Value Collection 3124MSL 5/16-18 Fillister Slotted Machine Screw

Product Description

The VALUE COLLECTION 3124MSL is a fillister head machine screw designed for general fastening applications in metal assemblies and mechanical equipment. It features a 5/16-18 unified coarse thread and measures 1.5 inches in length under the head. The fillister head profile provides a larger bearing surface than a pan head while maintaining a compact footprint that works well in counterbored holes. Drive type is slotted, compatible with standard flat-blade screwdrivers. Constructed from steel with a zinc finish, this screw meets ASME B18.6.3 and SAE J82 standards. It is a stock fastener suited for technicians and tradespeople who need reliable, standardized hardware for equipment assembly, repair, or field service work.

This screw is used in a wide range of industrial, mechanical, and trade applications where a unified coarse thread in a 5/16-18 size is specified. Common installation scenarios include securing brackets, enclosures, panels, and machine components in HVAC equipment, electrical panels, pump housings, and general mechanical assemblies. The zinc finish provides light corrosion resistance for indoor or protected environments. Sold individually per package with a minimum order quantity of 10 units.

Key Features

• 5/16-18 unified coarse thread for high holding strength in standard tapped holes
• Fillister head style suits counterbored and close-clearance installations
• Slotted drive compatible with standard flat-blade screwdrivers
• Steel construction with zinc finish for light corrosion resistance
• Meets ASME B18.6.3 and SAE J82 fastener standards
• Inch measurement system, length measured under head

Compatibility

Designed as a standard inch-series machine screw for use in any application requiring a 5/16-18 coarse thread, 1.5-inch length under head, fillister head profile, and slotted drive in a steel zinc-finished fastener.

Installation Notes

Installation is performed by any trade technician or mechanic working with standard inch-series fasteners. Ensure the mating tapped hole or nut is 5/16-18 thread before installation. Do not overtighten slotted-drive fasteners, as the drive is susceptible to cam-out under excessive torque. Follow applicable equipment manufacturer torque guidelines and relevant codes such as the NEC or ASME standards where fastener specifications are called out.