Mutual Screw & Supply

3/8-16 X 5/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | Fully Threaded (200 / Pkg.)

3/8-16 X 5/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | - Main image
$44.43 $65.34 In stock

3/8-16 x 5/8" 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: 3/8-16
  • Length: 5/8"
  • Threads Per Inch: 16
  • 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 (5.0 / 5 · 5 reviews)

Leo ★★★★★

The yellow zinc finish on these Grade 8 bolts is flawless, and every thread is clean and sharp—no burs or duds in the pack. Used them to rebuild a tractor hitch bracket, and they torqued down perfectly with a socket wrench. Very solid fasteners for the price.

Natalie O. ★★★★★

Took a few minutes to confirm the grade 8 stamp and zinc coating are legit under a bright light, and these are solidly built for the price. The fully threaded body made alignment a breeze when I bolted down a steel bracket this morning.

Lucy ★★★★★

The hex heads on these cap screws sat perfectly flush in my socket wrench without any wobble, and the yellow zinc coating looks like it will outlast the equipment itself. Grabbed a pack for rebuilding a press jig and every single one threaded smoothly.