Value Collection 823030PS M4x0.7 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION 823030PS is a metric flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. The 90-degree flat head seats fully into a countersunk hole, leaving a smooth surface when properly installed. It is driven with a 2.5 mm hex socket key. Manufactured from 18-8 austenitic stainless steel to Grade A2, this screw offers good corrosion resistance suitable for general industrial, marine-adjacent, and food-adjacent environments. The M4x0.7 thread is fully threaded over the 20 mm overall length, conforming to DIN 7991. These fasteners are used by machinists, millwrights, and assembly technicians in light mechanical and structural applications.

This screw is suited for metric-dimensioned assemblies where a low-profile or flush head is required. The countersunk head style makes it a common choice in panel mounting, enclosure assembly, machine guarding, and precision equipment fabrication. The fully threaded shank provides maximum thread engagement in thinner materials or through-hole configurations. The bright uncoated finish is typical for stainless fasteners used in controlled or semi-controlled environments.

Key Features

• 90-degree flat countersunk head seats flush with workpiece surface
• M4x0.7 metric thread, fully threaded over 20 mm overall length
• 2.5 mm hex socket drive for positive torque transfer in tight clearances
• 18-8 austenitic stainless steel, Grade A2, for corrosion resistance without coating
• Conforms to DIN 7991 fastener standard
• Bright uncoated finish with no added surface treatment

Compatibility

Designed as a DIN 7991-compliant metric flat socket cap screw for use in standard M4 countersunk holes with 0.7 mm thread pitch in metric assemblies.

Installation Notes

Installation requires a properly countersunk hole with a 90-degree included angle to achieve a flush seating surface. Use a calibrated 2.5 mm hex key or bit driver; avoid worn drivers that can strip the socket. Power down or de-energize any equipment before servicing fastened assemblies. Do not exceed the mechanical torque limits appropriate for M4 stainless fasteners, as 18-8 stainless is susceptible to galling under aggressive power driving.