Mutual Screw & Supply

1/4-28 X 5/8" Hex Head Cap Screws | Grade 8 Steel Yellow Zinc | Fully Threaded (3000 / Pkg.)

1/4-28 X 5/8" Hex Head Cap Screws | Grade 8 Steel Yellow Zinc | Fully Threaded - Main image
$145.53 $199.35 In stock

1/4-28 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
  • Sold in packs of 3000

Specifications

  • Thread Size: 1/4-28
  • Length: 5/8"
  • Threads Per Inch: 28
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+6
  • Thread Style: Fully Threaded
  • Pack Quantity: 3000
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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)

Zoe N. ★★★★★

If you're doing a big build, buying these by the box is the way to go. The 1/4-28 threads are clean and started into my die nuts without any fighting, and the yellow zinc finish looks consistent across all 3000 pieces. Took a while to receive them, but the grade 8 strength is exactly what I needed f

Thomas ★★★★★

The threads on these fully threaded screws cut cleanly into steel, and the Grade 8 strength gives me confidence they won’t strip under heavy torque. A solid choice for machine assembly.

Joseph W. ★★★★★

The hex heads on these screws fit my socket perfectly, and the yellow zinc finish looks clean and uniform across the entire box. I used about 200 of them for a tractor linkage repair and the threads cut smoothly with no galling.