Value Collection 5040MSF 1/2-13 Flat Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 5040MSF is a 1/2-13 unified coarse thread machine screw with a flat head and slotted drive, manufactured from steel with a zinc finish. It measures 2.5 inches in overall length and is produced to ASME B18.6.3 and SAE J82 standards, ensuring dimensional consistency and mechanical reliability. The flat head seats flush with the mating surface when installed in a countersunk hole. This fastener is appropriate for general mechanical assembly, structural bracketing, and fabrication work across industrial, HVAC, plumbing, and electrical enclosure applications. Installation is performed by licensed trades and maintenance professionals using standard slotted drivers or bits.

This machine screw is suited for applications requiring a flush-mount fastener in countersunk steel, aluminum, or structural plastic components. Common use scenarios include panel assembly, equipment mounting brackets, and enclosure construction in commercial and light industrial settings. The 1/2-13 thread size is a standard coarse-thread designation widely used across mechanical and trade applications. No washer is included or required by the standard specification for this fastener style.

Key Features

• 1/2-13 unified coarse thread for broad compatibility with standard tapped holes
• Flat head profile seats flush in countersunk applications
• Slotted drive for use with standard flat-blade drivers or bits
• Steel construction with zinc finish for basic corrosion resistance
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• 2.5 inches overall length with no washer style designation

Compatibility

Designed as a standard 1/2-13 coarse-thread machine screw suitable for use in any application requiring an ASME B18.6.3-compliant flat head slotted fastener in that thread size and length.

Installation Notes

Installation requires a properly countersunk or counterbored mating hole to seat the flat head flush. Use a correctly sized flat-blade screwdriver or slotted bit to avoid cam-out and head damage. Verify that the tapped receiving hole meets 1/2-13 UNC thread specification before installation. Torque to the value specified by the assembly drawing or applicable mechanical standard for the joint material and fastener grade.