Value Collection MSTI03102000-050BX Truss Head Machine Screw

Product Description

The VALUE COLLECTION MSTI03102000-050BX is a 5/16-18 x 2-inch truss head machine screw with a slotted drive, manufactured from Grade 2 steel and finished with a zinc plating for corrosion resistance. The truss head profile offers a wide, low-domed bearing surface that distributes clamping load across a broader area than a standard pan or round head. These screws are sold in a minimum order quantity of 50 pieces per box and are dimensioned under the Unified National Coarse (UNC) inch thread standard. Thread length is measured from under the head to the tip at 2 inches.

These screws are suited for general-purpose mechanical assembly in HVAC equipment panels, electrical enclosures, plumbing access covers, and light structural fabrication. The slotted drive accepts a flat-blade screwdriver, making them accessible in tight spaces where bit-drive tools may not fit. The zinc finish provides a baseline level of corrosion protection appropriate for indoor and light-duty sheltered applications. Truss head geometry makes these a practical choice when fastening thin sheet metal or plastic panels where pull-through resistance matters.

Key Features

• 5/16-18 UNC thread — coarse pitch for fast engagement in tapped holes and standard nuts
• Truss head profile provides a wide bearing surface to resist pull-through in thin materials
• Slotted drive allows use with a standard flat-blade screwdriver
• Grade 2 steel construction meets general-purpose mechanical strength requirements
• Zinc plating offers corrosion resistance for indoor and sheltered environments
• Sold in 50-piece box — sized for service truck stock and small-job quantities

Compatibility

Designed as a general-purpose UNC inch-thread machine screw compatible with any standard 5/16-18 tapped hole, hex nut, or coupling nut in that thread specification.

Installation Notes

Installation requires a flat-blade screwdriver or slotted bit driver sized for a 5/16-inch truss head fastener. Always verify the mating tapped hole or nut is clean and undamaged before driving to avoid cross-threading. Torque to the job specification for Grade 2 fasteners at this thread size as called out in the applicable equipment service manual or structural drawing. For use in outdoor or high-humidity environments, consider a higher-grade corrosion finish beyond standard zinc plate.