Mutual Screw & Supply

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

5/16-18 X 7/8" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Fully Threaded - Main image
$26.42 $42.62 In stock

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

  • Grade 5 Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 200

Specifications

  • Thread Size: 5/16-18
  • Length: 7/8"
  • Threads Per Inch: 18
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • 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)

Julian K. ★★★★★

I needed a batch of quality hex head cap screws for a machinery repair and these worked perfectly. The yellow zinc coating looks consistent and the hex heads grab the socket drive cleanly without slipping. They seated smoothly in the pre-tapped holes with no binding.

Matthew ★★★★★

The threads are consistently cut and the yellow zinc coating looks uniform across all 200 pieces. I used these for a tractor attachment repair and every single one threaded smoothly without any binding or stripping.

Matthew ★★★★★

The hex heads seated cleanly in my socket wrench and the yellow zinc finish looks uniform across all 200 pieces, which is exactly what I wanted for a batch of equipment repairs. The grade 5 steel feels solid, and the fully threaded shanks let me cinch down tight without any worry about stripping.