Value Collection MP39306 1/4-28 X 1-1/2 in Grade 8 Hex Cap Screw 50pk

Product Description

The VALUE COLLECTION MP39306 is a 1/4-28 UNF hex head cap screw engineered for high-strength fastening applications. Made from Grade 8 steel with a zinc yellow dichromate finish, this screw delivers superior tensile strength and corrosion resistance compared to lower-grade fasteners. The 1-1/2 inch length under head and partial threading provide reliable clamping force in bolted joints where a grip length is required. Conforming to ASME B18.2.1, these screws meet industry standards for dimensional accuracy and mechanical performance. Each package contains 50 pieces, making them suitable for production work, maintenance operations, and repair applications where consistent quality is critical.

This cap screw is used across a wide range of industrial, mechanical, and trade applications including HVAC equipment assembly, electrical enclosure mounting, plumbing fixture installation, and general equipment maintenance. The fine 1/4-28 UNF thread pitch suits applications requiring precise torque control or higher thread engagement in metal. Partially threaded shanks are common where a smooth grip section is needed between mating components. These screws are sold in a 50-piece package with a minimum order quantity of 1 package.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• Zinc yellow dichromate finish offers corrosion resistance and is visually identifiable as a Grade 8 fastener
• 1/4-28 UNF fine thread for precise torque control and strong thread engagement in metal
• Partial threading allows a smooth shank grip section between joint surfaces
• Conforms to ASME B18.2.1 for dimensional consistency and interchangeability
• Packaged in quantities of 50 pieces per pack for efficient use in production or service work

Compatibility

Designed as a standard inch-series hex head cap screw per ASME B18.2.1, compatible with any 1/4-28 UNF tapped hole or nut in applications requiring Grade 8 strength and zinc yellow dichromate finish.

Installation Notes

Install using a properly sized hex socket or combination wrench to avoid rounding the head. Always ensure mating threads are clean and free of debris before installation. Apply torque according to the equipment manufacturer specifications for Grade 8 fasteners at 1/4-28 thread size. De-energize and de-pressurize any system before replacing or installing fasteners on live equipment.