Value Collection 201177P Button Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION 201177P is a button socket cap screw designed for applications requiring a low-profile, high-strength threaded fastener. Built from alloy steel with a black oxide coating, this screw delivers corrosion resistance and a clean, finished appearance suited for mechanical assemblies, tooling fixtures, and equipment housings. The 3/8-16 UNC thread with a Class 3A fit ensures precise engagement and reliable clamping force. The 7/32-inch hex socket drive accepts a standard hex key for secure installation. Hardness is rated at 36 to 43 HRC, meeting the demands of moderate- to high-load fastening scenarios. Licensed tradespeople and industrial maintenance professionals routinely specify this fastener for both structural and cosmetic fastening tasks.

This fastener is suited for general mechanical assembly, machine building, and equipment maintenance in both light industrial and commercial settings. The button head profile sits flush and low against mating surfaces, making it a practical choice where clearance is limited or aesthetics matter alongside function. It conforms to ANSI/ASME B18.3 and ASTM F835 standards, which are commonly specified in engineering drawings and procurement documents for threaded fasteners in North American applications.

Key Features

• Button head profile provides a low-profile, rounded appearance for clearance-sensitive assemblies
• Alloy steel construction with 36 to 43 HRC hardness for reliable strength under load
• Black oxide finish adds mild corrosion resistance and reduces light glare on exposed hardware
• 3/8-16 UNC thread, Class 3A fit for precise thread engagement
• 7/32-inch hex socket drive compatible with standard hex keys and Allen wrenches
• Meets ANSI/ASME B18.3 and ASTM F835 standards

Compatibility

Designed as a standard 3/8-16 UNC button socket cap screw compatible with any tapped hole or threaded insert conforming to UNC 3/8-16 thread specifications per ANSI/ASME B18.3.

Installation Notes

Installation is performed with a 7/32-inch hex key or socket driver. Ensure the mating threaded hole is clean and free of debris before driving the screw. Apply appropriate torque using a calibrated torque wrench where joint specifications require it. Do not exceed the rated hardness class of the mating material when selecting thread engagement depth.