Mutual Screw & Supply

1/4-20 X 3/8" Hex Machine Bolts | Steel Zinc Plated | Fully Threaded (200 / Pkg.)

1/4-20 X 3/8" Hex Machine Bolts | Steel Zinc Plated | Fully Threaded (200 / - Main image
$4.17 $6.23 In stock

1/4-20 X 3/8" Hex Machine Bolts in Steel Zinc Plated. A fully threaded hex head machine bolt for use where thread engagement is needed along the entire shank, in metal, wood, and assembled components.

  • Fully threaded for full-length engagement
  • Hex head for wrench-driven, high-torque installation
  • Zinc plating for everyday corrosion resistance

Specifications

  • Type: Hex Machine Bolts
  • Head Style: Hex
  • Material: Steel
  • Finish: Zinc Plated
  • Thread Size: 1/4-20
  • Length: 3/8"
  • Thread: Fully Threaded
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Zoe ★★★★★

Used these for a jig I was building and the fully threaded shank let me tighten everything down without worrying about bare spots. The zinc coating seems solid and none of the 200 bolts had any burrs or defects.

Chloe ★★★★★

I was worried the 3/8" length might be too short for my project, but these bolts grabbed perfectly in the threaded holes. The fully threaded shank made alignment easy even in tight spots, and the zinc coating has a clean, uniform look.

Julian S. ★★★★★

Finally, a pack of bolts where the threads actually go all the way to the head like they should. These 1/4-20 x 3/8" hex machine bolts made quick work of assembling a small metal bracket, and the zinc coating gives them a clean, uniform look.