Value Collection 1440MSL Machine Screw 1/4-20 Fillister Slotted

Product Description

The VALUE COLLECTION 1440MSL is a 1/4-20 fillister head machine screw designed for general-purpose fastening in metal, plastic, and composite assemblies. The fillister head profile offers a taller head height and smaller diameter than a pan head, making it a practical choice in counterbored applications where a low-profile fastener would lose purchase. At 2.5 inches length under head, this screw provides solid thread engagement in thicker material stacks. The slotted drive is compatible with standard flat-blade screwdrivers, making it accessible in field and shop environments. Finished in zinc for corrosion resistance, the screw is manufactured to ASME B18.6.3 and SAE J82 standards.

This screw is suited for mechanical assemblies, electrical enclosures, HVAC equipment panels, and general trade applications where a coarse-thread 1/4-20 inch fastener with a fillister head is specified. It is commonly installed by HVAC technicians, electricians, plumbers, and industrial maintenance personnel. The 2.5-inch length under head accommodates moderate material thickness without protruding excessively on through-bolt installations. These screws are sold individually as a package of one unit, with a minimum order quantity of 50 units per order.

Key Features

• 1/4-20 coarse thread for broad tool and hardware compatibility
• Fillister head profile suits counterbored holes and confined clearance areas
• Slotted drive accepts standard flat-blade screwdrivers
• Zinc finish provides basic corrosion protection for interior and light-duty exterior use
• Meets ASME B18.6.3 and SAE J82 fastener standards
• Steel construction with Grade J82 material specification

Compatibility

Designed as an OEM-style replacement or service fastener for equipment and assemblies that specify a 1/4-20 x 2.5-inch fillister head slotted machine screw per ASME B18.6.3 or SAE J82.

Installation Notes

Install with an appropriately sized flat-blade screwdriver to avoid cam-out and slot damage. De-energize or isolate any electrical or mechanical system before replacing fasteners on live equipment. Apply thread-locking compound or lockwasher as required by the equipment manufacturer's service documentation. Torque to the value specified by the equipment manufacturer for 1/4-20 steel fasteners in the given base material.