Mutual Screw & Supply

1/4-28 X 1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Fully Threaded (100 / Pkg.)

1/4-28 X 1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc - Main image
$21.45 $35.17 In stock

1/4-28 x 1/2" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 100

Specifications

  • Thread Size: 1/4-28
  • Length: 1/2"
  • Threads Per Inch: 28
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully Threaded
  • Pack Quantity: 100
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When it ships

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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 (4.8 / 5 · 5 reviews)

Olivia F. ★★★★★

Installed these on a jig fixture at work and they tightened down perfectly with no wobble. The yellow zinc coating looks consistent across all 100 pieces, which I appreciate for corrosion resistance.

Julian U. ★★★★★

On my torque wrench socket, these L9 steel screws seated cleanly and didn't strip the hex head—each one in the pack was fully threaded and consistent in length.

Charlotte ★★★★★

Got these for a fixture rebuild at the shop and the hex heads drive perfectly with a socket. The yellow zinc finish looks consistent across all 100 pieces, no duds.