Mutual Screw & Supply

5/16-18 X 1-1/2" Hex Machine Bolts | Brass | Partially Threaded (70 / Pkg.)

5/16-18 X 1-1/2" Hex Machine Bolts | Brass | Partially Threaded (70 / Pkg.) - Main image
$7.5 $10 In stock

5/16-18 X 1-1/2" Hex Machine Bolts in Brass. A hex head machine bolt with a partially threaded shank per ASME B18.2.1, providing an unthreaded grip length for bolted connections through clearance holes.

  • Partially threaded shank for a smooth bearing surface in the shear plane of bolted joints
  • Hex head for wrench-driven, high-torque installation
  • Brass construction for natural corrosion resistance

Specifications

  • Type: Hex Machine Bolts
  • Head Style: Hex
  • Material: Brass
  • Finish: Plain
  • Thread Size: 5/16-18
  • Length: 1-1/2"
  • Thread: Partially 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)

Lily Z. ★★★★★

These are perfect for a marine project I’m working on—the partially threaded shank gives just the right grip length without needing extra washers. Solid brass with clean threads, and the 70-count pack will last me a while.

Eva A. ★★★★★

The partially threaded grip length made alignment through the clearance holes noticeably easier than dealing with fully threaded bolts. I’ve used about forty of them so far and every one threaded smoothly without a single stripped head.

Samuel ★★★★★

The hex heads seated cleanly with a standard wrench, no stripping or rounding on the first dozen I’ve used. The partial thread gave me a solid grip length for a snug fit through my steel brackets, and the brass finish looks sharp on the project.