#6 316 Stainless Sheet Metal Screw
316ss marine grade screws
Marine Grade Stainless Steel Screws
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#6 - 316 Stainless Fully Threaded Screws

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Our solid 316 Stainless Steel (A4) fully threaded screws aren't just for metal as their technical term of "sheet metal screws" implies and can be used in a variety of materials for strong, corrosion resistant holding power. 

#6 Screw Measurements:

Diameter Inside the Threads Diameter Outside the Threads Head Diameter
0.103" (2.6mm) 0.140" (3.6mm) 0.250" (6.4mm)

Phillips Head Self-Tapping Sheet Metal Screws

316ss self-tapping sheet metal screws are ideal for jobs that will be exposed to corrosive marine environments such as saltwater, and are great for fastening much more than just sheet metal. 

Benefits of our marine grade 316 stainless sheet metal screws include:

  • Highly Corrosion Resistant: When working in a marine environment, corrosion is a major concern. Where 18-8 or 304 stainless steel sheet metal screws that are available from the big box stores will start weeping rust within days of being exposed to saltwater, our 316l sheet metal screws will stay corrosion free for much longer.
  • Exceptional holding power: Being fully threaded allows for more threads to engage with the wood, metal, plastic, fiberglass, or other substrate that you are fastening to. 
  • Available in Flat, Round, or Pan Heads: Whether you need a countersunk (CSK) flat or oval headed screw, or a pan head screw for just the right finishing touch, we carry them in a variety of lengths and diameters.

The Difference Between Sheet Metal Screws and Wood Screws

Both of screw can be used in wood, metal, plastics, fiberglass, and more despite their names. The main difference is that sheet metal screws are fully threaded, as opposed to a wood screw which is partially threaded, about 2/3 of the way up the shank. Wood screws are partially threaded in order to draw two pieces of material together when the screw is tightened, as opposed to sheet metal screws which are not meant to draw materials together.

Sheet metal screws work well on boats for fastening hardware such as cleats, chocks, cleats, hawsepipes, rub rails, stanchions, hinges, and more. If fastening stainless steel hardware to either a fiberglass or wood boat they provide extra holding power over a wood screw due to the fact that they are fully threaded.

Our 316l stainless steel sheet metal screws are an excellent choice for marine fastener applications, due to the 316 alloy being highly corrosion resistant. 

Customer Reviews

Based on 4 reviews
Larry Berger

Great website, quick ship and delivery!

Brook Moore
5 Stars!

Wonderful resource for boaters - 316 stainless hardware at great prices. Handling and shipping was very quick. I will look here first.

Outstanding service and products

Prompt delivery. Even though mine was a small order with many different screw sizes. Each one was carefully packaged and carefully labeled it was truly unexpected but appreciated.

Steve Kraft

The hard to find bronze screws were perfect. The quality has always been superior. Thank you for another great order.