Mutual Screw & Supply

9/16-18 X 4-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (25 / Pkg.)

9/16-18 X 4-1/2" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$65.68 $92.51 In stock

9/16-18 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: 9/16-18
  • Length: 4-1/2"
  • Threads Per Inch: 18
  • 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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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 (4.4 / 5 · 5 reviews)

Harper F. ★★★★★

These bolts threaded perfectly into the frame I’m building, and the yellow zinc finish looks good and seems durable. The partial threading really helped get a tight joint on the thicker bracket.

Harper N. ★★★★★

Needed these for a small machinery repair and the partially threaded design made alignment way easier than I expected. Yellow zinc coating looks clean and the hex head grabbed a socket without any stripping. Pack of 25 feels like a solid value for the price.

Grace ★★★★★

I’ve been using these 9/16‑18 cap screws for a heavy equipment repair and the grade 5 steel with yellow zinc is holding up great. The partial threading made it easy to get a solid bite without binding too early. Exactly what I needed for a secure, lasting fit.