Mutual Screw & Supply

5/16-18 X 1-3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (100 / Pkg.)

5/16-18 X 1-3/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$76.16 $113.67 In stock

5/16-18 x 1-3/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 100

Specifications

  • Thread Size: 5/16-18
  • Length: 1-3/4"
  • Threads Per Inch: 18
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 100
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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)

Natalie S. ★★★★★

Bought these for a farm implement repair and the hex head seated perfectly with a standard socket, no stripping. The yellow zinc coating looks tough and should hold up well in damp conditions.

Harper A. ★★★★★

The threads caught perfectly on my tractor’s loader mount, and the yellow zinc coating looks like it’ll hold up fine outdoors. These bolts feel noticeably tougher than the hardware store stuff I’ve used before.

Sofia Y. ★★★★★

Used these to bolt down a steel workbench frame and the hex heads grabbed a socket perfectly, no stripping even with a impact driver. The yellow zinc finish held up fine against some light oil splashes, and having a full 100 in the box meant I didn't have to run to the store halfway through the job.