Value Collection -92599-4 Flat Head Machine Screw 5/16-18

Product Description

The VALUE COLLECTION -92599-4 is a flat head slotted machine screw designed for general fastening applications in metal, wood, and composite assemblies. It features a 5/16-18 UNC thread and an overall length of 1.5 inches. Constructed from grade 18-8 stainless steel with a bright, uncoated finish, it provides solid corrosion resistance in environments where mild moisture exposure is a concern. The flat head profile sits flush with or below the mating surface when countersunk, keeping the assembly clean and snag-free. Machinists, maintenance technicians, and field service pros use this fastener in equipment panels, enclosures, and structural brackets.

This screw suits a wide range of light-to-medium duty fastening tasks in residential, commercial, and light industrial settings. The 5/16-18 UNC coarse thread engages quickly and holds reliably in tapped holes or with a standard hex nut. The slotted drive accepts a flat-blade screwdriver, making it accessible when Phillips or hex tools are not on hand. Typical applications include panel assembly, equipment mounting, and general-purpose mechanical fastening where a flush-seating head is required.

Key Features

• 5/16-18 UNC coarse thread for fast engagement and broad tool compatibility
• Flat head profile countersinks flush for clean, snag-free assemblies
• Grade 18-8 stainless steel construction for corrosion resistance
• Bright, uncoated finish — no coating to crack, flake, or add dimensional variance
• Slotted drive accepts standard flat-blade screwdrivers
• Sold without washer — direct replacement or new-installation use

Compatibility

Designed as a general-purpose UNC machine screw compatible with any standard 5/16-18 tapped hole or hex nut application requiring a flat head, flush-mount fastener in inch-system assemblies.

Installation Notes

Installation requires a properly sized flat-blade screwdriver or slotted bit matched to the head recess. For flush seating, the mating surface should be countersunk to the correct angle before driving. Avoid overtorquing stainless steel fasteners, as galling of the threads can occur — applying an anti-gall lubricant to the threads before installation is standard practice. Ensure the tapped hole or nut is clean and free of debris before assembly.