Value Collection MP30230 Hex Cap Screw 3/8-24 X 1-1/4 in Grade 5

Product Description

The VALUE COLLECTION MP30230 is a fully threaded hex head cap screw designed for reliable fastening in mechanical, structural, and industrial assemblies. Sized at 3/8-24 UNF (unified fine thread) with a 1-1/4 inch length under head, this fastener is manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance in moderate-exposure environments. It conforms to ASME B18.2.1 dimensional standards, making it a direct-fit replacement in applications where inch-series fine-thread fasteners are specified. Sold in a pack of 25, these screws are suitable for HVAC equipment assemblies, plumbing fixtures, electrical enclosures, and general mechanical maintenance work performed by trade professionals.

Fine-thread UNF fasteners like the MP30230 are commonly used where vibration resistance and precise clamping force are priorities. The 3/8-24 thread pitch provides greater thread engagement per inch compared to coarse-thread equivalents, making it well suited for use in tapped metal components, brackets, panels, and equipment housings found in residential and light commercial trade applications. The zinc-plated finish provides a base level of corrosion protection appropriate for indoor and sheltered outdoor installations.

Key Features

• 3/8-24 UNF fine thread for superior vibration resistance and thread engagement in metal substrates
• 1-1/4 inch length under head for consistent fit in standard tapped assemblies
• Grade 5 steel construction meets medium-strength fastener requirements
• Zinc-plated finish provides corrosion resistance for indoor and sheltered applications
• Fully threaded shank allows maximum thread engagement across the full fastener length
• Conforms to ASME B18.2.1 for dimensional consistency and interchangeability

Compatibility

Designed as a standard inch-series UNF hex head cap screw for use in any application requiring a 3/8-24 fully threaded fastener conforming to ASME B18.2.1 dimensional standards.

Installation Notes

Install using a standard 9/16 inch hex wrench or socket driver appropriate for 3/8 inch hex head cap screws. De-energize or shut down any equipment before replacing or tightening fasteners in live assemblies. Do not exceed the torque capacity of the Grade 5 rating; consult the equipment manufacturer or applicable fastener torque tables for the specific joint material and lubrication condition. Inspect threads in the mating component for damage before installation to ensure full thread engagement.