Mutual Screw & Supply

7/8-9 X 3-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially Threaded (50 / Pkg.)

7/8-9 X 3-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | - Main image
$110.32 $159.88 In stock

ASTM A193 B7 Alloy Steel Plain hex head cap screws, partially threaded, size 7/8-9 x 3-1/2". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • ASTM A193 B7 Alloy 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: 3-1/2"
  • Threads Per Inch: 9
  • Material: ASTM A193 B7 Alloy Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 50
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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 (4.6 / 5 · 5 reviews)

Owen C. ★★★★★

Finally found some heavy hex bolts that actually fit my coupling flanges without slop; the threads are clean and the partial threading gives a solid grip without bottoming out. These B7s torqued to spec without any galling.

Madison B. ★★★★★

Just torqued these down on a pump base today, the threads were clean and the hex heads held a socket without slipping. Looks like they'll handle heavy loads just fine.

Claire X. ★★★★★

I needed something tough for a machine frame repair, and the partially threaded design on these made it easy to get a tight fit. The hex heads held up beautifully under my impact wrench without stripping.