Mutual Screw & Supply

3/8-16 X 1-1/8" Hex Head Cap Screws | Grade 8 Steel Yellow Zinc | Fully Threaded (800 / Pkg.)

3/8-16 X 1-1/8" Hex Head Cap Screws | Grade 8 Steel Yellow Zinc | Fully - Main image
$106.63 $154.53 In stock

3/8-16 x 1-1/8" 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
  • Sold in packs of 800

Specifications

  • Thread Size: 3/8-16
  • Length: 1-1/8"
  • Threads Per Inch: 16
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+6
  • Thread Style: Fully Threaded
  • Pack Quantity: 800
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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 (5.0 / 5 · 5 reviews)

William T. ★★★★★

Needed a batch of fully threaded 3/8-16 hex heads for a machinery repair, and the Grade 8 strength handled the torque perfectly. The yellow zinc finish looks consistent across all 800 pieces.

Samuel M. ★★★★★

The yellow zinc coating is even and clean across all 800 pieces, and the threads engage smoothly without any binding. I’ve used maybe 60 so far on a jig build and every single one seated flush with a socket wrench.

Ava ★★★★★

These are perfect for when you need a high-strength fastener that won't strip out under heavy torque. I used them to assemble some equipment and the Grade 8 rating gave me peace of mind. The 800 count will last me a long time.