Mutual Screw & Supply

3/8-24 X 6-1/2" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (175 / Pkg.)

3/8-24 X 6-1/2" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc (175 - Main image
$381.6 $587.07 In stock

3/8-24 x 6-1/2" 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 175

Specifications

  • Thread Size: 3/8-24
  • Length: 6-1/2"
  • Threads Per Inch: 24
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+3
  • Pack Quantity: 175
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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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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 (4.2 / 5 · 5 reviews)

Samuel ★★★★★

Used these for rebuilding a piece of farm equipment, and the Grade 8 strength handled the torque without any issues. The hex head grabs nicely with a socket wrench, and the yellow zinc finish gives them a clean, corrosion-resistant look.

James ★★★★★

Packed a full 175 of them in one box, and every single head I've torqued so far has taken the socket cleanly without stripping. The Grade 8 yellow zinc finish is holding up better than the cheaper stuff I used to buy, and for mounting jigs on a heavy press table, these have been rock solid.

Sofia ★★★★★

These bolts threaded in way smoother than I expected for grade 8 steel, and the hex heads grabbed my socket perfectly without any stripping. Having 175 in a single package means I’ve got plenty left over for the next project—definitely worth it for the quality.