Value Collection BT-1420-750-AS Set Screw 1/4-20 X 3/4 in

Product Description

The Value Collection BT-1420-750-AS is a Grade 8 alloy steel set screw with a soft brass tip, designed for secure, torque-resistant fastening in mechanical assemblies where shaft or component surfaces must be protected from marring. The 1/4-20 thread size follows UNC and UNF standards, and the 3/4-inch threaded length provides solid engagement depth in a wide range of applications. The hex socket drive allows precise tightening with a standard hex key. The brass tip compresses against the mating surface, holding position without damaging polished or finished shafts. Machinists, maintenance technicians, and industrial tradespeople install this type of fastener in motors, pulleys, collars, and similar rotating or clamped assemblies.

This set screw is suited for use in HVAC blower assemblies, pump shaft collars, motor pulleys, fan hubs, and general industrial equipment where a positive hold is needed without surface damage. The soft brass tip deforms slightly under load to grip without scoring, making it a practical choice in applications involving aluminum, steel, or finished stainless shafts. This screw is sold individually per package with a minimum order quantity of 10 units, appropriate for shop stock or field service kits.

Key Features

• Grade 8 alloy steel construction provides high tensile and proof load strength
• Soft brass tip protects shaft surfaces from scoring and marring during installation
• Hex socket drive accepts standard hex keys for controlled, precise tightening
• 1/4-20 thread compatible with both UNC and UNF standard tapped holes
• 3/4-inch thread length offers solid engagement for secure holding power in collars and hubs

Compatibility

Designed as an OEM-style replacement or shop-stock set screw for mechanical assemblies requiring a 1/4-20 threaded soft-tip fastener, including motor shaft collars, blower wheel hubs, pulleys, and similar clamping hardware.

Installation Notes

Install using a properly sized hex key to avoid rounding the drive socket. Always de-energize and lock out equipment before accessing shaft assemblies or rotating components. Do not overtighten — the brass tip is intended to deform slightly and grip; excessive torque can shear the tip or damage the screw. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener seating depth and preload.