Mutual Screw & Supply

1/2-20 X 4-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

1/2-20 X 4-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$40.62 $59.73 In stock

1/2-20 x 4-1/2" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 5 Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Sold in packs of 25

Specifications

  • Thread Size: 1/2-20
  • Length: 4-1/2"
  • Threads Per Inch: 20
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 25
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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)

Natalie S. ★★★★★

The hex heads fit my socket wrench perfectly for a heavy machinery repair, and the yellow zinc coating looks durable. These grade 5 bolts held tight without any stripping during installation.

Victoria O. ★★★★★

The partial threading is exactly what I needed for bolting a steel jig to my workbench, and the hex heads grabbed my socket wrench without any slipping. Yellow zinc finish looks clean and the Grade 5 rating gives me confidence under load.

Joshua ★★★★★

These Grade 5 bolts drove smoothly into the frame with a socket, and the yellow zinc coating looks good against the dark steel. A 4-1/2 length with partial threading was exactly what I needed for this motor mount, and the hex head gave me solid bite without stripping.