unifled recess

2012-12-25 16:53 Source:未知 Writer: admin
Unified Raised Countersunk Head Machine Screws - PoziDriv® - Type 1A
ANSI/ASME  B18.6.3 2003
Materials/Finishes:  
Steel 4.8/Zinc & clear 
Stainless steel/Self colour 
Brass/Self colour

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