Mutual Screw & Supply

1/4-20 X 3-1/2" Machine Screws | Truss Head Phillips Drive | 316 Stainless Steel (100 / Pkg.)

1/4-20 X 3-1/2" Machine Screws | Truss Head Phillips Drive | 316 Stainless - Main image
$47.3 $65.7 In stock

316 stainless steel machine screw with superior corrosion resistance, including salt-water and marine environments. Non-magnetic.

Specs

  • Dimensions: 1/4-20 3-1/2"
  • Drive type: Phillips
  • Head style: Truss Head
  • Material: 316 Stainless Steel
  • Thread: 1/4-20 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Truss head profile
  • Phillips drive
  • 316 Stainless Steel construction
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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

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Customer Reviews (5.0 / 5 · 5 reviews)

Isabella C. ★★★★★

Installed these on my boat's railing hardware three months ago and they still look brand new despite constant salt spray. The 316 stainless is truly non-magnetic and the truss head sits flush without snagging lines.

Steven G. ★★★★★

Used these to replace some rusted bolts on my boat trailer, and the 316 stainless is holding up perfectly in saltwater. The phillips drive made installation easy even in tight spots.

Steven M. ★★★★★

Installed these on a dock railing that gets sprayed constantly, and the non-magnetic 316 stainless is holding up beautifully with zero rust showing after a few weeks. The truss head sits flush enough that nothing snags, and the Phillips drive bit into them without any stripping issues.