Holo-krome 65038 Button Socket Cap Screw 3/8-24 1 in

Product Description

The HOLO-KROME 65038 is a button socket cap screw designed for applications requiring a low-profile fastener with high tensile strength. Sized at 3/8-24 UNF fully threaded with a 1-inch length under head, it accepts a 7/32-inch hex socket drive. The alloy steel construction is finished in black oxide for corrosion resistance and reduced light reflection. Hardness is rated at 38 HRC, meeting ANSI/ASME B18.3 and ASTM F835 standards. The 3A thread fit class ensures a precise, snug engagement. This fastener is installed by machinists, maintenance technicians, and mechanical contractors in industrial and commercial assemblies.

The 65038 is suited for mechanical assemblies, fixture builds, machine frames, and equipment panels where a flush or near-flush fastener profile is needed. The right-hand thread direction and UNF thread standard make it a common choice in precision equipment, tooling jigs, and structural hardware applications where controlled thread engagement is required. The black oxide finish also makes it a functional choice in applications where glare reduction is a practical concern.

Key Features

• Button head profile provides low-profile installation in tight clearance assemblies
• 7/32-inch hex socket drive for standard Allen key or hex bit tooling
• Alloy steel construction rated at 38 HRC hardness
• Black oxide finish for mild corrosion resistance and low reflectivity
• Fully threaded 3/8-24 UNF right-hand thread, class 3A fit
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-supply button socket cap screw for mechanical assemblies requiring a 3/8-24 UNF fully threaded fastener with a 1-inch length under head.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician using the correct 7/32-inch hex key or socket bit. Ensure mating threads are clean and free of debris before driving. Do not exceed the rated thread engagement depth for the base material. Follow applicable fastener torque guidelines referenced in ANSI/ASME B18.3 for alloy steel cap screws.