Mutual Screw & Supply

3/8-16 X 1-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Fully Threaded (100 / Pkg.)

3/8-16 X 1-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$83.61 $114.54 In stock

3/8-16 x 1-1/4" 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 100

Specifications

  • Thread Size: 3/8-16
  • Length: 1-1/4"
  • Threads Per Inch: 16
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully 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 (4.6 / 5 · 5 reviews)

Sofia X. ★★★★★

Put these on a heavy-duty mower deck and they held tight even under constant vibration. The hex heads engaged perfectly with my socket, no stripping at all during installation.

Hazel P. ★★★★★

The yellow zinc coating looks great and feels durable, and these fully threaded screws seated perfectly in my equipment frame. They drove in smoothly with a socket wrench, and the Grade L9 alloy steel gives me confidence in the hold.

Eva ★★★★★

I've been using these on a machine rebuild and the yellow zinc coating is holding up better than some cheaper screws I've tried. The Grade L9 steel feels solid under torque, and having a full hundred in the pack saved me a trip to the hardware store.