Mutual Screw & Supply

1"-8 X 4-1/2" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Zinc Plated | Partially Threaded (30 / Pkg.)

1"-8 X 4-1/2" Heavy Hex Cap Screws | USA Made | A307 Grade B Steel Zinc Plated - Main image
$210.7 $284.73 In stock

A307 Grade B Steel Zinc Plated hex head cap screws, partially threaded, size 1"-8 x 4-1/2". A dependable fastener for machinery, equipment assembly, and general industrial use.

  • A307 Grade B Steel Zinc Plated 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: A307 Grade B Steel Zinc Plated
  • Finish: Zinc Plated CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 30
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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)

Ellie ★★★★★

These threads cut cleanly with a tap and the 4-1/2" length gave me just enough grip for a heavy equipment frame repair. The partial threading really helped center the load without binding.

Stella ★★★★★

The zinc coating is noticeably thicker than other hardware store bolts I've used, which should help with rust resistance on outdoor projects. These grade B screws threaded smoothly into pre-drilled holes on my trailer frame without any binding.

Henry ★★★★★

Picked up a pack for a heavy equipment repair and the threads cut clean without any binding. The zinc coating looks uniform and should hold up well in my shop.