Value Collection 0416MSR 4-40 X 1 in Round Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 0416MSR is a 4-40 unified coarse thread machine screw designed for precision fastening in light-duty mechanical assemblies. Manufactured from steel with a zinc finish, this screw features a round head profile and slotted drive, making it compatible with standard flat-blade screwdrivers. The 1-inch length is measured under the head per ASME B18.6.3 and SAE J82 standards. Grade J82 construction ensures consistent dimensional tolerances and mechanical properties suitable for general industrial, electrical, and instrumentation applications where a small-diameter threaded fastener is required.

This screw is suited for use in control panels, electrical enclosures, instrument housings, light-duty brackets, and similar assemblies where a 4-40 threaded hole or nut is present. The zinc finish provides basic corrosion resistance in dry indoor environments. Electricians, HVAC technicians, and mechanical assemblers commonly use 4-40 slotted round-head screws when securing terminal strips, small covers, and lightweight components to sheet metal or threaded standoffs.

Key Features

• 4-40 unified coarse thread for reliable engagement in standard 4-40 tapped holes and nuts
• Round head profile with slotted drive for use with standard flat-blade screwdrivers
• 1-inch length under head per ASME B18.6.3 and SAE J82 dimensional standards
• Steel construction with zinc finish for basic indoor corrosion resistance
• Grade J82 material designation ensures consistent dimensional and mechanical tolerances
• Sold in multiples of 100 units minimum order quantity

Compatibility

Designed as a standard 4-40 UNC machine screw suitable for any application requiring a round-head slotted fastener conforming to ASME B18.6.3 and SAE J82 specifications.

Installation Notes

Install using a flat-blade screwdriver sized to fit the slotted head to avoid cam-out and head damage. Ensure the mating thread is clean and properly tapped to 4-40 UNC before installation. Do not overtighten small-diameter screws, as stripping is common when excessive torque is applied. Power down any electrical enclosure or panel before inserting or removing fasteners inside live equipment.