Value Collection 1424MSL 1/4-20 Fillister Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 1424MSL is a 1/4-20 fillister head machine screw designed for general-purpose fastening in metal assemblies, machinery, and equipment. The fillister head profile offers a taller head height and deeper slot than a standard pan head, providing more torque engagement with a flat-blade screwdriver. Manufactured from steel with a zinc finish, this screw meets ASME B18.6.3 and SAE J82 standards. The 1-1/2-inch length is measured under the head. Machinists, millwrights, and maintenance technicians commonly use this fastener in close-tolerance applications where a recessed or countersunk head is not required but a tighter head profile is preferred.

This screw is suited for metal fabrication, machine assembly, and maintenance repair operations where a 1/4-20 thread pitch is specified. The slotted drive is compatible with standard flat-blade screwdrivers and manually operated screwdrivers used in light industrial and mechanical assembly settings. The zinc finish provides basic corrosion resistance for indoor and mildly corrosive environments. This fastener ships in multiples of 100 units, making it appropriate for production line use or shop stock replenishment.

Key Features

• Fillister head profile provides increased head height and deeper drive slot for higher torque transfer
• 1/4-20 unified coarse thread for broad compatibility with standard tapped holes and nuts
• Steel construction meets ASME B18.6.3 and SAE J82 material and dimensional standards
• Zinc finish offers basic corrosion protection suitable for indoor and light-duty environments
• 1-1/2-inch length measured under the head for accurate installation depth planning
• No washer included; ships without integrated washer for clean, direct seating against workpiece

Compatibility

Designed as a standard 1/4-20 inch-series machine screw for use in any application requiring an ASME B18.6.3 or SAE J82 compliant fillister head fastener with a slotted drive.

Installation Notes

Installation is performed with a flat-blade screwdriver sized to match the slot dimensions of a 1/4-20 fillister head screw. Ensure the mating tapped hole or nut meets 1/4-20 UNC thread specifications before installation. Do not overtorque, as this can strip the slot or damage the mating threads. Power down any equipment and follow applicable lockout/tagout procedures before replacing fasteners in live machinery.