Mutual Screw & Supply

1/4-20 X 3-1/2" Carriage Bolts | Steel Zinc Plated (100 / Pkg.)

1/4-20 X 3-1/2" Carriage Bolts | Steel Zinc Plated (100 / Pkg.) - Main image
$20.53 $31.11 In stock

These 1/4-20 x 3-1/2" carriage bolts are manufactured from Steel with a zinc plated finish. They are well suited to structural and machinery fastening.

  • Material and finish: Steel, Zinc Plated finish
  • Thread size: 1/4-20
  • Length: 3-1/2"
  • Applications: Structural and machinery fastening

Specifications

  • Product type: Carriage Bolts
  • Material: Steel
  • Finish: Zinc Plated
  • Thread size: 1/4-20
  • Length: 3-1/2"
  • Threads per inch: 20
  • Measurement type: Imperial
  • Pack quantity: 100 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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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 (4.8 / 5 · 5 reviews)

Robert F. ★★★★★

I needed to fasten a heavy wooden bench to a concrete floor, and these 1/4-20 x 3-1/2" carriage bolts held tight with no stripping. The zinc coating looks clean and should resist rust.

Scarlett S. ★★★★★

The square shoulder on these bolts really digs in and prevents spinning as I tighten the nut, which is a lifesaver when working alone. Full length threads let me adjust the depth precisely for my structural framing project.

John Y. ★★★★★

The square neck grabbed the wood perfectly on my deck repair, no spinning or cursing like with regular bolts. Zinc plating looks clean and uniform across all 100 pieces, and the 3-1/2" length gave me plenty of bite through the 2x6s.