Mutual Screw & Supply

5/16-18 X 4" Machine Screws | Truss Head Phillips Drive | 18/8 Stainless Steel (100 / Pkg.)

5/16-18 X 4" Machine Screws | Truss Head Phillips Drive | 18/8 Stainless Steel - Main image
$58.41 $81.12 In stock

18/8 (304) stainless steel machine screw offering strong corrosion resistance for indoor, outdoor, and washdown environments. Non-magnetic.

Specs

  • Dimensions: 5/16-18 4"
  • Drive type: Phillips
  • Head style: Truss Head
  • Material: 18/8 Stainless Steel
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Truss head profile
  • Phillips drive
  • 18/8 Stainless Steel construction
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Miles ★★★★★

These fit perfectly on my boat trailer where I needed non-magnetic hardware that wouldn't rust near saltwater. The truss head gives a nice low profile and the threading was clean all the way along.

Steven ★★★★★

Had to swap out some rusted bolts on my boat trailer, and these stainless steel screws held up perfectly after a week in saltwater. The truss head sits flush without catching on anything, and the Phillips drive bit into place without slipping. Exactly what I needed for a corrosion-proof fix.

Sebastian ★★★★★

Used a few of these to secure a heavy gate latch outdoors. The 4-inch length gave plenty of bite, and the stainless heads haven't shown a speck of rust after two weeks of rain. Exactly what I needed.