Value Collection 2-SFM-31C-200 Machine Screw 5/16-18x2

Product Description

The VALUE COLLECTION 2-SFM-31C-200 is a 5/16-18 x 2 inch flat head slotted machine screw manufactured from Grade 316 stainless steel with a bright, uncoated finish. It is a fully threaded fastener designed for applications where corrosion resistance and structural integrity are required. The flat head profile sits flush with or below the mating surface, making it well suited for assemblies where a low-profile or countersunk installation is necessary. Installers in plumbing, HVAC, electrical, and general mechanical trades reach for 316 stainless fasteners when working in wet, marine, or chemically exposed environments. This screw ships as a single unit and is driven with a standard flat-blade screwdriver.

This fastener is appropriate for use in residential and commercial mechanical assemblies, equipment enclosures, panel mounting, and structural connections where flush seating is required. The 5/16-18 UNC thread pitch and 2-inch length make it a common choice for mid-duty fastening tasks in corrosive or high-moisture environments. Grade 316 stainless steel provides improved chloride resistance compared to Grade 304, making this screw a preferred option for coastal installations, pool equipment enclosures, and wet mechanical rooms.

Key Features

• Grade 316 stainless steel construction for superior corrosion and chloride resistance
• 5/16-18 UNC thread size with 2-inch length under head
• Flat head profile allows flush or countersunk installation
• Slotted drive compatible with standard flat-blade screwdrivers
• Bright, uncoated finish maintains dimensional accuracy for tight-tolerance fits
• Inch measurement system; sold individually

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies requiring a 5/16-18 UNC flat head slotted machine screw in Grade 316 stainless steel.

Installation Notes

This fastener is installed by general mechanics, plumbers, HVAC technicians, and electricians using a flat-blade screwdriver or slotted bit driver. Always de-energize and lock out equipment before accessing panels or enclosures for fastener replacement. When installing into tapped holes, ensure thread engagement of at least 1.5 times the screw diameter to maintain rated holding strength. Apply anti-seize compound when fastening stainless-to-stainless interfaces to prevent galling.