Value Collection 3120MSP 5/16-18 X 1-1/4 in Pan Head Slotted Screw

Product Description

The VALUE COLLECTION 3120MSP is a pan head machine screw designed for general-purpose mechanical assembly. It features a 5/16-18 unified coarse thread and measures 1-1/4 inches under the head. The slotted drive accepts a standard flat-blade screwdriver, making it a straightforward choice for field installation and maintenance applications. Constructed from steel with a zinc-plated finish, the 3120MSP meets ASME B18.6.3 and SAE J82 dimensional and material standards. The zinc coating provides a baseline level of corrosion resistance suitable for indoor and light-duty environments. Each screw weighs approximately 0.031 pounds.

This screw is appropriate for use in HVAC equipment panels, electrical enclosures, plumbing fixture brackets, and other trade assemblies where a standard 5/16-18 fastener is specified. The pan head profile offers a low-profile bearing surface without the need for a washer, as confirmed by the without-washer specification. It is well suited to sheet metal and machined-hole applications where a flush or near-flush head is acceptable. Installers in mechanical, electrical, and plumbing trades will find this a reliable stock fastener for routine equipment servicing and panel reassembly.

Key Features

• 5/16-18 unified coarse thread for compatibility with standard tapped holes and hex nuts
• 1-1/4 inch length measured under the head per ASME B18.6.3
• Pan head profile provides a broad bearing surface without requiring a washer
• Slotted drive accepts flat-blade screwdrivers for straightforward installation
• Steel construction with zinc-plated finish for corrosion resistance in light-duty applications
• Meets ASME B18.6.3 and SAE J82 dimensional and mechanical standards

Compatibility

Designed as a standard 5/16-18 coarse-thread machine screw suitable for use in any application specifying ASME B18.6.3 pan head slotted fasteners of this thread and length.

Installation Notes

Install using a flat-blade screwdriver sized appropriately for the slotted head to avoid cam-out and head damage. Verify that the mating hole is properly tapped to 5/16-18 before installation. De-energize all electrical equipment and shut off fluid systems before replacing fasteners on live panels or pressurized assemblies. Do not overtighten into soft materials; use the torque value specified by the equipment manufacturer.