Value Collection VT3215PS 1/4-20 X 1/2 in Flat Head Slotted Screw

Product Description

The VALUE COLLECTION VT3215PS is a 1/4-20 flat head slotted machine screw with a 1/2-inch overall length, manufactured from Grade 316 stainless steel with a bright, uncoated finish. Grade 316 stainless offers superior corrosion resistance compared to Grade 304, making it a preferred choice in marine, chemical, and outdoor environments where moisture or salt exposure is a factor. The UNC (Unified National Coarse) thread form provides reliable engagement in standard threaded holes and inserts. This screw is sized and threaded for general fastening tasks across HVAC, plumbing, electrical, and light structural applications where stainless hardware is specified.

This machine screw is suited for use in residential and commercial settings where corrosion-resistant fasteners are required. Typical applications include panel assembly, equipment mounting, junction box fabrication, and any installation where exposure to moisture, humidity, or mild chemical contact is expected. The flat head profile seats flush with or below the surface of the mating material, making it appropriate for applications where a low-profile finish is needed.

Key Features

• Grade 316 stainless steel construction for strong corrosion resistance in wet or chemically exposed environments
• 1/4-20 UNC thread for compatibility with standard coarse-thread tapped holes and inserts
• Flat head design allows flush or countersunk seating in the mating surface
• Slotted drive accepts standard flat-blade screwdrivers
• Bright, uncoated finish — no plating to crack, chip, or interfere with conductivity
• Overall length of 1/2 inch with full thread length under head of 1/2 inch

Compatibility

Designed for use in standard 1/4-20 UNC tapped holes. Suitable for general-purpose fastening in HVAC, plumbing, electrical enclosure, and equipment assembly applications where a flat head stainless machine screw is specified.

Installation Notes

Installation is performed with a flat-blade screwdriver sized to match the slotted drive. When countersinking into metal panels or enclosures, ensure the countersink angle matches the screw head geometry to achieve a flush seat. Do not over-torque stainless fasteners, as the material is susceptible to galling when threads are driven under excessive force; applying a thread lubricant or anti-seize compound rated for stainless is common practice. Power down or de-energize any equipment before fastening near live electrical components.