Holo-krome 87112 Flat Socket Cap Screw M6x1 12.9 Alloy Steel

Product Description

The HOLO-KROME 87112 is a metric flat socket cap screw designed for applications requiring a low-profile, flush-mount fastener with high tensile strength. Built from 12.9 grade alloy steel with a black oxide finish, this screw delivers exceptional shear and clamp load resistance in demanding assemblies. The 90-degree flat head seats flush into countersunk holes, eliminating protrusion that could interfere with mating surfaces or moving components. Drive engagement is through a 4 mm hex socket. Overall length is 40 mm with an M6x1 thread and a partially threaded shank, conforming to ANSI B1.13M and ISO 10642 standards. Licensed mechanics, machinists, and MRO professionals install this type of fastener in precision mechanical assemblies.

This screw is suited for use in metric machine assemblies, fixtures, tooling plates, and structural joints where countersunk seating is required. The 12.9 material grade makes it appropriate for high-stress environments including hydraulic component mounting, industrial machinery, and equipment requiring tight thread fit. The Thread Fit Class 4G designation supports controlled engagement in precision-tapped metric holes. Partial threading allows for tighter shoulder clamping in thick-material joints. Minimum order quantity is 100 pieces; individual package quantity is 1.

Key Features

• 12.9 alloy steel construction for high tensile and proof load capacity
• 90-degree flat head profile seats flush in countersunk holes to eliminate surface protrusion
• 4 mm hex socket drive for standard hex key installation
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Partially threaded shank for improved clamping force in thick-material joints
• Conforms to ANSI B1.13M and ISO 10642 fastener standards

Compatibility

Designed for use in metric-threaded assemblies requiring an M6x1 countersunk socket cap screw with a 4G thread fit class per ANSI B1.13M and ISO 10642. Verify countersink angle and hole diameter match the 90-degree, 13.44 mm head profile before installation.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a standard 4 mm hex key or socket driver. Ensure the mating hole is countersunk to 90 degrees and the thread is clean and free of debris before driving the fastener. Do not exceed the rated clamp load for the material grade; do not substitute lower-grade fasteners in high-load applications. Follow applicable machinery safety lockout procedures before disassembling or reassembling fastened joints.