Mutual Screw & Supply

1/2-13 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (100 / Pkg.)

1/2-13 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$497.48 $700.67 In stock

1/2-13 x 5-1/2" 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 100

Specifications

  • Thread Size: 1/2-13
  • Length: 5-1/2"
  • Threads Per Inch: 13
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 100
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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)

Hazel ★★★★★

The yellow zinc coating on these bolts resisted my grimy shop hands better than any black oxide fastener ever has. They threaded smoothly into my equipment base and held solid once torqued. For a hundred-pack of USA-made Grade L9, this is a no-brainer.

George T. ★★★★★

I was able to torque these down to spec without any stripping or deformation, which is exactly what I needed for a heavy equipment frame repair. The partial threading made alignment in tight spots much simpler than a fully threaded bolt would have.

Adam S. ★★★★★

The yellow zinc finish on these L9 bolts looks quality, and the partially threaded design made aligning them in that tight engine mount spot way easier. They torqued down solid with no hint of stripping.