brands

attributes.Thread_Type

attributes.Number_of_Blades

attributes.Sizes_in_Set

attributes.Largest_Imperial_Measure

attributes.Largest_Metric_Measure

attributes.Smallest_Imperial_Measure

attributes.Smallest_Metric_Measure

RS PRO, 28 Blades Thread Pitch Gauge, Metric thread type

RS PRO, 18 Blades Thread Pitch Gauge, Metric thread type

SAM, 32 Blades Thread Pitch Gauge, Metric thread type

Moore & Wright, 22 Blades Thread Pitch Gauge, Metric thread type

SAM Thread Pitch Gauge, Metric thread type

Moore & Wright, 30 Blades Thread Pitch Gauge, Metric thread type


A thread gauge is a tool used to measure the pitch or lead of a screw head. They are designed to determine the gradient for external and internal threads. Thread gauges are useful for checking tool angle while cutting threads in metal turning lathes.

This tool is not used as a precision measuring instrument, rather it allows the user to determine the profile of the given thread and quickly categorise the thread by shape and pitch. This device also saves time, in that it removes the need for the user to measure and calculate the thread pitch of the threaded item.

Thread gauges traditionally consist of multiple blades that can be used to measure the pitch. The blades sit within a tool that resembles a pen knife. The blades can then be twisted out of the tool when in use.

### How to use a thread gauge

To use a thread gauge, first match the type of thread to the gauge. For example, attempting to measure metric threads with an imperial gauge will not return accurate results. To determine the correct gauge, a process of trial and error may be needed if the screw is of unknown origin.

Once the correct gauge is determined, the user should extend one of the leaves of the tool and press it against the threaded portion of a screw. If the teeth (cut into the leaf) match the spacing of the thread, then the user can read off the thread pitch stamped into the leaf. If the fit is not good, the user should try a different leaf.

### Thread Gauge Tips
- Never force a gauge into or on a part being checked
- Handle gauges as you would any precision tool
- Misuse or mishandling can result in nicks or other deformities which can destroy the integrity of the gauge
- Store gauges in a secure location, preferably in individual compartments or containers
- Gauges should be dipped in an oil-wax based seal or coated with a rust preventive prior to storing


Thread Gauges

Engineering Test & Measurement

Test & Measurement

1228569899

1805640584

1950438482

2506730665

3047907070

3089561311

3379516231

3577158573

3702440375

3735939629

4084450865

4292484756

607105215

1568119392

1953764780

281144504

2847774414

2854130884

3031041232

3694170890

4239710393

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Moore & Wright Whitworth/Metric thread type

Metric Thread Gauges

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