Welcome to Shanghai Jescale Instrument Technology Co., Ltd
Don’t rely solely on go/no-go gauges to assess thread quality | Yeqi Instrument Thread Comprehensive Measuring Machine
2026-09-24 00:00
Many factories inspect threads by simply screwing a go‑no‑go gauge onto the part; if it passes, the component is released. But have you ever encountered this situation: the gauge shows no issues, yet during assembly the thread jams, sealing performance deteriorates, or even after installation the joint loosens and fails? The root cause is that go‑no‑go gauges can only determine whether a thread will screw together—they cannot detect the minute deviations hidden within the thread profile. The Yeqi Instrument Thread Comprehensive Measuring Machine breaks away from the traditional “go/no‑go” single‑dimensional inspection approach. It directly scans the actual thread profile, quantifying and revealing even the tiniest micron‑scale defects that are otherwise invisible.
Don’t rely solely on go/no-go gauges to assess thread quality | Yeqi Instrument Thread Comprehensive Measuring Machine
Many factories inspect threads by simply screwing a go‑no‑go gauge onto the fastener; if it passes, the part is released. But have you ever encountered this situation: the gauge inspection shows no issues, yet during assembly the thread seizes, sealing performance is poor, or even after commissioning the joint loosens and fails? The root cause is that go‑no‑go gauges can only determine whether the thread can be screwed together—they cannot detect the minute deviations hidden within the thread profile.
The Yechi Instrument Thread Comprehensive Measuring Machine breaks away from the traditional “go/no-go” single‑dimensional inspection approach, directly scanning the true thread profile and quantitatively revealing even invisible micron‑scale defects.
The equipment is equipped with a precision probe‑based scanning system. After clamping the workpiece and initiating measurement, it acquires all critical parameters in a single pass—such as effective pitch diameter, single‑thread pitch diameter, major diameter, minor diameter, lead, thread profile half‑angle, and taper—and simultaneously outputs these values while automatically generating a thread‑profile curve. Minor chipping, surface waviness, and contour distortion are clearly visualized on the profile plot, eliminating the need for subjective judgment based on manual experience.
Both internal and external threads can be inspected, covering cylindrical, tapered, trapezoidal, and serrated threads. It is capable of measuring thread ring gauges, plug gauges, and finished threaded workpieces. The device features built-in databases for multiple domestic and international thread standards, including GB, ISO, ANSI, DIN, and JIS. Upon completion of measurement, it automatically compares the results against the relevant standards and allows one-click export of reports for archiving.
1. Eliminate human error and ensure data stability and reproducibility.
With the three‑point method and manual gauge measurements, results can vary depending on the operator’s force and technique. In contrast, fully automated scanning minimizes human intervention, delivers micron‑level stability, and ensures excellent repeatability across multiple measurements, resulting in more reliable quality‑control outcomes.
2. Low learning curve—new users can get up and running quickly.
Workpiece clamping is straightforward, and the software interface is intuitive; simply select the thread specification and its corresponding standard to initiate fully automatic scanning. The system features built-in probe auto‑identification, minimizing the risk of probe collisions and eliminating the need for extensive specialized training.
3. Efficiency enhancement, balancing laboratory precision with workshop sampling inspections.
No need to perform step-by-step, item-by-item measurements—complete the full set of parameter acquisition in just a few minutes. It meets the high‑precision calibration requirements of metrology laboratories while also supporting random sampling on factory production lines, thereby reducing quality‑inspection lead times.
A single device can meet the testing requirements of various industries and job roles:
Metrology Institute / Third-Party Testing Agency: Thread gauge verification, issuing traceable test reports to meet system audit requirements.
Aerospace, automotive components, oil‑field tubing, and fastener industries: perform final thread inspection to detect process deviations early and prevent batch rework.
Gauge Workshop: Regularly calibrate thread plug gauges and ring gauges, promptly detect gauge wear, and prevent gauge inaccuracy from resulting in the scrapping of entire batches of workpieces.
Jescale
Contact Us:
Landline: +86 021-61259099
1st Floor, Building 3, Lane 10688, Beiqing Road, Qingpu District, Shanghai
Join our mailing list and stay connected to our work