These neoprene washer screws are designed for use in metal building applications when moisture needs to be sealed out. Neoprene washer provides an effective waterproof seal. Great for metal tool sheds, metal siding, and metal roofing. Self piercing screws require no pre-drilling.

This clear plastic box contains 40 screws and washers- size 10 x 1 / M4.8 x 25.4

* Washers Are Bonded With Neoprene To Be Water Proof And Corrosion Resistant

* Great For Most Any Sheet Metal Application- No Pre Drilling Is Required

* Red Top And Washer To Match The Color Of The Sheet Metal- Hex Shaped Heads

* Use For Metal Roofs, Garage Door, Garden Shed, Metal Siding