Value Collection R50000378 High Hex Nut 1-1/4-12 Unf

Product Description

The VALUE COLLECTION R50000378 is a high hex nut machined from steel and threaded to a 1-1/4-12 UNF specification with a right-hand thread direction. High hex nuts carry a greater thread engagement height than standard hex nuts, making them well suited for applications that require increased holding strength or resistance to vibration-induced loosening. This nut measures 1-13/16 inches across the flats and stands 2-7/8 inches high. It is supplied in an uncoated finish. Millwrights, pipefitters, maintenance technicians, and mechanical contractors reach for this style of fastener on heavy-duty bolted assemblies in industrial, commercial, and plant maintenance settings.

This high hex nut is used wherever a 1-1/4-12 UNF right-hand thread interface is called out on the assembly drawing or fastener spec sheet. The UNF thread form is a fine-pitch standard that provides precise clamping load control and performs well in applications subject to vibration or repeated disassembly cycles. Typical install scenarios include heavy equipment, pump housings, compressor flanges, and structural mechanical assemblies that demand a coarse-body, fine-thread fastener for controlled torquing.

Key Features

• 1-1/4-12 UNF fine-pitch right-hand thread for precise clamping control
• High hex profile at 2-7/8 inches tall provides greater thread engagement than standard hex nuts
• 1-13/16 inches across flats fits standard open-end and box wrenches
• Steel construction for mechanical strength in industrial applications
• Uncoated finish — suitable for painting, plating, or use as-is per application requirements

Compatibility

Designed for use with 1-1/4-12 UNF right-hand threaded bolts and studs in heavy-duty mechanical assemblies requiring a high hex nut profile.

Installation Notes

Installation is performed by millwrights, maintenance technicians, or mechanical contractors using appropriately sized open-end, box, or socket wrenches. Always clean and inspect mating threads before assembly to prevent galling or cross-threading. Apply thread lubricant or anti-seize compound as required by the equipment manufacturer or job specification. Follow torque values specified in the equipment service manual or applicable engineering standard — do not estimate torque on high-hex fasteners in structural or pressure-containing applications.