Mutual Screw & Supply

3/8-16 X 2-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow Zinc | Partially Threaded (50 / Pkg.)

3/8-16 X 2-1/4" Hex Head Cap Screws | USA Made | Grade L9 Alloy Steel Yellow - Main image
$64.69 $93.76 In stock

3/8-16 x 2-1/4" hex head cap screws for machinery, equipment assembly and general industrial fastening.

  • Grade L9 Alloy Steel Yellow Zinc construction
  • Partially Threaded
  • Hex head for wrench or socket drive
  • Made in the USA
  • Sold in packs of 50

Specifications

  • Thread Size: 3/8-16
  • Length: 2-1/4"
  • Threads Per Inch: 16
  • Material: Alloy Steel
  • Grade: Grade L9
  • Finish: Yellow Zinc CR+3
  • Thread Style: Partially Threaded
  • Pack Quantity: 50
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)

Sophia M. ★★★★★

I needed these for a heavy equipment repair, and the partial threading made installation much easier than fully threaded bolts would have. The hex head gives a solid grip with a socket, and they feel very sturdy under torque.

Emma E. ★★★★★

The yellow zinc finish on these bolts looks great and resisted my torque wrench without a single strip. They threaded perfectly into a steel bracket for my press build.

Hazel ★★★★★

Installed these on a hydraulic cylinder mount and they torqued up perfectly without stripping. The yellow zinc finish is uniform and the partial threads make alignment much easier.