Value Collection 015537BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 015537BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling fixtures, and structural connections. This screw features a 1-8 UNC thread size, a 3.5-inch length under head, and a 0.75-inch hex drive. It is manufactured from alloy steel with a black oxide coating, which provides moderate corrosion resistance and reduces light reflection in service environments. The partially threaded shank allows for controlled clamping force and precise load distribution. Machinists, millwrights, and maintenance technicians commonly install this fastener in high-load or tight-clearance applications where a hex key drive is required.

This cap screw is suited for use in industrial machinery, fabricated steel structures, jigs, dies, and equipment frames where a recessed drive fastener is preferred over a hex head. The 1-8 UNC coarse thread pitch provides good resistance to loosening under vibration. The partially threaded design is appropriate for through-bolt and blind-hole installations requiring a smooth shank section for alignment or load transfer. A standard hex key or T-handle hex driver in the 0.75-inch drive size is used for installation and removal.

Key Features

• 1-8 UNC coarse thread for reliable engagement in standard tapped holes
• 3.5-inch length under head with partial threading for shank-to-hole alignment
• 0.75-inch hex socket drive for use with standard hex keys or T-handle drivers
• Alloy steel construction rated to ASTM A574 for high tensile strength
• Black oxide finish provides mild corrosion resistance and low-glare surface
• Meets ASME/ANSI B18.3 and IFI 124 fastener standards

Compatibility

Designed as an OEM-style replacement or standard fastener for applications requiring a 1-8 UNC partially threaded hex socket cap screw in alloy steel.

Installation Notes

Installation is performed using a 0.75-inch hex key or socket driver. Verify that the mating tapped hole meets the 1-8 UNC thread specification and is free of debris before installation. Apply thread lubricant or thread-locking compound as required by the assembly specification. Follow torque values specified in the engineering documentation for the host assembly, as no torque value is provided with this fastener alone.