Mutual Screw & Supply

3/8-16 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (300 / Pkg.)

3/8-16 X 5-1/2" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$881 $1468.33 In stock

3/8-16 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 300

Specifications

  • Thread Size: 3/8-16
  • Length: 5-1/2"
  • Threads Per Inch: 16
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 300
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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 (4.8 / 5 · 5 reviews)

Violet ★★★★★

The yellow zinc coating is holding up great on these, no rust after a few weeks in a damp shop. The hex heads grab a wrench cleanly every time, and with 300 in the box I’ve got plenty for the rest of the job.

Samuel B. ★★★★★

The partially threaded design makes these perfect for my jig builds, and the hex heads hold up well under a socket. Pack of 300 gives me plenty for the shop without breaking the bank.

Sofia M. ★★★★★

The plating on these is a nice, even yellow zinc that feels like it'll hold up on the shop floor. Threads cut clean on both the machine side and the nut, and that partial thread gave me the grip I needed for a heavy bracket.