Mutual Screw & Supply

5/8-11 X 3" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | Partially Threaded (75 / Pkg.)

5/8-11 X 3" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Plain | - Main image
$75.45 $123.69 In stock

A307 Grade B Steel Plain hex head cap screws, partially threaded, size 5/8-11 x 3". 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: 5/8-11
  • Length: 3"
  • Threads Per Inch: 11
  • Material: A307 Grade B Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 75
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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)

Edward ★★★★★

I needed heavy-duty bolts for a steel rack rebuild, and these 5/8-11 screws fit perfectly with no play in the holes. The partially threaded design worked great for clamping thick flanges without bottoming out, and the plain finish held up to a few accidental hammer taps.

Eva M. ★★★★★

The threads cut smoothly and the hex head grabbed my socket perfectly without any wobble. I used these for a heavy equipment mount and they held solid without stripping under torque. Solid value for a full package of quality industrial bolts.

Joseph O. ★★★★★

Needed some heavy-duty bolts for a trailer hitch repair, and the 3-inch length was perfect for going through the frame. The partially threaded design made installation a breeze since the smooth shank sat flush where it needed to.