Mutual Screw & Supply

5/16-18 X 7/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | Fully Threaded (200 / Pkg.)

5/16-18 X 7/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | - Main image
$31.56 $52.6 In stock

5/16-18 x 7/8" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 8 Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 200

Specifications

  • Thread Size: 5/16-18
  • Length: 7/8"
  • Threads Per Inch: 18
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully Threaded
  • Pack Quantity: 200
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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 (4.6 / 5 · 5 reviews)

Michael ★★★★★

Used these to bolt down a jig on my drill press and the fully threaded length made alignment a breeze. The yellow zinc coating feels tough and the threads cut clean without any binding. Solid buy for the price.

Madison M. ★★★★★

Used these to rebuild a jig table at work and the fully threaded shafts grabbed perfectly in the tapped holes. The yellow zinc coating is brighter than I expected, but it's held up fine with no rust after a few weeks of shop use. Solid buy for the money, these won't strip or snap like cheaper ones I

Emily ★★★★★

These bolts threaded smoothly into my tractor's mounting brackets without any binding. The yellow zinc finish looks durable and the Grade 8 steel gives me confidence they'll hold up under heavy use.