Value Collection 581148PR Hex Socket Cap Screw 4-48 Unf

Product Description

The VALUE COLLECTION 581148PR is a hex socket cap screw designed for precision fastening in tight-clearance assemblies. This fully threaded fastener features a 4-48 UNF thread and a 7/16 inch length under head. The 3/32 inch hex drive accepts a standard hex key for controlled torque application. Constructed from alloy steel with a black oxide finish, this screw provides solid mechanical strength and corrosion resistance appropriate for indoor mechanical and industrial assemblies. It is a small-diameter, fine-pitch fastener suited for applications where standard coarse-thread screws are not appropriate.

This socket cap screw is used in precision mechanical assemblies where fine-thread engagement and a low-profile head are required. Typical applications include instrument enclosures, light machinery, fixture fabrication, and tooling jigs. The 4-48 UNF thread pitch is common in small mechanical and instrument-grade assemblies. Licensed machinists, millwrights, and maintenance technicians are the primary installers of this fastener type.

Key Features

• 4-48 UNF fine thread for precise, high-engagement fastening
• Fully threaded along the full 7/16 inch length under head
• 3/32 inch hex socket drive compatible with standard hex keys
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide coating provides surface protection and reduces light reflection in optical or instrument applications

Compatibility

Designed as an OEM-style replacement or standard-fit fastener for assemblies requiring a 4-48 UNF hex socket cap screw with a 7/16 inch length under head and 3/32 inch hex drive.

Installation Notes

Install using a calibrated 3/32 inch hex key or hex bit driver. Ensure the mating thread is clean and free of debris before installation. Do not exceed the torque rating appropriate for the fastener size and material grade as specified by ASME/ANSI B18.3. Minimum order quantity of 100 pieces applies to this SKU.