | 20~350 | 0~342 | 4,5,6 | 8 | |||
| 12 | 25~400 | 0~390 | 5,6,8 | 10 | 10 | ||
| 15 | 30~400 | 0~390 | 6,8,10 | 13 | |||
| 20 | 35~400 | 0~390 | 6,8,10,12 | 17 | |||