Value Collection 535028PR M4x0.7 Button Socket Cap Screw

Product Description

The VALUE COLLECTION 535028PR is a fully threaded button socket cap screw manufactured from alloy steel with a black oxide finish. Conforming to ANSI/ASME B18.3.4M and ISO 7380 standards, this fastener features an M4x0.7 thread size with a 16 mm length under the head. The button head profile provides a low-profile, finished appearance while the hex socket drive allows secure torque application with a 2.5 mm hex key. A material grade of 12.9 and hardness rating of 38-43 HRC make this screw suited for high-strength fastening applications in mechanical assemblies.

This screw is commonly used in light to medium mechanical assemblies where a flush, low-profile head is preferred over a traditional cap or pan head style. Typical applications include machine guards, covers, brackets, and precision equipment enclosures. The right-hand metric thread with a 4G/6G thread fit class provides reliable engagement in standard metric threaded holes. Electricians, mechanical assemblers, and maintenance technicians working with metric hardware will find this fastener appropriate for a range of equipment service and fabrication tasks.

Key Features

• Button head profile with 2.5 mm hex socket drive for low-clearance installations
• Alloy steel construction at material grade 12.9 for high-strength performance
• Black oxide coating provides mild corrosion resistance and reduces light reflection
• Hardness rated 38-43 HRC for durability under load
• Fully threaded M4x0.7 metric thread, right-hand direction
• Meets ANSI/ASME B18.3.4M and ISO 7380 fastener standards

Compatibility

Designed for use in standard M4x0.7 metric threaded holes. Thread fit class 4G/6G ensures compatibility with commonly toleranced metric nuts and tapped components per ISO and ASME standards.

Installation Notes

Install using a calibrated 2.5 mm hex key or hex socket bit driver. Verify that the receiving hole thread class is compatible with the 4G/6G fit class before installation. De-energize and lock out any equipment before accessing fastener locations in electrical or powered mechanical assemblies. Do not substitute with a lower-grade fastener when replacing a grade 12.9 screw in a load-bearing application.