Mutual Screw & Supply

1/2-20 X 1-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Fully Threaded (50 / Pkg.)

1/2-20 X 1-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$106.16 $147.45 In stock

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

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 50

Specifications

  • Thread Size: 1/2-20
  • Length: 1-1/2"
  • Threads Per Inch: 20
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully 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 (5.0 / 5 · 5 reviews)

Richard ★★★★★

I needed fully threaded bolts for a heavy machinery repair, and these Grade L9 hex heads torqued down perfectly without any stripping. The 50-count package gave me spares for future projects too.

Sophia ★★★★★

The yellow zinc finish is a nice touch — they look clean and don't show handling marks after a full day of wrenching on the assembly line. Threads cut perfectly into the tapped holes with zero binding, and the L9 alloy feels plenty stout for heavy equipment frames.

Sebastian ★★★★★

Used these to secure a heavy bracket on a press table – the yellow zinc finish held up perfectly against oil and grime. Threads were sharp and clean, let me run them in by hand before torquing. Exactly what you want from L9 bolts.