Value Collection R52001040 Hex Head Cap Screw 1/4-20 Unc

Product Description

The VALUE COLLECTION R52001040 is a partially threaded hex head cap screw designed for general fastening applications across mechanical, structural, and light industrial assemblies. Sized at 1/4-20 UNC with a 7-inch length under head, this screw is manufactured from Grade 2 steel with a zinc-plated finish that provides basic corrosion resistance in dry to mildly humid environments. The 7/16-inch hex drive head accepts standard hex wrenches and sockets. It meets ASME B18.2.1 and SAE J429 dimensional and mechanical standards, making it a reliable choice for code-referenced fastening work. Machinists, millwrights, electricians, and general tradespeople commonly use this fastener in panel mounting, equipment assembly, and fixture installation.

This cap screw is suited for residential and commercial maintenance, repair, and assembly tasks where a coarse-thread 1/4-20 UNC partial-thread fastener is specified. The partial-thread design allows the unthreaded shank to bear shear loads and align mating components before the threaded section engages. Typical applications include equipment enclosure assembly, conduit support bracketing, mechanical component mounting, and general trade service work requiring a long-reach fastener in this thread class.

Key Features

• 1/4-20 UNC coarse thread for broad nut and tapped-hole compatibility
• 7-inch length under head accommodates deep-stack assemblies and long-reach fastening
• Partially threaded shank handles shear loads and aids component alignment
• Grade 2 steel construction meets SAE J429 mechanical requirements
• Zinc-plated finish provides basic corrosion resistance in dry or low-humidity environments
• Conforms to ASME B18.2.1 dimensional standards for consistent fitment

Compatibility

Designed as a standard 1/4-20 UNC hex head cap screw for use with any 1/4-20 UNC nut, insert, or tapped hole conforming to ASME B18.2.1 specifications.

Installation Notes

Install using a 7/16-inch hex wrench or socket driver. Ensure mating threads are clean and free of debris before engagement to avoid cross-threading. Apply thread-locking compound or hardware-appropriate lubricant per the assembly specification. Torque to the value specified by the equipment manufacturer or applicable trade standard — do not substitute torque values from other fastener grades or sizes.