Value Collection -33621-1 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION -33621-1 is a hex socket cap screw designed for applications requiring a secure, high-strength threaded fastener in a compact head profile. Built from alloy steel with a black oxide finish, this screw meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical consistency. It features a 5/16-18 UNC thread size, a 1-1/2 inch length under head, and is fully threaded along its entire shank. The 1/4 inch hex drive accepts a standard hex key or Allen driver. Installed by mechanical contractors, industrial maintenance technicians, and assembly professionals wherever a flush or low-profile fastener head is required.

This fastener is suited for general mechanical assembly, machinery maintenance, and structural fastening tasks in both light and heavy industrial settings. The black oxide coating provides mild corrosion resistance and reduces light reflection, making it appropriate for interior mechanical assemblies and equipment panels. The fully threaded shank ensures maximum thread engagement across the entire clamped length, which is useful in thin-material or short-grip applications. A minimum order quantity of 50 pieces applies to this SKU.

Key Features

• 5/16-18 UNC thread for broad compatibility with standard tapped holes
• Fully threaded shank maximizes thread engagement over the entire 1-1/2 inch length under head
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and low-glare surface
• 1/4 inch hex drive accepts standard hex keys and hex bit drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 5/16-18 UNC hex socket cap screw with a 1-1/2 inch length under head and a 1/4 inch hex drive, per ASME/ANSI B18.3 specifications.

Installation Notes

Installation is performed with a 1/4 inch hex key or socket hex bit driver. Ensure the mating tapped hole is clean and free of debris before driving. Do not exceed the rated torque range for 5/16-18 alloy steel cap screws as defined by applicable fastener standards. Always de-energize and lock out equipment before replacing fasteners on live machinery.