Mutual Screw & Supply

1/2-20 X 4-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

1/2-20 X 4-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$141.86 $197.03 In stock

1/2-20 x 4-1/2" 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: 4-1/2"
  • 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 · United States: $0.00

Express Shipping · United States: $3.99

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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)

Kevin ★★★★★

The zinc coating on these is evenly applied and looks great, no flaking like on cheaper hardware. Used them to mount a heavy pump and the partial threading made alignment much easier. Definitely worth the price for the grade L9 strength.

Owen ★★★★★

These bolts are exactly the right length for the heavy equipment frame I'm working on, and the partially threaded section grabs perfectly for a clean, solid clamp. The hex heads are sharp and the yellow zinc gives them a tough, professional look. They'll definitely be my go-to for this kind of job.

Alexander ★★★★★

These bolts threaded perfectly into my tractor’s frame with no binding, and the yellow zinc coating looks like it'll hold up well against the weather. The L9 alloy steel feels noticeably tougher than the standard hardware I usually buy.