Mutual Screw & Supply

3/4-10 X 3-1/4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | Partially Threaded (40 / Pkg.)

3/4-10 X 3-1/4" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | - Main image
$77.75 $112.68 In stock

A307 Grade B Steel Plain hex head cap screws, partially threaded, size 3/4-10 x 3-1/4". 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: 3/4-10
  • Length: 3-1/4"
  • Threads Per Inch: 10
  • Material: A307 Grade B Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 40
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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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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)

Eva U. ★★★★★

Needed heavy-duty bolts for a trailer hitch rebuild, and these threaded smoothly without any binding. The partially threaded shank gave plenty of grip length for my application. They feel solid—exactly what I expected from USA steel.

Stella ★★★★★

Had to tighten these down with a big wrench and the hex head held up perfectly without rounding. The 3/4-10 threads engaged smoothly on the first try, which saved me time on a heavy equipment repair.

George A. ★★★★★

The threads cut clean and the partially threaded section seated perfectly against my frame bracket—no fussing with alignment. At 3/4-10, these feel solid in hand, and the US-made steel held up without a hint of galling while I torqued them down.