Plain plug gauge G7

Title

G7 Plug Gauge 1–20mm | High Precision Double Ended Go No-Go Gauge Manufacturer Supplier

Description

G7 Plug Gauge is a precision measuring tool designed for hole size verification and tolerance control in machining environments. It offers a measuring range of 1mm to 20mm, G7 tolerance accuracy, and a double-ended go/no-go structure, making it suitable for automotive, general engineering, and metal processing industries. Manufactured from hardened tool steel, this tool ensures stable and reliable performance for inspection, machining, and quality control applications.

SKU Table

Technical Specifications

• Product Name: Plug Gauge G7 Double Ended
• Category: Limit Gauge / Plug Gauge
• Range: 1mm – 20mm
• Accuracy: G7 tolerance grade
• Resolution: Not applicable (limit gauge)
• Material: Hardened tool steel
• Display: None (manual gauge)
• Output: None
• Structure Feature: Double-ended Go/No-Go design
• Standard: ISO/DIN tolerance system (G7)
• Brand: OEM / Customizable
• Model / Art No: 17-3117 Series

Applications

This product is suitable for:

• Hole tolerance verification
• Go/No-Go inspection in production lines
• Machining process control
• Incoming and final inspection

It is widely used in:

• Automotive manufacturing
• General engineering
• CNC machining workshops
• Metal processing industries

Selection Advice

This model is recommended for users who need G7 tolerance inspection for standard precision hole control in batch production.

• For tighter tolerance requirements, consider P7 or H7 plug gauges
• For larger diameters, consider custom or extended range plug gauges (>20mm)
• For real-time measurement and data recording, consider digital bore gauges or air gauges

Key Features

• Double-ended Go/No-Go design for efficient pass/fail inspection
• Clearly engraved size and tolerance on front, serial number on reverse
• Supplied with inspection report (provided by Dongzhe) for traceability
• Durable hardened steel construction for long service life
• Plastic box packaging for protection and storage

Packaging Details

• Each gauge packed in plastic box
• Inspection report included
• Clear labeling for identification
• Suitable for storage and transport

FAQ

1. What is the difference between models?

All models are identical in design and tolerance (G7). The difference lies only in the diameter size from Ø1mm to Ø20mm, with each SKU representing one size.

2. Accuracy vs Resolution – what’s the difference?

• Accuracy (G7): Defines allowable tolerance limits for hole size
• Resolution: Not applicable, as plug gauges are limit gauges without numerical readout

3. Manual vs Digital gauges – which is better?

• Plug Gauge: Fast Go/No-Go inspection, ideal for production environments
• Digital Tools: Provide actual measurement values but require more time and calibration

Plug gauges are preferred for efficiency and repeatability in mass production.

4. Which industries commonly use G7 plug gauges?

Typical industries include:

• Automotive
• General machining
• Metal fabrication
• Equipment manufacturing

5. Is customization available?

Yes, customization options include:

• Other tolerance classes (H7, H6, P7, etc.)
• Special diameter sizes
• Custom engraving (logo, serial format)
• Calibration certificates compliant with ISO standards