Mutual Screw & Supply

3/8-16 X 2-1/4" Hex Head Cap Screws | Grade 2 Steel Yellow Zinc | Partially Threaded (550 / Pkg.)

3/8-16 X 2-1/4" Hex Head Cap Screws | Grade 2 Steel Yellow Zinc | Partially - Main image
$76.21 $117.25 In stock

3/8-16 x 2-1/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 2 Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 550

Specifications

  • Thread Size: 3/8-16
  • Length: 2-1/4"
  • Threads Per Inch: 16
  • Material: Steel
  • Grade: Grade 2
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 550
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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)

Jason ★★★★★

I was tired of buying fully threaded bolts that wouldn't seat flush in my equipment, and these hex heads with the partial thread solved that perfectly. The yellow zinc coating looks clean and the 550 count is more than enough for multiple projects.

Kevin R. ★★★★★

The partial threading makes them sit perfectly flush when I'm bolting down steel brackets, and the yellow zinc finish hasn't shown a speck of rust after a month in a damp shop. At 550 per box, I'll be set for years of machine repairs.

Timothy R. ★★★★★

Bought these for a jig I was building and the yellow zinc finish is holding up nicely, no rust after a few humid days. The 3/8-16 threads caught cleanly on the first try with my socket, and the partial threading gave me the grip I needed without extra hardware.