The Magpul M-LOK T-Nut Replacement Set (Magpul part no. MAG615-BLK) is a made-in-the-USA hardware pack built to fit any standard M-LOK accessory. Magpul machines the T-nuts and screws from 4140 chromoly steel and finishes them in a Mil-Spec manganese phosphate coating for corrosion resistance. The set includes two T-nuts along with two different-length button-head cap screws, so you can match the screw length to your handguard or forend’s wall thickness instead of guessing. A self-locking, reusable thread patch on each screw keeps the fastener from backing out once it’s torqued down.

Key Specifications

• Made in the USA.
• Machined from 4140 chromoly steel for durable, repeatable hardware.
• Finished with a Mil-Spec manganese phosphate coating for corrosion resistance.
• Includes two T-nuts for M-LOK accessory mounting.
• Includes two different-length button-head cap screws, matching various handguard or forend thicknesses.
• Screws feature a self-locking, reusable thread patch that resists backing out after torquing.
• Designed for use with all M-LOK accessories, not one specific brand.

Frequently Asked Questions

What’s included in this set? Two T-nuts and two different-length button-head cap screws with a reusable thread-locking patch.

Will this fit my M-LOK handguard? Yes, it’s designed for use with all M-LOK accessories, and the two screw lengths cover various handguard wall thicknesses.

Can I reuse the thread patch after removing a screw? Yes, the self-locking patch is designed to be reusable.

Buy the Magpul M-LOK T-Nut Replacement Hardware Set

Losing a T-nut or stripping a screw shouldn’t mean replacing an entire M-LOK accessory, and this Magpul set gets your hardware back to spec in minutes. Order from our Lubbock, Texas gun shop and it ships fast to your door, along with more gun accessories and parts.