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The VALUE COLLECTION MSPI0-400370-100BX is a 4-40 UNC machine screw supplied in a box of 100. It features a pan head profile with a slotted drive and is manufactured from Grade 2 steel with a zinc-plated finish for basic corrosion resistance. The screw measures 3/8 inches in length under the head and uses the standard inch measurement system. This fastener is used across light mechanical assemblies, electrical enclosures, panel work, and general-purpose equipment maintenance by electricians, HVAC technicians, and field service professionals.
This screw is suited for residential and commercial applications where a compact, low-profile pan head and simple slotted drive are required. The 4-40 thread size is common in small equipment housings, control panels, terminal blocks, and light-duty fastening tasks. The zinc plating provides a basic protective coating appropriate for indoor and sheltered installations. This box quantity of 100 pieces supports service kits, shop stock, and routine maintenance inventories.
Designed as a general-purpose 4-40 UNC machine screw suitable for light mechanical assemblies, electrical enclosures, and equipment panels requiring a pan head slotted fastener.
Install with a flat-blade screwdriver sized to the slotted head to avoid cam-out and head damage. De-energize any electrical enclosure or control panel before fastening or removing hardware in live equipment. Do not exceed the tensile load rating appropriate for Grade 2 steel at this thread size. Follow applicable NEC or equipment manufacturer guidelines when securing components inside electrical assemblies.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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