Value Collection 644253PS M20x2.5 Hex Cap Screw Grade 8.8

Product Description

The VALUE COLLECTION 644253PS is a metric hex head cap screw engineered for structural and mechanical fastening applications. Manufactured from Grade 8.8 steel with a bright, uncoated finish, this screw meets DIN 931 and ISO 4014 standards for partially threaded hex cap screws. The M20 x 2.50 thread profile and 130 mm length under head make it well suited for heavy-duty bolted connections requiring precise clamping force. The 30 mm hex drive size is compatible with standard industrial wrenches and sockets. At 0.756 pounds per piece, it delivers the mass and strength expected from a full-gauge metric fastener used in demanding trade and industrial environments.

This screw is used in structural steel assemblies, heavy equipment fabrication, machinery mounting, and industrial construction. The partial thread design concentrates grip in the shank area, making it appropriate for through-bolt applications where the unthreaded shank bears shear load. Maintenance technicians, millwrights, ironworkers, and mechanical contractors routinely specify DIN 931 and ISO 4014 fasteners for these conditions. The M20 size is common in mid-to-heavy structural connections across both commercial and industrial settings.

Key Features

• Grade 8.8 steel provides high tensile strength suitable for structural fastening
• Partial threading per DIN 931 and ISO 4014 allows shank to carry shear load in through-bolt applications
• M20 x 2.50 mm thread size with 130 mm length under head for deep grip in thick assemblies
• 30 mm hex drive compatible with standard metric sockets and open-end wrenches
• Bright, uncoated finish for bare-steel applications or where coating would interfere with fit
• Sold individually with a minimum order quantity of one piece

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for metric bolted assemblies specifying M20 x 2.50 x 130 mm hex cap screws conforming to DIN 931 or ISO 4014.

Installation Notes

Install using a calibrated torque wrench and the appropriate metric socket sized for the 30 mm hex. Always verify thread engagement and ensure mating nut or tapped hole conforms to M20 x 2.50 specifications before applying final torque. Follow applicable industry standards and equipment manufacturer torque requirements for the specific assembly. Inspect threads for damage and do not install if corrosion, galling, or deformation is present.