Holo-krome 64026 Button Socket Cap Screw 10-24 1/4 in

Product Description

The HOLO-KROME 64026 is a button socket cap screw designed for applications requiring a low-profile head with high clamping strength. The hex socket drive accepts a 1/8-inch hex key for installation in confined spaces where a standard hex head wrench cannot reach. Manufactured from alloy steel with a black oxide finish, the fastener meets ANSI/ASME B18.3 and ASTM F835 standards. The 10-24 UNC thread is cut to a 3A fit class with right-hand direction and a fully threaded shank, providing precise thread engagement for consistent torque and pullout resistance. Hardness is rated at 38 HRC.

This fastener is suited for mechanical assemblies, machinery guards, enclosures, and structural fixtures where a flush or near-flush fastener head is required. The button head profile distributes clamping load over a wider bearing surface than a standard cap screw head, making it a common choice in sheet metal and thin-panel assemblies. Licensed tradespeople and machine technicians working in industrial, commercial, and light manufacturing environments regularly specify this style of fastener for both OEM and field-service applications.

Key Features

• Button head profile provides low-profile, wide-bearing-surface clamping
• 1/8-inch hex socket drive for use in tight or recessed clearances
• Alloy steel construction rated to 38 HRC hardness
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Fully threaded shank with 10-24 UNC right-hand thread, 3A fit class
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style replacement or standard hardware addition for any assembly specifying a 10-24 UNC button socket cap screw per ANSI/ASME B18.3 with a 3A thread fit class.

Installation Notes

Installation requires a 1/8-inch hex key or hex socket bit. Verify that the mating tapped hole is cut to a 10-24 UNC 3B tolerance before installation. De-energize or lock out any equipment before fastener replacement or service. Avoid over-torquing alloy steel cap screws in thin or soft base materials, as the button head drive can round out if the hex key is worn.