Value Collection 534306BR M20x2.5 Flat Socket Cap Screw

Product Description

The VALUE COLLECTION 534306BR is a metric flat socket cap screw manufactured from grade 12.9 alloy steel with a black oxide finish. The 90-degree flat head profile sits flush with or below the mating surface when fully seated, making it well suited for applications where a low-profile or countersunk fastener is required. Drive engagement is through a hex socket, sized at 12 millimeters. The screw carries an M20x2.5 thread designation and measures 90 millimeters in overall length with partial threading along the shank. It conforms to DIN 7991. Machinists, millwrights, and mechanical contractors working on structural assemblies, machine frames, and heavy equipment will find this fastener appropriate for high-load bolted joints.

This fastener is intended for metric applications requiring a countersunk flat-head profile in steel, cast iron, or similarly hard substrates. The grade 12.9 rating indicates very high tensile strength, which makes it appropriate for dynamically loaded or torque-critical joints. The black oxide finish provides mild corrosion resistance and reduces light reflection in finished assemblies. It is sold individually and is appropriate for maintenance, repair, and production use where a single replacement or low-quantity purchase is needed.

Key Features

• Grade 12.9 alloy steel construction for high tensile and proof load capacity
• 90-degree flat head seats flush in standard countersunk holes
• 12 millimeter hex socket drive for positive torque engagement
• Black oxide finish provides mild corrosion and abrasion resistance
• Partial threading preserves shank grip length for shear-loaded joints
• Conforms to DIN 7991 fastener standard for dimensional consistency

Compatibility

Designed for use in metric countersunk bolt patterns conforming to DIN 7991 dimensional requirements, compatible with M20x2.5 threaded holes in steel, cast iron, and other structural substrates.

Installation Notes

Installation should be performed by a qualified mechanic or millwright familiar with metric fastener torque practices. Always verify the mating hole is properly countersunk to the correct included angle before installation. Use a calibrated torque wrench with the appropriate 12 millimeter hex socket bit; do not exceed the torque value specified by the equipment manufacturer or relevant engineering standard for grade 12.9 fasteners. Ensure all surfaces are clean and free of debris before final assembly.