Description
Overview:
The M12 x 1.5 Metric Fine No-Go Ring Gauge 6g (4129 Series) is a precision inspection tool for checking external metric threads on bolts, studs and male fittings. Made from hardened alloy steel for durability, it is used to confirm that a thread does not exceed the upper limit of the ISO 1502 tolerance zone. Sized M12 with a 1.5 mm fine pitch and tolerance class 6g, this No-Go ring is suited to quality control in machine shops, fabrication, maintenance and production environments. The compact ring format enables quick, consistent checks at the bench, at the machine or during incoming goods inspection, helping prevent out-of-spec parts from entering assemblies on construction equipment, garden machinery and general engineering applications.
Key Features:
- M12 x 1.5 fine-pitch No-Go ring gauge for external threads
- Tolerance grade 6g in line with ISO 1502 for reliable conformity checks
- Hardened alloy steel construction for wear resistance and long service life
- Precision manufacture for consistent, repeatable measurement results
- Confirms oversize threads are rejected before assembly or dispatch
- Clear size and class markings on the gauge body for quick identification
- Compact, easy-to-handle ring form for use at the machine or inspection bench
- Suitable for use alongside lathes, CNC machining, thread rolling and maintenance operations
Typical Applications:
Used for thread acceptance testing on bolts, studs and male connectors in production, rework and maintenance. Ideal for workshop inspection, first-off checks, in-process control and final QA on parts used in construction plant, agricultural and garden machinery, fabrications and general engineering. Helps prevent assembly issues, re-tapping and costly rework by identifying oversize or damaged threads early.
Also known as:
No-go check ring, metric fine limit ring, rejection ring, limit gauge ring, M12x1.5 6g no-go, inspection ring for external threads, metric fine no-go checker, thread rejection ring.
Alternate Part Numbers:
4129-12RN, 841 2913, 412912RN
Product Specifications
| L&S Part No. | 841 2913 |
|---|---|
| Unit of Sale | 1 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£78.14 £65.12 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£79.52 £66.27
