ERATAC M-LOK Mounting Nut – T0001-520A

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ERATAC ORIGINAL SPARE PART · M-LOK · FASTENING NUT
M-LOK Nut: the right counterpart for the right interface
This nut is intended for ERATAC accessories on an M-LOK interface. M-LOK and KeyMod look similar in small parts format but are mechanically not interchangeable.

If a fastening nut is lost, it is not necessarily required to replace the entire accessory. The prerequisite is that the screw, nut, component, and handguard clearly belong to the M-LOK system.
Check before purchase


Interface: The handguard must have M-LOK, not KeyMod.

Accessory: The ERATAC attachment must use this spare nut.

Screw: Check the thread, length, and condition of the associated screw.

Our assessment from user and instructor perspective
The right choice as a targeted original replacement. Not useful as an improvised conversion from KeyMod to M-LOK.

Fits well if: you need to replace exactly this nut on a matching ERATAC M-LOK accessory.
Not ideal if: you own KeyMod accessories or need a complete adapter unit.

What really counts in use


Original replacement: targeted repair instead of replacing the entire adapter.

System fidelity: for the geometry of the M-LOK interface.

Compact: no additional adapter layer required.

Instructor/User
torque tip: Before tightening, correctly align the nut in the M-LOK contour. Only tighten after proper seating with the torque specified for the accessory.
Limits, compatibility and safe use
The nut alone does not make foreign accessories M-LOK compatible. Screw, contact surface and accessory must fit together.
Important note: After initial assembly, check clearance to barrel, gas block and moving parts. Screws must not protrude inside.
Comparison and useful alternatives
For complete accessories, compare the ERATAC M-LOK HK mount and M-LOK Picatinny rails. More parts are available in the ERATAC collection.
Technical practical data


Item number: T0001-520A

Product type: fastening nut / spare part

Interface: M-LOK

Scope of delivery
1× ERATAC M-LOK fastening nut
Manufacturer and product safety

Manufacturer: RECKNAGEL GmbH & Co. KG, Landwehr 4, 97493 Bergrheinfeld, Germany
Contact: [email protected] · +49 (0)9721 94810-0 · www.eratac.de
Observe the product-specific instructions before assembly and use. Use only on compatible, undamaged interfaces; check firm fit and safe function before each use.

Frequently asked questions
Is a screw included? Delivered is the product-specifically designated fastening nut; additional mounting material only if explicitly listed in the scope of delivery. Does it fit KeyMod? No, the systems are not interchangeable. Can I mount foreign accessories with it? Only if the manufacturer explicitly confirms full compatibility. What torque applies? The value of the complete ERATAC accessory, not a general value for the nut. What must be checked inside? Screw protrusion and clearance to all adjacent parts.