20mm Go/No-Go Plug Gauge H7 Limit Mandrel, Nominal Ø 20mm - TECWERK

Ensure consistent bore verification with the combination of H7 tolerance and a 20 mm nominal diameter for repeatable pass/fail inspection. Benefit from a straightforward go/no‑go check that reduces inspection time and supports production quality. Order the gauge directly via Metav Werkzeuge or consult our specialists for application advice.

Limit plug gauge D20 mm H7 — TECWERK

A Limit plug gauge D20 mm H7 is designed for fast, reliable inspection of 20 mm bores in production and workshop environments

• H7 tolerance for precise bore checks
• Nominal diameter 20 mm
• Go/no-go plug gauge for rapid inspection

Reduce downtime with quick, measurable checks

The limit plug gauge provides a direct, unambiguous result for internal diameter inspection, eliminating lengthy measuring routines. By using a gauge sized to the 20 mm nominal diameter and specified to H7, dimensional conformity is confirmed instantly: the gauge either enters the bore (go) or it does not (no‑go). This method shortens inspection cycles, supports throughput and reduces the time spent at metrology benches. The simple mechanical check is especially effective for repetitive production control and spot checks on incoming parts.

Clear tolerance interpretation for dependable quality control

The H7 tolerance class denotes a standard hole tolerance widely used in engineering drawings; pairing this tolerance with a calibrated limit gauge offers traceable and standardised pass/fail criteria. For buyers and quality engineers, this translates into fewer measurement ambiguities and clearer decision-making at the workstation. Where a specification calls for a 20 mm ± H7 hole, the plug gauge serves as a practical tool to demonstrate conformity without requiring elaborate measuring instruments.

Practical handling that fits the workshop routine

Designed for direct use in production, the plug gauge speeds up inspection without specialised training. The go/no‑go principle is intuitive and minimises operator error: one side of the gauge confirms acceptance, the opposite face indicates rejection. For serial inspection tasks, the mechanical simplicity of the gauge reduces the potential for measurement drift seen with complex instruments and helps maintain consistent sampling procedures across shifts.

Integration into quality processes and documentation

Although compact in form, the plug gauge supports documented quality routines: its use can be recorded as part of incoming inspection logs or process control sheets, and it can be referenced in production work instructions. When combined with routine calibration and traceability records, the gauge becomes a reliable element in maintaining compliance with internal quality standards. For operations seeking to harmonise fast inspection with formal documentation, the limit gauge offers an efficient bridge between shop‑floor practice and audit requirements.

For reliable verification of 20 mm bores, contact Metav Werkzeuge to source the TECWERK limit plug gauge and discuss calibration and traceability options tailored to production needs.

Technical Data

• Article number: 2000858600NW
• Label: Grenzlehrdorn D.20mm Tol.H7 TECWERK
• SKU: 2000858600NW

Data

• Nominal diameter: 20 mm
• Tolerance class: H7
• Packaging unit: 1

Special features

• Product type: Limit plug gauge (go/no‑go)
• Manufacturer: TECWERK
• UID: 2000858600NW

FAQ

What does the H7 tolerance mean for inspection?
The H7 tolerance indicates the standardised hole tolerance applied to the 20 mm size; the Limit plug gauge D20 mm H7 verifies whether a bore complies with that tolerance through a simple pass/fail check.

How is the plug gauge used in routine checks?
For routine checks, the plug gauge is inserted into the bore; if the go end enters and the no‑go end does not, the part conforms to the specified tolerance for the 20 mm hole.

Can this gauge be used for serial inspection on production lines?
Yes, the go/no‑go principle used by this limit gauge is well suited to serial inspection and quick sampling, enabling fast decisions without complex measuring equipment.

Is calibration required for the plug gauge?
Calibration is recommended to maintain traceability; the TECWERK limit plug gauge should be included in regular calibration intervals consistent with the site's quality procedures and documented accordingly.

TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund