Mutual Screw & Supply

1/2-13 X 3-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

1/2-13 X 3-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$82.15 $128.36 In stock

1/2-13 x 3-1/2" 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: 1/2-13
  • Length: 3-1/2"
  • Threads Per Inch: 13
  • 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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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 (4.2 / 5 · 5 reviews)

John O. ★★★★★

The partially threaded design made these screws easy to start by hand before torquing them down with a socket. The yellow zinc finish on the Grade L9 steel looks clean and hasn't shown any rust after a few weeks in my shop.

Nicholas O. ★★★★★

These bolts held up perfectly when I torqued them down on my press, and the yellow zinc coating still looks brand new after a week of oily shop use. The partial threading made alignment much easier than dealing with a fully threaded rod.

Benjamin Z. ★★★★☆

The partially threaded design made these easier to start by hand than fully threaded bolts. They tightened up nicely with a socket and feel solid in heavy steel brackets. Only thing is the yellow zinc is slightly more matte than I expected.