Value Collection 0414MSL 4-40 X 7/8 in Fillister Slotted Machine Screw

Product Description

The VALUE COLLECTION 0414MSL is a 4-40 UNC machine screw with a fillister head and slotted drive, manufactured from steel with a zinc finish. Measuring 7/8 inches in length under the head, this fastener conforms to ASME B18.6.3 and SAE J82 standards, making it a reliable choice for precision assembly work where consistent thread engagement and head geometry are required. The fillister head offers a taller profile and smaller diameter than a pan head, giving it added grip depth for slotted drivers in confined clearances. Trade professionals and maintenance technicians rely on this screw type for light-duty mechanical assemblies, electrical enclosure hardware, and instrumentation panel work.

This fastener is suited for applications requiring a fine 4-40 thread pitch in steel construction, including control panel assembly, electrical equipment mounting, and light-gauge sheet metal or plastic fastening. The zinc finish provides a basic level of corrosion resistance appropriate for indoor and sheltered environments. Sold in a minimum order quantity of 100 pieces per order, this screw is stocked for use in production, repair, and MRO settings where small-diameter machine screws are consumed in volume.

Key Features

• 4-40 UNC thread size for standard fine-pitch mechanical assembly
• Fillister head profile provides deep slotted drive recess for positive driver engagement
• 7/8 inch length measured under the head per ASME B18.6.3 convention
• Steel construction with zinc finish for basic corrosion protection in indoor environments
• Conforms to ASME B18.6.3 and SAE J82 fastener standards
• No washer — clean bearing surface for direct substrate contact

Compatibility

Designed as a standard 4-40 UNC machine screw suitable for use in any application calling for a 4-40 fillister head slotted fastener per ASME B18.6.3 and SAE J82 specifications.

Installation Notes

Install using a standard flat-blade screwdriver sized to the slotted recess to avoid cam-out and head damage. Ensure the mating tapped hole or threaded insert is clean and properly sized for 4-40 UNC threads before driving. Do not overtorque — small-diameter machine screws are susceptible to thread stripping and head shear. For electrical or control panel assemblies, follow applicable NEC guidelines for hardware used in enclosure construction.