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[China]
Address: No.288,Yewang Road,Yexie Town,Songjiang District,Shanghai.
Contact name:fuchengjun
Shanghai Summery Industrial Machine Co. , Ltd. |
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Professional DIN 912 Socket Hex Head Machine Screw ISO 4762 M8X30 For Bicycle
This International Standard specifies the characteristics of
hexagon socket head cap screws with threads from Ml,6 up to and
including M64 and product grade A.
The following Standards contain provisions which, through reference
in this text, constitute provisions of this
International Standard. At the time of publication, the editions
indicated were valid. All Standards are subject to revision, and
Parties to agreements based on this International Standard are
encouraged to investigate the possibility of applying the most
recent editions of the Standards indicated below Members of IEC and
ISO maintain registers of currently valid International Standards.
| Mechanical and physical peroperties of bolts,screws and studs | |||||
| Mechanical and physical peroperties | Property class | ||||
| 8.8 | 10.9 | 12.9 | |||
| d≦16 mm | d﹥16 mm | ||||
| Minimum tensile strength (N/mm2) | min | 800 | 830 | 1040 | 1220 |
| Vickers hardness (HV) | min | 250 | 255 | 320 | 385 |
| max | 320 | 335 | 380 | 435 | |
| Brinell hardness (HB) | min | 238 | 242 | 304 | 366 |
| max | 304 | 318 | 361 | 414 | |
| Rockwell hardness (HRC) | min | 22 | 23 | 32 | 39 |
| max | 32 | 34 | 39 | 44 | |
