Mutual Screw & Supply

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

3/8-16 X 1-3/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | - Main image
$42.33 $69.4 In stock

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

  • Grade 8 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: 1-3/8"
  • Threads Per Inch: 16
  • Material: Steel
  • Grade: Grade 8
  • 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)

Sebastian C. ★★★★★

I needed a few dozen for a heavy equipment repair and these Grade 8 bolts handled the torque without stripping. The fully threaded shaft made alignment a breeze, and the yellow zinc coating looks clean.

Carter ★★★★★

Used these for a quick machine jig build and the threads seated perfectly in tapped holes without any binding. The yellow zinc finish looks consistent across all 100 pieces, which I appreciate for a fastener order.

Nicholas ★★★★★

Threads are clean and the Grade 8 yellow zinc finish is holding up well after a week of use on my trailer hitch. I’ve already used about 40 of them and they drive in without any stripping issues.