Value Collection 643774PR Hex Head Cap Screw M20 X 2.50

Product Description

The VALUE COLLECTION 643774PR is a metric hex head cap screw designed for general industrial and mechanical fastening applications. This fully threaded fastener is manufactured from Grade 8.8 steel with a bright uncoated finish. It carries a thread size of M20 x 2.5 and measures 130 mm under the head, making it suited to heavier-duty structural and equipment assembly work. Installation requires a 30 mm hex wrench or socket. Conformance to DIN 933 and ISO 4017 standards ensures dimensional consistency and load-rated interchangeability with other metric fasteners in the same specification class. Machinists, millwrights, and maintenance technicians are the typical end users.

This screw is used across a wide range of industrial, manufacturing, and maintenance settings where metric fasteners are specified. Full threading along the entire shank allows maximum thread engagement in through-hole and deep-clearance applications. The uncoated bright finish is suitable for interior, dry, or controlled environments where corrosion protection coatings are not required. Applications include machine frames, equipment mounting, structural steel assembly, and general MRO fastening tasks. Sold individually; minimum order quantity is 10 pieces per order.

Key Features

• Grade 8.8 steel construction provides a medium-high tensile strength rating suitable for structural fastening
• Fully threaded shank for maximum thread engagement in through-hole applications
• M20 x 2.5 metric thread form conforms to standard metric pitch specifications
• DIN 933 and ISO 4017 compliance ensures dimensional interchangeability with other conforming metric hex cap screws
• 30 mm hex drive compatible with standard metric hex sockets and wrenches
• Bright uncoated finish for use in dry, interior, or controlled environments

Compatibility

Designed as a standard-dimension replacement or service fastener for any application specifying an M20 x 2.50 x 130 mm fully threaded hex head cap screw per DIN 933 or ISO 4017.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or assembly technicians using a 30 mm hex socket and torque wrench. Always de-energize and lock out any equipment before fastener service work begins. Follow the equipment manufacturer's torque specifications for M20 Grade 8.8 fasteners; do not substitute torque values from this listing. Thread condition and hole cleanliness should be verified before installation to ensure proper seating and clamp load.