Rusan M49x0.75 Counter Nut

• M49x0.75 thread format: matches clip-on devices and adapter components that use the M49x0.75 interface, helping maintain a correct mechanical fit within a thermal clip-on setup.
• Steel construction: the steel body provides the rigidity needed for a secure threaded connection, reducing unwanted movement once the adapter assembly is tightened in place.
• Compact 10.00 g weight: adds very little mass to the overall clip-on system, so it supports the adapter assembly without noticeably affecting handling or balance.
• Accessory for thermal clip-ons: built for use in clip-on mounting systems, where small parts such as counter nuts help position and secure adapters correctly on the device side.
• Black finish: the subdued finish fits visually with most clip-on devices and adapter hardware while also being practical for field use.

About the Rusan Accessories Series

Rusan Accessories is the supporting hardware range behind the company’s clip-on mounting systems for night-vision and thermal devices. The series covers adapter parts, reduction rings, spare components and related accessories that allow a clip-on setup to be matched to a specific device thread or riflescope combination. Rather than treating every optic as a one-piece solution, Rusan built this range around the practical needs of users who want to configure equipment correctly and keep it serviceable over time.

Within the wider Rusan lineup, the series sits alongside the company’s mounts, rings and rails, but its role is more specialized: it supports the interface between the clip-on unit and the host optic. Conventional and modular adapter systems are both part of this family, giving users a choice between a straightforward dedicated setup and a more flexible arrangement where one clip-on device can be shared across multiple rifles or optics. That makes the series particularly relevant for hunters and professional users who need dependable fit, repeatable positioning and compatibility across different thermal clip-on platforms.

About the Rusan M49x0.75 Counter Nut

The Rusan M49x0.75 Counter Nut is a small but important accessory for clip-on mounting systems that use an M49x0.75 thread. Its job is simple: it helps secure the threaded connection within the adapter assembly so the thermal clip-on setup remains properly positioned. In practice, that matters because even minor movement in the interface between device and adapter can affect how confidently the system mounts and how neatly the components seat together.

The use of steel construction gives this part the strength expected from a fastening component that must hold its position under repeated installation and removal. At the same time, the nut weighs only 10.00 g, so it adds almost no bulk to the overall setup. That is useful on clip-on systems, where users often want to keep added front-end weight as low as possible while still using durable hardware.

As part of the Rusan adapter ecosystem for thermal clip-on devices, this counter nut is intended for users who need the correct thread-specific component rather than a universal workaround. The black finish keeps it visually consistent with surrounding adapter hardware, and the dedicated thread pattern makes it a practical choice when building, replacing or maintaining a compatible clip-on adapter assembly.

About Rusan

Rusan-Mikron is a Croatian manufacturer based in Marija Bistrica, Croatia, with roots in the Rusan family’s metalworking business dating back to 1983. The company developed from gunsmithing and precision metalwork into a specialist maker of scope mounts, rings, Picatinny rails and firearm tuning components. That background is important in products such as adapter hardware, where machining accuracy and repeatable fit matter as much as the optic itself.

Rusan is particularly well known for accessories that connect riflescopes with night-vision and thermal-imaging devices. The company introduced its clip-on sight adapter clamp in 2009 and has continued to expand both conventional and modular adapter systems for modern hunting optics. Alongside adapter products, Rusan also manufactures rails and mounting solutions for a wide range of rifle platforms, giving the brand a strong reputation in the field of mechanical interfaces for sporting and shooting optics.

Main Features

• Manufacturer: Rusan
• Series: Rusan Accessories
• Made in: Croatia
• Product type: Counter nut
• Thread: M49x0.75
• Accessory for: Thermal Clip-on
• Material: Steel
• Weight: 10.00 g
• Color: Black

Warranty

2 years. The Rusan M49x0.75 Counter Nut is covered by a 2-year warranty.