Value Collection 1405MSL 1/4-20 X 5/16 Fillister Slotted Screw

Product Description

The VALUE COLLECTION 1405MSL is a 1/4-20 fillister head machine screw with a slotted drive, manufactured from steel with a zinc finish. It measures 5/16 inches in length under the head and conforms to ASME B18.6.3 and SAE J82 standards. The fillister head profile features a small-diameter, tall-cylindrical head that provides a deep slot for positive driver engagement and a reduced footprint compared to pan or round head styles. This fastener is used by maintenance mechanics, electricians, HVAC technicians, and plumbers wherever a compact, reliable threaded fastener is required in light-duty steel assemblies.

This screw is suited for general-purpose mechanical assembly in residential and light commercial applications. The 1/4-20 unified coarse thread is one of the most common thread sizes in trade work, found in equipment enclosures, panel mounting, motor components, and fixture attachment. The zinc finish provides basic corrosion resistance for indoor and light-exposure environments. This item is sold individually but requires a minimum order quantity of 100 units per order.

Key Features

• 1/4-20 unified coarse thread for broad hardware compatibility
• 5/16-inch length under head suits thin-stock and panel fastening applications
• Fillister head profile delivers a deep slotted recess for secure driver contact
• Steel construction with zinc finish for corrosion resistance in indoor environments
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• Grade J82 material classification per SAE fastener standards

Compatibility

Designed as a general-purpose 1/4-20 fillister head machine screw for use in standard inch-thread fastener applications across HVAC, electrical, plumbing, and mechanical assemblies where this thread size and head style are specified.

Installation Notes

Install with a flat-blade screwdriver sized to fit the slotted head recess without slipping or damaging the slot. Ensure the mating hole is tapped or pre-threaded to 1/4-20 specifications before driving. Do not overtighten in thin sheet metal or plastic substrates, as the fine thread engagement depth is limited at 5/16-inch length. Follow applicable mechanical codes and equipment manufacturer torque guidance for the assembly being serviced.