Mutual Screw & Supply

1/2-13 X 3" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (50 / Pkg.)

1/2-13 X 3" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | - Main image
$157.81 $225.44 In stock

1/2-13 x 3" 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 50

Specifications

  • Thread Size: 1/2-13
  • Length: 3"
  • Threads Per Inch: 13
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 50
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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)

Joseph ★★★★★

Driving these into a heavy steel bracket was noticeably easier than with lesser bolts—the L9 alloy holds the threads cleanly without galling. The yellow zinc finish looks solid and the partial threading gives just the right grip depth for my jig fixture.

Aurora ★★★★★

These are the first L9s I've bought for heavy equipment repairs, and the yellow zinc finish has held up way better than plain steel under grime. The partial threads make alignment on the flange much easier, and all 50 in the package came out of the box with clean, square shoulders.

Robert ★★★★★

The hex head grips my impact socket perfectly, no wobbling at all. These Grade L9 bolts feel extremely solid for heavy-duty equipment assembly, and the yellow zinc coating looks clean and professional.