Mutual Screw & Supply

1"-8 X 3-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially Threaded (35 / Pkg.)

1"-8 X 3-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially - Main image
$109.82 $146.42 In stock

ASTM A193 B7 Alloy Steel Plain hex head cap screws, partially threaded, size 1"-8 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: 1-8
  • Length: 3-1/2"
  • Threads Per Inch: 8
  • Material: ASTM A193 B7 Alloy Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 35
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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)

Emma ★★★★★

Threads are clean and the plating looks uniform across all 35 pieces—no burrs or rough edges that would gall during torquing. The partial threading on these 1"-8 bolts gave me the exact grip I needed for a flange setup without shimming.

Harper T. ★★★★★

Used these on a heavy press rebuild and the threads cut cleanly without any galling. The plain finish is fine for indoor machinery, and the partial threading gave me just the right grip length.

David X. ★★★★★

The 1"-8 threading was coarse and clean on all 35 pieces, so they seated into my equipment’s tapped holes without any binding. These heavy hex heads gave me a solid grip with a wrench, and the plain finish looks properly industrial. Just what I needed for a heavy assembly job.