Value Collection 581196BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 581196BR is a hex socket cap screw designed for high-strength bolted assemblies requiring a recessed drive fastener. It carries a 1-1/4-7 UNC thread and an 18-inch length under the head, making it suited for deep-reach or heavy-section clamping applications. The screw is partially threaded, which maintains shank strength across the unthreaded portion of the grip length. Drive engagement is through a 7/8-inch hex socket. Construction is alloy steel with a black oxide finish, meeting ASME/ANSI B18.3 and ASTM A574 standards. Licensed tradespeople and maintenance machinists working on structural, industrial, or heavy equipment fastening applications typically install this fastener.

This screw fits heavy industrial, manufacturing, and mechanical assembly environments where large-diameter socket cap screws are specified. The 1-1/4-7 UNC coarse thread is common in steel-to-steel joints, machine bases, fixtures, and structural frames. The partial threading pattern is preferred when the joint requires a precise grip length or when the shank must pass through a clearance hole before engaging the tapped bore. The black oxide coating provides mild corrosion resistance and reduces galling during installation in metal-to-metal contact conditions.

Key Features

• 1-1/4-7 UNC coarse thread for high-load, steel-to-steel applications
• 18-inch length under head for deep-reach or thick-section clamping
• Partially threaded shank maintains grip-length shank strength
• 7/8-inch hex socket drive for standard hex key or socket tooling
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides mild corrosion resistance and reduces surface galling

Compatibility

Designed as an OEM-style or replacement fastener for industrial machinery, structural frames, and heavy equipment assemblies that specify 1-1/4-7 UNC hex socket cap screws conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a calibrated torque wrench and the correct 7/8-inch hex key or drive socket. De-energize and lock out all energy sources on the equipment before fastener removal or replacement. Verify thread engagement depth and hole condition before driving; do not force the screw into a misaligned or damaged tapped bore. Follow applicable industry torque tables for ASTM A574 alloy steel socket cap screws when determining final torque values.