Mutual Screw & Supply

1/4-20 X 3-1/2" Hex Machine Bolts | 18/8 Stainless Steel | Partially Threaded (50 / Pkg.)

1/4-20 X 3-1/2" Hex Machine Bolts | 18/8 Stainless Steel | Partially Threaded - Main image
$7.4 $10 In stock

1/4-20 X 3-1/2" 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: 3-1/2"
  • 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)

Sofia G. ★★★★★

The unthreaded grip length on these bolts made aligning my metal frame project so much easier than using fully threaded ones. The 18/8 stainless steel finish looks clean and feels solid.

Daniel B. ★★★★★

The unthreaded grip length on these made aligning my steel brackets much easier than with fully threaded bolts. They feel solid and corrosion-resistant, which is exactly what I needed for an outdoor project.

Nicholas ★★★★★

These bolts fit perfectly into the pre-drilled holes on my trailer hitch project, and the partial threading gave me just the right grip length for a clean, tight fit. The stainless steel finish looks clean and hasn't shown any signs of rust after a few weeks outdoors.