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The HOLO-KROME 64038 is a button head socket cap screw designed for applications requiring a low-profile fastener with high clamping strength. Sized at 10-24 UNC with a 1-inch length under head, it is fully threaded and drives with a 1/8-inch hex socket. Manufactured from alloy steel with a black oxide finish, it carries a hardness rating of 38 HRC and meets Thread Fit Class 3A. This fastener is installed by machinists, mechanical contractors, and assembly technicians wherever a smooth, rounded head profile and reliable thread engagement are required.
This screw is suited for light to medium-duty mechanical assemblies in industrial, commercial, and manufacturing environments. The button head profile reduces snag points in tight clearance areas, making it a common choice for machine guards, enclosures, fixtures, and equipment panels. The black oxide finish provides mild corrosion resistance and a uniform appearance. This fastener conforms to ANSI/ASME B18.3 and ASTM F835 standards, which are widely specified in precision mechanical and industrial assembly work.
Designed as a standard 10-24 UNC button socket cap screw suitable for use in any application requiring ANSI/ASME B18.3 compliant hardware with a Class 3A thread fit.
Installation requires a 1/8-inch hex key or socket driver. Power down or de-energize any equipment before fastener service on live assemblies. Verify mating thread class and hole depth before installation to avoid cross-threading or bottoming out. Follow applicable ANSI or equipment manufacturer torque specifications for the fastener size and material grade.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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