Flat - Square Recess - Undercut - Type A - Self Tapping Screws - Zinc
Governing Standard: ASME B18.6.3
Governing Standard: SAE J933
Measurable: Case Hardened to Rockwell C45 min.
Measurable: Core Hardness: Rockwell C28-38
Thread Pattern: Spaced
Thread: Full
Technical Specifications / 2D 
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