Mutual Screw & Supply

1/4-20 X 1-3/8" Hex Machine Bolts | 18/8 Stainless Steel | Partially Threaded (50 / Pkg.)

1/4-20 X 1-3/8" Hex Machine Bolts | 18/8 Stainless Steel | Partially Threaded - Main image
$6.1 $10 In stock

1/4-20 X 1-3/8" Hex Machine Bolts in 18/8 Stainless Steel. 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
  • Stainless steel for superior corrosion resistance

Specifications

  • Type: Hex Machine Bolts
  • Head Style: Hex
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Thread Size: 1/4-20
  • Length: 1-3/8"
  • Thread: Partially Threaded
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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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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

Elizabeth C. ★★★★★

The unthreaded grip length on these made alignment in my jig much easier than with fully threaded bolts. They went in smooth with a standard 7/16" socket, and the 18/8 stainless finish looks clean against the aluminum.

Grace ★★★★★

I needed bolts with a real grip section for a frame assembly, and these 1/4-20 x 1-3/8" stainless ones fit perfectly in the unthreaded portion. The 18/8 material feels solid and should resist rust well outdoors.

Victoria T. ★★★★★

The partially threaded shank made alignment a breeze when I bolted a steel bracket to a wooden bench—no more fighting with threads catching early. The 18/8 stainless finish looks clean and feels solid, and the 50-count box is a great value for the price.