Value Collection BH025C138N Hex Head Cap Screw 1/4-20

Product Description

The VALUE COLLECTION BH025C138N is a 1/4-20 UNC hex head cap screw with a 1-3/8 inch length under head, manufactured from Grade 8 steel with a zinc-plated finish. Grade 8 steel delivers high tensile strength for demanding fastening applications where standard hardware-grade fasteners are not sufficient. The zinc coating provides corrosion resistance for use in mildly corrosive environments. This fastener meets ASTM A354 BD and MIL-HDBK-57 standards, making it appropriate for structural, mechanical, and equipment assembly work across industrial and trade applications.

This cap screw is used in mechanical assemblies, equipment mounting, structural connections, and general fabrication where a high-strength inch-series fastener is required. The 1/4-20 UNC thread is one of the most common coarse-thread sizes in North American trade work and fits a wide range of tapped holes and standard nuts. Typical installers include millwrights, HVAC technicians, pipefitters, electricians, and general maintenance trades who need a reliable, code-recognized fastener for equipment and structural hardware applications.

Key Features

• Grade 8 steel construction for high tensile and shear strength
• Zinc-plated finish for corrosion resistance in moderate environments
• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes and nuts
• 1-3/8 inch length under head to accommodate standard assembly stack-ups
• Meets ASTM A354 BD and MIL-HDBK-57 standards
• Driven with a 7/16 inch hex key or wrench

Compatibility

Designed for use with standard 1/4-20 UNC tapped holes, hex nuts, and flanged nuts in inch-series fastener applications.

Installation Notes

Install and torque using a 7/16 inch open-end, box-end, or socket wrench. Ensure mating threads are clean and free of debris before installation. Do not mix with metric fasteners or use in applications requiring a different grade or finish specification. Always verify that the fastener grade and coating meet the requirements of the applicable assembly standard or equipment manufacturer specification before installation.