Value Collection FHS1XX0550-050BX Flat Socket Cap Screw M5x0.8

Product Description

The VALUE COLLECTION FHS1XX0550-050BX is a metric flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features a 90-degree flat head driven by a 3.00 mm hex socket and is manufactured from 316 austenitic stainless steel to Grade A4, providing strong resistance to corrosion, oxidation, and chemical exposure. The screw follows DIN 7991 standard and is partially threaded along its 50 mm overall length with an M5x0.8 thread pitch. It is suited for use in marine, food-processing, chemical, and general industrial assemblies where corrosion resistance and a low-profile head are required.

This fastener is used in metal fabrication, machine assembly, and structural applications where the screw head must sit flush with or below the mating surface. The countersunk 90-degree flat head profile allows it to seat cleanly in standard countersunk holes machined to DIN or ISO specifications. It is appropriate for both indoor and outdoor installations and is commonly installed by machinists, maintenance technicians, and fabricators working in corrosive or wet environments. The partial threading provides a shoulder section that aids alignment and clamping in through-hole assemblies.

Key Features

• 90-degree flat countersunk head for flush surface installation
• 3.00 mm hex socket drive compatible with standard metric Allen keys and hex drivers
• 316 austenitic stainless steel Grade A4 construction for corrosion and chemical resistance
• Partially threaded shank for controlled clamping and alignment in through-hole applications
• Conforms to DIN 7991 fastener standard
• Metric thread M5x0.8 with 50 mm overall length

Compatibility

Designed as a DIN 7991 compliant metric flat socket cap screw for use in standard M5 countersunk holes machined to metric specifications.

Installation Notes

Install using a calibrated 3.00 mm hex key or hex socket driver to avoid rounding the drive recess. Ensure the mating countersink angle matches the 90-degree head geometry before installation. For stainless steel fasteners, apply an appropriate anti-seize compound to reduce the risk of galling during torquing. Follow applicable industry or equipment manufacturer torque guidelines for M5 stainless fasteners.