Mutual Screw & Supply

5/16-18 X 6" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially Threaded (50 / Pkg.)

5/16-18 X 6" Hex Head Cap Screws | Grade 5 Steel Yellow Zinc | Partially - Main image
$42.55 $66.48 In stock

5/16-18 x 6" 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 50

Specifications

  • Thread Size: 5/16-18
  • Length: 6"
  • Threads Per Inch: 18
  • Material: Steel
  • Grade: Grade 5
  • Finish: Yellow Zinc CR+6
  • Thread Style: Partially Threaded
  • Pack Quantity: 50
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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 (4.8 / 5 · 5 reviews)

Eli ★★★★★

Used these for attaching a bracket to my trailer frame and the 6 inch length gave me just enough bite with the locking nut. The yellow zinc held up fine after a few days of rain while I was working outside.

Owen ★★★★★

The hex head grabbed my socket wrench perfectly without any slipping. These bolts feel solid for heavy equipment assembly, and the yellow zinc coating looks clean and uniform across all 50 pieces.

Charlotte ★★★★★

The partially threaded shank made installing these into my machinery frame a lot easier since the threads didn't bind up early. The yellow zinc coating looks uniform and should resist rust well in my shop.