Value Collection A996757 Hex Socket Cap Screw M20 X 2.50

Product Description

The VALUE COLLECTION A996757 is a metric hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this fastener carries a material grade of 12.9, placing it among the highest strength classes available for metric fasteners. The M20 x 2.50 thread size pairs with a 180 mm length under head and partial threading, making it well suited for through-bolt and clearance-hole applications where thread engagement is concentrated at the end of the fastener. Installation requires a hex socket driver. This screw conforms to DIN 912 and ISO 898-1 standards.

This fastener is used across a wide range of heavy-duty mechanical and industrial applications, including machinery assembly, equipment mounting, structural steel fabrication, and hydraulic press or conveyor frame construction. The M20 size and 12.9 grade rating make it appropriate for high-load, high-torque joints where a standard grade fastener would be undersized. Tradespeople including millwrights, pipefitters, and mechanical contractors commonly use this type of fastener. It is sold in a package quantity of 5 per order.

Key Features

• M20 x 2.50 metric thread size with 180 mm length under head
• Partially threaded shank for clearance-hole and through-bolt applications
• Alloy steel construction with 12.9 material grade for maximum tensile strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Hex socket drive type for high-torque installation with standard Allen keys or socket tools
• Conforms to DIN 912 and ISO 898-1 fastener standards

Compatibility

Designed as a standard DIN 912 metric hex socket cap screw for use in any M20 x 2.50 tapped hole requiring a partially threaded, 12.9-grade alloy steel fastener.

Installation Notes

Installation should be performed by a qualified millwright, mechanical contractor, or similarly trained tradesperson familiar with high-strength metric fastener procedures. Ensure the mating tapped hole meets M20 x 2.50 thread specification and that the hole depth accommodates the 180 mm shank length before assembly. Always degrease or prepare mating surfaces per joint design requirements before torquing. Do not mix fastener grades within a joint assembly, as doing so can compromise the integrity of the connection.