Mutual Screw & Supply

7/8-9 X 4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | Partially Threaded (25 / Pkg.)

7/8-9 X 4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | - Main image
$101.52 $142.98 In stock

A307 Grade B Steel Plain hex head cap screws, partially threaded, size 7/8-9 x 4". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • A307 Grade B Steel Plain construction
  • partially threaded configuration
  • Hex head for wrench or socket drive
  • For machinery, equipment, and general-purpose fastening

Specifications

  • Thread Size: 7/8-9
  • Length: 4"
  • Threads Per Inch: 9
  • Material: A307 Grade B Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 25
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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 (5.0 / 5 · 5 reviews)

Violet ★★★★★

I needed some heavy-duty fasteners for a machinery repair and these hex cap screws handled the torque beautifully without stripping. The partial threading made alignment much easier compared to fully threaded bolts I've used before. Way more consistent than the last batch I bought from a different s

Michael ★★★★★

The threads cut cleanly and the hex head fit my wrench perfectly for a trailer hitch repair. These bolts feel solid and the partial threading made alignment much easier.

Stella B. ★★★★★

I needed some heavy-duty bolts for a trailer hitch repair, and these 7/8-9 x 4" hex cap screws fit perfectly with the partially threaded section making installation straightforward. They felt solid and the A307 grade steel gave me confidence in the assembly.