Value Collection 0312MSR 3-48 Round Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 0312MSR is a 3-48 unified fine-thread machine screw built for general-purpose fastening in light metalwork, electrical enclosures, and instrument assembly. The round head profile sits above the mating surface and distributes clamp load evenly, while the slotted drive allows installation with a standard flat-blade screwdriver. Finished in zinc for basic corrosion resistance, this screw is manufactured from steel to Grade J82 and conforms to ASME B18.6.3 and SAE J82 dimensional standards. The length under head measures 0.75 inches. Sold in a minimum quantity of 100 per order.

This screw is suited for residential and light commercial applications where a small-diameter, fine-pitch fastener is required. Common uses include securing terminal blocks, control panel components, small electrical fixtures, and sheet metal assemblies. The 3-48 thread designation indicates a number 3 diameter with 48 threads per inch, making it appropriate for thin material or precision hardware where a coarser thread would not engage cleanly. Installers working in HVAC controls, electrical panels, and instrumentation will encounter this size frequently when servicing OEM assemblies.

Key Features

• 3-48 unified fine thread for reliable engagement in thin or precision materials
• Round head profile provides a low-profile, finished appearance above the work surface
• Slotted drive compatible with standard flat-blade screwdrivers
• Zinc finish provides basic corrosion resistance for indoor and light-duty environments
• Meets ASME B18.6.3 and SAE J82 dimensional standards for consistent fitment
• Steel construction with Grade J82 material designation

Compatibility

Designed as a standard 3-48 machine screw suitable for use in any application requiring ASME B18.6.3 compliant slotted round head fasteners with a 0.75 inch length under head in the inch measurement system.

Installation Notes

Install with a flat-blade screwdriver sized to the slot width to avoid cam-out and head damage. Ensure the mating hole is tapped or threaded to the 3-48 specification before driving the fastener. De-energize any electrical equipment before fastening hardware within control enclosures or panel assemblies, in accordance with applicable NEC lockout and tag-out procedures. Do not overtighten small-diameter screws, as steel fasteners at this size can shear if torque is excessive.