Mutual Screw & Supply

5/16-24 X 5/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | Fully Threaded (200 / Pkg.)

5/16-24 X 5/8" Hex Head Cap Screws | USA Made | Grade 8 Steel Yellow Zinc | - Main image
$34.8 $49.72 In stock

5/16-24 x 5/8" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade 8 Steel Yellow Zinc construction
  • Fully Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 200

Specifications

  • Thread Size: 5/16-24
  • Length: 5/8"
  • Threads Per Inch: 24
  • Material: Steel
  • Grade: Grade 8
  • Finish: Yellow Zinc CR+3
  • Thread Style: Fully Threaded
  • Pack Quantity: 200
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Abigail G. ★★★★★

Used a 1/2" socket on these and they snugged down perfectly on a steel jig table. The threads are clean and the yellow zinc coating has a nice even finish, no flaking or bare spots. Priced right for a full box of 200.

Eli ★★★★★

Installed these on a heavy-duty bracket I'm building, and the Grade 8 steel threads cut cleanly without any galling. The yellow zinc coating looks consistent across all 200 pieces, which is nice for a uniform finish.

Sophia X. ★★★★★

Pulled a few of these out to test on a jig I'm building, and they thread smoothly without binding. The yellow zinc finish is uniform and hasn't chipped under my socket.