Industrial manufacturing

SM083 Step-type Oxygen Sensor Nut

<p>SM083 step‑type oxygen sensor nut adopts special stepped positioning shoulder structure with M18×1.5 internal thread. It delivers precise installation depth limit to prevent sensor damage caused by over‑tightening. Available in carbon steel and stainless‑steel material options, it fits OEM exhaust component mass production as well as automotive aftermarket modification projects.<br/></p>

SupplierAnji Qiyi Home Technology Co., Ltd.www.qiyimetallic.com

About this product

Product information from the supplier.

The step‑type oxygen sensor nut is a professional mounting fitting designed for oxygen sensor assembly. Equipped with integrated stepped positioning shoulder, it solves the common pain point of excessive tightening during sensor installation. It effectively protects oxygen‑sensor threads and exhaust base, widely used for OEM exhaust component production and aftermarket exhaust refitting scenarios.


Dual‑material Options for Different Application Scenarios

This step nut supports carbon steel and stainless‑steel two material selections. Carbon‑steel version features high strength and cost‑effective performance, suitable for large‑scale OEM batch production. Stainless‑steel variant brings excellent heat‑resistance and anti‑corrosion capability, ideal for harsh under‑car environment of modified vehicles. Customers can select proper material according to project budget and working‑condition requirements.


Step Positioning Shoulder Avoids Over‑Tightening Damage

The core advantage lies in its built‑in stepped positioning shoulder. When installing oxygen sensors, the shoulder sets physical depth limitation. Operators will not screw the sensor too deep, which prevents thread stripping, sensor shell deformation and exhaust base cracking. It greatly reduces installation error rate for assembly line workers and DIY installers.


Precise M18×1.5 Thread & Strict Dimension Tolerance

Manufactured by high‑precision CNC machining, internal M18×1.5 thread matches standard automotive oxygen sensors perfectly. Consistent dimensional tolerance guarantees interchangeability. Smooth inner thread ensures smooth sensor screwing‑in, helps achieve reliable sealing after torque tightening and avoids exhaust leakage risks.


Wide Compatibility for OEM & Aftermarket Projects

Specially developed for oxygen‑sensor mounting points of exhaust pipes, catalytic converters and exhaust manifolds. It is perfectly applicable to OEM exhaust parts mass production, auto repair workshops and vehicle modification stores. Compatible with most M18×1.5 oxygen sensors for American, European and Japanese vehicles.


Source Factory Support for Batch & Custom Orders

Every SM083 step nut undergoes strict dimension inspection. As original manufacturer, we support large‑volume wholesale, and accept custom requirements such as material switching, size adjustment and surface treatment. Stable quality and reliable delivery cycle are provided for global automotive aftermarket clients.