Mutual Screw & Supply

5/16"-18 Jam Nuts | 316 Stainless Steel (80 / Pkg.)

5/16"-18 Jam Nuts | 316 Stainless Steel (80 / Pkg.) - Main image
$7.4 $10 In stock

These 5/16"-18 jam nuts are manufactured from 316 Stainless Steel, featuring a hex head. They are well suited to threaded fastening with bolts and studs.

  • Material and finish: 316 Stainless Steel
  • Head style: Hex
  • Thread size: 5/16"-18
  • Applications: Threaded fastening with bolts and studs

Specifications

  • Product type: Jam Nuts
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Grade: 316
  • Head style: Hex
  • Thread size: 5/16"-18
  • Threads per inch: 18
  • Measurement type: Imperial
  • Pack quantity: 20 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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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)

Miles ★★★★★

Finally got around to mounting marine hardware on my transom, and these 316 jam nuts were the perfect choice—the hex head gives a solid grip for tightening against a vibrating outboard. The stainless finish looks clean and should handle the salt air well.

Abigail ★★★★★

I needed a corrosion-resistant fastener for a marine project, and these 316 stainless steel jam nuts are exactly what I was hoping for—they threaded onto the studs smoothly and feel solid. The hex head gives a good grip with the wrench, and the 80-count pack is plenty to finish the job.

James ★★★★★

The hex head on these jam nuts grabbed my wrench perfectly, and the 316 stainless finish feels reassuringly heavy-duty. I used them to secure a marine railing and they're holding tight without any corrosion worries.