Magpul MAG615-BLK M-LOK T-Nut Replacement Set - Chromoly Steel, Black Manganese Phosphate Finish
$5.05
$5.95
(You save
$0.90
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- Type:
- Accessory Attachments
- Firearm Group:
- AR Platform
- Finish-Color:
- Black
- Material:
- 4140 Chromoly Steel
The Magpul MAG615-BLK M-LOK T-Nut Replacement Set gives you the hardware you need to mount M-LOK accessories on your rifle or shotgun. Whether you're adding rail sections, grips, lights, or other modular gear to your handguard or forend, having quality fasteners matters—cheap hardware can work loose or strip out under recoil. This replacement set contains everything needed to refresh or repair M-LOK attachment points, or to have spares on hand for field work.
Built from 4140 chromoly steel and finished in mil-spec manganese phosphate, these t-nuts and screws are engineered for durability and corrosion resistance. Chromoly steel is tougher and more resilient than standard steel, and the manganese phosphate coating provides reliable protection in wet and harsh conditions. The set includes two t-nuts and two different-length button-head cap screws, so you can adapt to various handguard and forend thicknesses without guessing which fastener will work. Each screw features a self-locking reusable thread patch to keep your accessories seated firmly in place and reduce the risk of vibration loosening over time. Made in the U.S.A., these components meet the quality standards Magpul is known for.
If you're building or maintaining an AR platform rifle, modernizing a shotgun, or simply restocking your accessory hardware, the MAG615-BLK is a practical, no-nonsense choice. Keep a set in your range bag or truck for quick repairs or upgrades in the field.
Key Features
- Compatible with all M-LOK accessories and standard M-LOK slots
- Two t-nuts and two different-length button-head cap screws to accommodate various handguard and forend thicknesses
- 4140 chromoly steel construction for superior durability
- Mil-spec manganese phosphate finish resists corrosion
- Self-locking reusable thread patch on screws prevents loosening from recoil and vibration
- Manufactured in the U.S.A.
Specifications
| Brand | Magpul |
| Model | MAG615-BLK |
| Material | 4140 Chromoly Steel |
| Finish | Mil-Spec Manganese Phosphate (Black) |
| Contents | 2 T-Nuts, 2 Button-Head Cap Screws (different lengths), Self-Locking Thread Patches |
| Compatibility | All M-LOK accessories |
| Country of Origin | U.S.A. |
Frequently Asked Questions
Will these t-nuts and screws work with my M-LOK handguard?
Yes. The MAG615-BLK is designed for use with all M-LOK accessories and standard M-LOK slots on handguards, forends, and other components.
Why are there two different-length screws in the set?
Handguards and forends vary in thickness. The two different-length button-head cap screws ensure you have a proper fit regardless of whether your rail is thinner or thicker, so the fastener seats correctly without bottoming out or being too short.
What does the self-locking thread patch do?
The self-locking reusable thread patch on each screw creates friction that keeps the fastener from loosening due to recoil, vibration, or repeated use. It is reusable, so the screw can be removed and reinstalled while maintaining that secure fit.
Are these screws made of the same material as the t-nuts?
Yes. Both the t-nuts and button-head cap screws are made from 4140 chromoly steel with a mil-spec manganese phosphate finish for consistent durability and corrosion resistance.
