Value Collection 1405MST 1/4-20 Truss Head Machine Screw

Product Description

The VALUE COLLECTION 1405MST is a 1/4-20 unified coarse thread machine screw with a truss head and slotted drive, manufactured from steel with a zinc finish. It measures 5/16 inches in length under the head and is built to ASME B18.6.3 and SAE J82 standards. The low-profile truss head distributes clamping load over a wide bearing surface, making it a practical choice where a pan or flat head would not provide enough coverage. This fastener ships in single-package quantities with a minimum order of 100 pieces, suiting contractors and shop technicians who need consistent stock for production or service work.

This machine screw is used in light mechanical assemblies, electrical enclosures, HVAC equipment panels, and general trade fabrication where a 1/4-20 threaded hole or nut is already in place. The zinc finish provides basic corrosion resistance for indoor and sheltered outdoor applications. At 5/16 inches length under head, it is suited to thin-gauge sheet metal assemblies and shallow-boss applications where a longer fastener would bottom out or protrude.

Key Features

• 1/4-20 unified coarse thread for broad compatibility with standard tapped holes and nuts
• Truss head profile offers a wide, low-profile bearing surface
• Slotted drive works with standard flat-blade screwdrivers and bits
• Steel construction with zinc finish for basic corrosion resistance
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• Sold in multiples of 100 to support production and service volume needs

Compatibility

Designed for use in any assembly requiring a 1/4-20 threaded fastener with a truss head profile, including sheet metal panels, electrical enclosures, and light mechanical equipment typical of HVAC, electrical, and general trade service work.

Installation Notes

Install with a flat-blade screwdriver or slotted bit sized to the head slot to avoid cam-out and burring. Ensure the mating thread is clean and free of debris before driving. Do not overtighten in thin sheet metal or plastic bosses, as the truss head is not designed for high-torque applications. Follow applicable NEC or equipment manufacturer torque guidance where specified in the assembly documentation.