Holo-krome 87216 Flat Socket Cap Screw M16x2 12.9 Alloy Steel

Product Description

The HOLO-KROME 87216 is a metric flat socket cap screw designed for flush or countersunk fastening applications in precision mechanical assemblies. It features an M16x2 thread size, a 90-degree flat head with a 10 mm hex socket drive, and is fully threaded along its 50 mm overall length. Manufactured from 12.9 grade alloy steel with a black oxide finish, it delivers high tensile strength and moderate corrosion resistance. The head diameter measures 33.60 mm, and the head height is 8.8000 decimal inches as specified. This fastener conforms to ANSI B1.13M and ISO 10642 standards and carries a Thread Fit Class of 4G.

This screw is suited for industrial machinery, tooling fixtures, die sets, and structural mechanical assemblies where a low-profile countersunk head is required. The metric thread standard and ISO 10642 compliance make it appropriate for equipment manufactured to international specifications. Maintenance technicians, millwrights, and mechanical assemblers working on metric-spec equipment are the typical installers. It is sold in single-piece quantity.

Key Features

• M16x2 metric thread with 4G thread fit class for precise engagement
• 90-degree flat head profile allows flush or countersunk installation
• 10 mm hex socket drive for high torque application with standard Allen keys
• 12.9 alloy steel material grade provides high tensile and proof load strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ANSI B1.13M and ISO 10642 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-use metric fastener for countersunk hex socket applications requiring an M16x2 thread and ISO 10642 flat head geometry.

Installation Notes

Installation should be performed by qualified mechanical assemblers or maintenance technicians familiar with metric fastener systems. Ensure the mating countersunk hole is machined to the correct 90-degree included angle to match the flat head profile before installation. Use a calibrated torque wrench with the appropriate 10 mm hex key bit and follow published torque specifications for 12.9 grade M16 fasteners per the applicable engineering standard. Do not substitute a lower-grade fastener in applications specified for 12.9 material.