Mutual Screw & Supply

5/8-18 X 2-1/4" Hex Head Cap Screws | USA Made | PFC9 Alloy Steel Yellow Zinc (25 / Pkg.)

5/8-18 X 2-1/4" Hex Head Cap Screws | USA Made | PFC9 Alloy Steel Yellow Zinc - Main image
$49.18 $74.52 In stock

5/8-18 x 2-1/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • PFC9 Alloy Steel Yellow Zinc construction
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 25

Specifications

  • Thread Size: 5/8-18
  • Length: 2-1/4"
  • Threads Per Inch: 18
  • Material: Alloy Steel
  • Grade: PFC9
  • Finish: Yellow Zinc CR+6
  • 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 (4.4 / 5 · 5 reviews)

Matthew B. ★★★★★

These hex bolts threaded in perfectly on my milling machine’s rotary table, and the yellow zinc coating looks clean and corrosion-resistant. The 5/8-18 threads were sharp and consistent across all 25 pieces, which I appreciate for a precise fit.

Evelyn ★★★★★

I needed these for a heavy-duty press repair and the threads were clean and consistent right out of the package. The yellow zinc coating seems thick and even, should hold up well in the shop environment.

Sebastian J. ★★★★☆

I needed some heavy-duty bolts for a piece of farm equipment and these hex heads cinched down tight without stripping. The alloy steel feels plenty strong, though one screw had a tiny burr on the threads. Still, for 25 pieces made here, it’s a solid deal.