Technology | |||
Screws | |||
Stamping Parts | |||
Machined Parts | |||
Pins | |||
Bolts | |||
Nuts | |||
Washers | |||
Rivets | |||
Hex Wrench | |||
Metric Threads Specification | |||
Screw Basic Knowledge | |||
Plastic & Nylon Parts | |||
|
Washer | Hardness/HV | 100 | 200 | 300 | |
Product Grade | C | A | A | ||
Bolt , Nut & Screw | Prodct Grade | A | NG | OK | OK |
B | NG | OK | OK | ||
C | OK | NG | NG | ||
Bolt & Screw | Property Grade | 6.8 | OK | OK | OK |
8.8 | NG | OK | OK | ||
9.8 & 10.9 | NG | NG | OK | ||
12.9 | NG | NG | NG | ||
Nut | Property Grade | 6 | OK | OK | OK |
8 | NG | OK | OK | ||
9 & 10 | NG | NG | OK | ||
12 | NG | NG | NG | ||
SS Bolt , Nut & Screw | __ | OK |
__ |
Mark : " NG" stands for Not Go , washer , nut , bolt and screw can not be combined to work under given grades .
" OK" stands for washer , nut and screw can combine to work under given grades .