Value Collection 015541BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 015541BR is a hex socket cap screw designed for high-strength bolted assemblies in industrial, mechanical, and structural applications. It features a 1-8 UNC thread size with a 4.5-inch length under the head and is driven by a 3/4-inch hex key. Constructed from alloy steel with a black oxide coating, this fastener delivers reliable tensile strength and moderate corrosion resistance in demanding environments. The partial threading allows for controlled clamping force and is suited for through-bolt and tapped-hole configurations. Licensed mechanics, millwrights, and maintenance technicians are the primary installers.

This socket cap screw is appropriate for heavy equipment assembly, machine tool fixturing, and general industrial maintenance where a recessed-drive, high-strength fastener is required. The 1-8 UNC coarse thread pitch is widely used in ferrous metal applications and provides strong pull-out resistance in tapped steel components. The black oxide finish reduces galling during installation and provides light surface protection in low-moisture environments. It ships as a single unit and is suited for both repair and new-build work.

Key Features

• 1-8 UNC coarse thread for strong engagement in tapped steel and iron
• 4.5-inch length under head accommodates thicker stack-ups and through-bolt applications
• Partially threaded shank provides a smooth bearing surface and accurate clamping
• Alloy steel construction meets ASTM A574 and IFI 124 standards for high tensile strength
• Black oxide coating reduces friction and provides light corrosion resistance
• 3/4-inch hex drive accepts standard hex keys and T-handle drivers

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for industrial machinery, structural assemblies, and mechanical equipment requiring a 1-8 UNC high-strength fastener.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or industrial technicians using a 3/4-inch hex key or socket driver. Ensure the mating tapped hole is clean, properly sized, and free of debris before installation. Apply thread lubricant or anti-seize compound as appropriate for the service environment to achieve accurate clamp load. Follow applicable torque specifications from a recognized fastener standard or equipment OEM documentation.