Mutual Screw & Supply

3/8-16 X 8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (50 / Pkg.)

3/8-16 X 8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (50 / - Main image
$151.36 $213.19 In stock

3/8-16 x 8" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 8 Steel Yellow Zinc construction
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 50

Specifications

  • Thread Size: 3/8-16
  • Length: 8"
  • Threads Per Inch: 16
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+3
  • Pack Quantity: 50
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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 (4.4 / 5 · 5 reviews)

Nicholas Y. ★★★★★

I needed some long bolts for a heavy equipment repair, and these Grade 8s are plenty strong for the job. The yellow zinc coating looks even and should hold up well against rust.

Robert W. ★★★★★

Used a 1/2" wrench to drive these into a steel frame and they threaded perfectly with no binding. The Grade 8 steel feels reassuringly tough for a heavy machinery repair.

Riley E. ★★★★★

These bolts threaded perfectly into my tractor's frame without any binding, which was a relief after struggling with cheaper imported hardware. The hex head gave my socket a solid grip for torquing them down tight.