Value Collection 643244PS Hex Head Cap Screw M20 X 2.50

Product Description

The VALUE COLLECTION 643244PS is a metric hex head cap screw designed for bolted assemblies requiring a fully threaded fastener in the M20 thread class. Built to Grade 8.8 steel, it delivers a balanced combination of tensile strength and ductility suited to structural and mechanical connections. The 100 mm length under head and 2.50 mm thread pitch conform to DIN 933 and ISO 4017 standards, making it a direct fit for applications where dimensional compliance is required. This screw is supplied in a bright, uncoated finish. Installation is performed by maintenance technicians, millwrights, and mechanical contractors working on fabricated steel assemblies.

This fastener is used in general industrial, structural, and OEM manufacturing applications where metric fasteners are specified. The fully threaded body allows maximum thread engagement across the full clamped length, making it practical for through-bolt configurations and shallow-depth joints. It is commonly used in machine frames, equipment bases, steel fabrications, and mechanical assemblies that follow metric design standards. A 30 mm hex drive is required for installation.

Key Features

• M20 x 2.50 thread size per metric standard for precise fit in metric-tapped holes
• 100 mm length under head suits medium to long reach bolting applications
• Grade 8.8 steel construction provides high tensile strength with adequate ductility
• Fully threaded shank maximizes thread engagement over the entire clamped length
• Conforms to DIN 933 and ISO 4017 dimensional standards
• Bright uncoated finish for standard indoor or protected environments

Compatibility

Designed as a standard metric hex head cap screw conforming to DIN 933 and ISO 4017, suitable for use in any application specifying an M20 x 2.50 x 100 mm fully threaded fastener in Grade 8.8 steel.

Installation Notes

Installation requires a 30 mm hex wrench or socket. Always ensure the mating threaded hole or nut is also rated for Grade 8.8 or higher to maintain joint integrity. De-energize and lock out any powered equipment before performing fastener work on live assemblies. Apply thread lubricant or anti-seize only when specified by the equipment manufacturer, as it affects achieved clamp load at a given torque.