Mutual Screw & Supply

1"-8 X 4-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially Threaded (30 / Pkg.)

1"-8 X 4-1/2" Heavy Hex Cap Screws | ASTM A193 B7 Alloy Steel Plain | Partially - Main image
$111.83 $155.32 In stock

ASTM A193 B7 Alloy Steel Plain hex head cap screws, partially threaded, size 1"-8 x 4-1/2". 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: 4-1/2"
  • Threads Per Inch: 8
  • Material: ASTM A193 B7 Alloy Steel Plain
  • Finish: Plain
  • Thread Style: Partially Threaded
  • Pack Quantity: 30
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Customer Reviews (4.4 / 5 · 5 reviews)

David ★★★★★

Dead-on dimensions—these 1"-8 x 4-1/2" heavy hex heads mated perfectly with our hydraulic press flanges. The partially threaded shank gave just enough grip without bottoming out in the blind hole, and the plain finish is free of any burrs or oil residue.

Thomas ★★★★★

The threads on these B7 alloy screws cut cleanly into the steel I was joining, and the partial thread gave me just the right grip for the deep flange. Solid weight to them, and the hex head grabbed cleanly with a standard socket.

Natalie W. ★★★★★

These bolts handled the heavy equipment assembly without a hitch, and the partial threading made alignment a lot easier than full-threaded ones I've used before. The 1"-8 size fit the nut perfectly right out of the package, and the alloy steel feels solid for the load.