Value Collection FHS1X0645-025BX M6x1 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION FHS1X0645-025BX is a metric flat socket cap screw designed for flush or countersunk fastening applications where a low-profile head is required. The screw features a 90-degree flat head with a 4.00 mm hex socket drive, an M6x1 thread, and an overall length of 45.00 mm. It is partially threaded, which helps resist loosening under shear loads. Constructed from 18-8 austenitic stainless steel to Grade A2 per DIN 7991, it delivers corrosion resistance suited to wet, chemical, or marine-adjacent environments. This fastener is installed by machinists, millwrights, maintenance technicians, and fabricators working on assemblies that require a flush surface finish.

This flat socket cap screw is used in mechanical assemblies, equipment panels, fixtures, and structural connections where a countersunk seat is machined or stamped into the mating surface. The hex socket drive requires an Allen key or hex bit driver, making it well-suited to confined spaces where a wrench cannot engage a traditional bolt head. Its partial threading is appropriate for applications with a defined grip length. Sold in a minimum order quantity of 25 pieces, this fastener suits both repair and small-production use cases.

Key Features

• 90-degree flat head seats flush in countersunk holes, eliminating protrusion above the mating surface
• 4.00 mm hex socket drive for use with standard Allen keys or hex bit drivers
• M6x1 metric thread conforms to DIN 7991 fastener standard
• Partially threaded shank provides a defined grip zone and resists lateral shear
• 18-8 austenitic stainless steel, Austenitic Grade A2, resists corrosion in wet and mildly chemical environments
• 45.00 mm overall length accommodates moderate-depth countersunk assemblies

Compatibility

Designed as a DIN 7991-compliant M6x1 flat socket cap screw for use in any metric-threaded countersunk application requiring an 18-8 stainless steel Grade A2 fastener with a 4.00 mm hex socket drive.

Installation Notes

Install using a calibrated 4.00 mm hex key or hex bit driver to avoid rounding the socket. Ensure the mating surface is machined or stamped to a 90-degree countersink angle matching the head geometry before installation. Power down and de-energize any equipment before performing fastener service in electrical or mechanical enclosures. Follow applicable mechanical codes and torque guidance from the equipment manufacturer for M6 stainless fasteners.