半沉头螺钉 带狭槽
BN 541
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标准
~DIN 964 A (Standard withdrawn)
~ISO 2010
~UNI 6110
~ČSN 021155
特点
| Headform |
Headform
Oval countersunk
|
| Drive |
Drive
Slot
|
| Thread |
Thread
fully threaded
|
| Material |
Material
Brass
|
| Surface |
Surface
nickel plated
|