Value Collection 586081PR 5-40x1 Flat Head Phillips Machine Screw

Product Description

The VALUE COLLECTION 586081PR is a 5-40 x 1 inch flat head machine screw with Phillips drive, manufactured from steel with a zinc finish. This fastener meets ASME B18.6.3 and SAE J82 standards, making it a reliable choice for precision mechanical assemblies. The flat head profile seats flush with the mating surface when installed in a countersunk hole, which is standard for many enclosures, panels, and equipment housings. The zinc finish provides basic corrosion resistance for indoor and light-duty applications. Installation requires a Phillips screwdriver or bit matched to the No. 2 recess size typical for this thread diameter.

This screw is suited for light mechanical assemblies, electronics enclosures, instrument housings, and general-purpose fastening applications where a flush-mount fastener is required. The 5-40 thread designation indicates a No. 5 diameter with 40 threads per inch, a fine-pitch unified national coarse thread commonly used in precision equipment, electrical panels, and small appliance assemblies. Sold in multiples of 100 per order.

Key Features

• 5-40 thread size, 40 threads per inch for secure engagement in precision-tapped holes
• 1 inch overall length, measured from tip to top of head
• Flat head profile for flush or countersunk installations
• Phillips drive for use with standard Phillips bits and screwdrivers
• Steel construction with zinc finish for basic corrosion resistance
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards

Compatibility

Designed as a standard inch-series machine screw for use in any application requiring a 5-40 threaded flat head fastener per ASME B18.6.3.

Installation Notes

Installation is performed with a Phillips-tip screwdriver or power driver fitted with the correct bit size. A properly countersunk or pre-tapped mating hole is required for flush seating of the flat head. Do not over-torque small-diameter machine screws, as thread stripping in tapped aluminum or plastic holes is a common failure mode. Ensure thread engagement depth meets the requirements of the assembly design.