Mutual Screw & Supply

HOLO-KROME 72310 3/4-10 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (25 / Pkg.)

HOLO-KROME 72310 3/4-10 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$61.34 $102.24 In stock

These 3/4-10 x 2-1/4" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Socket Drive
  • Thread size: 3/4-10
  • Length: 2-1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • Thread size: 3/4-10
  • Length: 2-1/4"
  • Threads per inch: 10
  • Measurement type: Inch
  • Pack quantity: 25 per package
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 (4.8 / 5 · 5 reviews)

Richard Z. ★★★★★

The hex socket drive grabbed perfectly with my Allen wrench, making installation on a drill jig much smoother than with hex cap screws. The black oxide finish seems durable and should resist rust in my shop.

William G. ★★★★★

Installed a full set on my milling fixture and the threads seated without any binding. The hex drive grabbed cleanly even at higher torque, and the alloy steel feels plenty solid for the jig work I’m doing.

James S. ★★★★★

Had to torque these down pretty good for a press fixture and the hex socket held perfectly without any stripping. The black oxide finish looks clean and seems like it’ll resist rust in the shop.