Mutual Screw & Supply

3/8-16 X 5-1/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (50 / Pkg.)

3/8-16 X 5-1/4" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$43.78 $69.49 In stock

3/8-16 x 5-1/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 5 Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 50

Specifications

  • Thread Size: 3/8-16
  • Length: 5-1/4"
  • Threads Per Inch: 16
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • 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 (4.6 / 5 · 5 reviews)

Grace ★★★★★

The partial threading makes lining up the machine bracket way easier than fighting a fully threaded bolt. I’ve used a full bag on the assembly line and every one of them threaded clean with a socket, no stripped heads or duds in the bunch.

Michael X. ★★★★★

I needed some heavy-duty bolts for a shop press repair and these grade 5 hex heads handled the load without stripping—the yellow zinc coating is a nice bonus for rust resistance.

Violet C. ★★★★★

Used these to reattach a mower deck bracket that kept shaking loose, and the grade 5 steel with the yellow zinc held up perfectly against the vibrations. The partially threaded design made it easy to get the right bite without bottoming out.