Hex Washer - Unslotted - Type 1 - Thread Cutting Screws - Black Oxide
Manufactured to ASME B18.6.3 & SAE J933 specifications
Case Hardened to Rockwell C45 min
(Core Hardness: Rockwell C28-38)
Fully Threaded / Steel Black Oxide Finish
Technical Specifications / 2D 
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