Value Collection 581119PR Hex Socket Cap Screw 4-40 Unc

Product Description

The VALUE COLLECTION 581119PR is a hex socket cap screw designed for precision fastening in tight-clearance applications. Manufactured from alloy steel with a black oxide finish, this screw offers solid corrosion resistance and reduced light reflection in low-visibility environments. It carries a 4-40 UNC thread size, measures 7/16 inches under the head, and is fully threaded along its entire length. The 3/32 inch hex drive requires an Allen key or hex bit driver for installation. This fastener suits mechanical assemblies, instrument panels, electronics enclosures, and light-duty machine work where small-diameter threaded fasteners are called for.

This screw is suited for residential, commercial, and industrial assembly applications where compact, high-strength fastening is required. Fully threaded construction provides maximum thread engagement across the full shaft length, making it appropriate for thin-material applications such as sheet metal brackets, instrument housings, and precision equipment. It is commonly installed by machinists, electronics technicians, and mechanical assemblers working with small-form-factor components.

Key Features

• 4-40 UNC thread size for standard small-diameter fastening
• 7/16 inch length under head for shallow and thin-material installations
• Fully threaded for maximum thread engagement along entire shaft
• Alloy steel construction for strength in demanding mechanical environments
• Black oxide finish provides moderate corrosion resistance and low-glare appearance
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard 4-40 UNC hex socket cap screw suitable for use in any application requiring ASME/ANSI B18.3 compliant small-diameter alloy steel fasteners.

Installation Notes

Install using a 3/32 inch hex key or Allen driver; using an improperly sized driver risks stripping the socket. Ensure mating threads are clean and free of debris before installation. Apply appropriate thread-locking compound if vibration resistance is required by the assembly specification. Minimum order quantity is 100 pieces per order.