Hex head screws / bolts partially / fully threaded, with UNF thread
BN 69
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标准
~DIN 933/931
特点
| Headform |
Headform
Hexagon
|
| Drive |
Drive
Hexagon
|
| Thread |
Thread
partially / fully threaded
|
| Material |
Material
Steel
|
| Property class |
Property class
8.8 (Or Grade 5.2 - at manufacturer's option)
|
| Surface |
Surface
zinc plated blue
|