Value Collection 643258PS M12 X 1.25 X 45 Mm Hex Cap Screw

Product Description

The VALUE COLLECTION 643258PS is a metric hex head cap screw designed for fastening applications requiring a fine-pitch thread and high-strength steel construction. This fully threaded fastener is manufactured to Grade 8.8 steel, indicating a tensile strength suitable for structural and mechanical assemblies. The M12 x 1.25 thread pitch combined with a 45 mm length under head makes it well-suited for precision-fit joints where a coarse-pitch screw would not be appropriate. The bright, uncoated finish leaves the steel in its natural state. Installed with a 19 mm hex wrench or socket, this screw conforms to DIN 961 and ISO 8676 standards.

This fastener is used in metric mechanical assemblies across industrial, HVAC equipment, and general trade applications where a fine-pitch M12 screw is specified. Fine-pitch threads provide greater resistance to loosening under vibration compared to standard-pitch variants. The fully threaded shank engages the entire clamping length, which is beneficial in thin-material or blind-hole fastening scenarios. Trades including HVAC installation, millwright, and general mechanical service commonly encounter this specification when working on equipment frames, flanges, and machinery mounts.

Key Features

• M12 x 1.25 fine-pitch thread - conforms to DIN 961 and ISO 8676 standards
• Grade 8.8 steel construction - high-strength metric fastener rating
• Fully threaded shank - 45 mm length under head for maximum thread engagement
• 19 mm hex drive - compatible with standard metric sockets and wrenches
• Bright uncoated finish - bare steel, suitable for applications where coating is not required or will be applied separately

Compatibility

Designed as a standard metric replacement or service fastener for any assembly specifying an M12 x 1.25 x 45 mm fully threaded hex head cap screw per DIN 961 or ISO 8676.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson familiar with metric fastener specifications. Always verify that the mating thread is M12 x 1.25 fine pitch before installation, as this pitch is not interchangeable with the standard M12 x 1.75 coarse-pitch thread. Power down and de-energize any equipment before removing or replacing structural fasteners. Use a calibrated torque wrench and follow the equipment manufacturer's torque specification for Grade 8.8 M12 fasteners.