Value Collection 43166 M10x1.5 Flat Socket Cap Screw 25 Pack

Product Description

The VALUE COLLECTION 43166 is a metric flat socket cap screw engineered for applications where a flush or countersunk fastener profile is required. Built to DIN 7991 standard from 12.9 grade alloy steel with a black oxide finish, this screw delivers high tensile strength and moderate corrosion resistance in a compact, low-profile head design. The M10x1.5 thread is fully threaded along its 20 mm overall length, and the 6 mm hex socket drive ensures positive torque transfer with standard hex keys or socket drivers. Each package contains 25 pieces. This fastener is installed by machinists, millwrights, and maintenance technicians across industrial and mechanical assembly applications.

This screw is suited for countersunk bolt patterns in metal assemblies, machine frames, fixtures, jigs, and mechanical enclosures where the fastener head must sit flush with or below the surface. The 90-degree flat head geometry conforms to standard countersink profiles. The 12.9 material grade means this fastener is appropriate for high-load, high-clamping-force joints. Black oxide finish provides mild corrosion resistance and reduces light reflection, making it a common choice in precision machinery and tooling environments.

Key Features

• DIN 7991 standard flat socket cap screw with 90-degree flat head for flush countersunk installation
• M10x1.5 metric thread, fully threaded along the entire 20 mm overall length
• 12.9 alloy steel material grade provides high tensile and proof load ratings for demanding joint applications
• 6 mm hex socket drive accepts standard hex keys and hex-bit socket drivers
• Black oxide finish for mild corrosion resistance and low-reflectivity appearance
• Sold in a 25-piece package with a minimum order quantity of 1 package

Compatibility

Designed as a DIN 7991-compliant metric flat socket cap screw for use in any application requiring an M10x1.5 countersunk fastener with a 90-degree flat head profile.

Installation Notes

Flat socket cap screws of this grade are typically installed by machinists, millwrights, or mechanical maintenance technicians using calibrated torque wrenches and properly sized hex keys or hex-bit drivers. Always ensure the mating countersink is machined to the correct 90-degree angle and diameter before installation. De-energize, de-pressurize, or otherwise safe-off any equipment before performing fastener service. Do not mix metric and inch-series fasteners in the same joint.