Mutual Screw & Supply

1-1/8-7 X 3-1/2" Heavy Hex Cap Screws | 316 Stainless Steel | Fully Threaded (2 / Pkg.)

1-1/8-7 X 3-1/2" Heavy Hex Cap Screws | 316 Stainless Steel | Fully Threaded (2 - Main image
$32.44 $47.71 In stock

316 Stainless Steel hex head cap screws, fully threaded, size 1-1/8-7 x 3-1/2". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • 316 Stainless Steel construction
  • fully threaded configuration
  • Hex head for wrench or socket drive
  • For machinery, equipment, and general-purpose fastening

Specifications

  • Thread Size: 1-1/8-7
  • Length: 3-1/2"
  • Threads Per Inch: 7
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 2
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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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Delivery costs

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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 (4.8 / 5 · 5 reviews)

John M. ★★★★★

Used these on a saltwater equipment trailer, and the 316 stainless steel is showing no signs of rust after a few weeks of rain and road grime. The threads cut smoothly into the pre-tapped holes without any binding.

Harper ★★★★★

Installed these on a marine railing last week and the 316 stainless is already proving itself against the salt spray. The fully threaded length made it easy to get a solid bite into the wood.

Christopher R. ★★★★★

The threading is clean and precise, so these cap screws seated perfectly without binding. I used them on a dock repair and the 316 stainless already feels more corrosion-resistant than the old 304s.