Mutual Screw & Supply

1/2-20 X 8" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

1/2-20 X 8" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | - Main image
$240.75 $334.38 In stock

1/2-20 x 8" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 25

Specifications

  • Thread Size: 1/2-20
  • Length: 8"
  • Threads Per Inch: 20
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 25
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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 (4.4 / 5 · 5 reviews)

George ★★★★★

Withdrew a stuck 5/8” bolt using these on a hydraulic puller, and the Grade L9 alloy didn’t even show a scratch. Threading went smooth in the nut, the yellow zinc coating has held up fine so far.

Isabella V. ★★★★★

I've been looking for a reliable 8-inch bolt that won't strip under heavy torque, and the partially threaded design on these L9 alloy steel screws gives me exactly that secure grip. The yellow zinc coating feels sturdy and hasn't shown any rust after a few weeks in my workshop.

Henry ★★★★★

Finally, some 8-inch hex cap screws that don't strip under heavy torque—the Grade L9 alloy steel feels rock-solid. The partial threading made it easy to snug up a bracket without fighting the threads.