5/16 x 4 Self-Drilling Screws / Unslotted / Hex Washer Head / Steel / Zinc / #3 Drill Point (Quantity: 500 pcs)

Hex Washer Unslotted #REF! Manufactured to ASME B18.6.3 & SAE J78 specifications Case Hardened to Rockwell C50-56 (Core Hardness: Rockwell C32-40) Steel Zinc Plated

Description

Hex Washer Unslotted #REF! Manufactured to ASME B18.6.3 & SAE J78 specifications Case Hardened to Rockwell C50-56 (Core Hardness: Rockwell C32-40) Steel Zinc Plated