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The VALUE COLLECTION 33664 is a 1/2-13 UNC hex socket cap screw designed for high-strength fastening in mechanical, industrial, and trade applications. Made from alloy steel with a black oxide finish, this screw delivers solid corrosion resistance and a clean, low-reflectance appearance. The 3/8-inch hex drive accepts standard hex keys and Allen wrenches. At 1-1/2 inches length under head with full threading along the entire shank, it provides maximum thread engagement for secure clamping in tapped holes. Licensed trades and maintenance professionals use this type of fastener across structural assemblies, equipment mounting, and machinery repair.
This cap screw is suited for residential and commercial mechanical installations where 1/2-13 UNC threading is specified. Fully threaded construction makes it effective in through-hole and blind tapped-hole applications alike. The black oxide alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding load-bearing connections in industrial and trade environments.
Designed as an OEM-style replacement or standard-service fastener for any application specifying a 1/2-13 UNC fully threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.
Installation is performed using a 3/8-inch hex key or Allen socket driver. De-energize and lock out any equipment before accessing fastener locations on live machinery. Verify that the receiving tapped hole meets 1/2-13 UNC thread specifications before driving the screw. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener seating and preload requirements.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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