Thread Plug Gages & Plain Plug Gages | Gage Assembly
Products2021-09-07T16:17:35-05:00

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Thread Plug Gages

Taperlock Gages

taperlock gauge

Taperlock Thread Gage Manufacturer

CLASS X TOLERANCE – RH – CHROME

What Are Taperlock Thread Plug Gages Used For?

Taperlock thread plug gages are used to check the accuracy and dimension of parts that require high tolerances and a need for great accuracy, such as those used in the medical, automotive, oil/gas and aerospace industries.

A thread plug gage measures the dimensions of a part by entering or not entering the internal thread (inside the hole of a part as required).The Go end should engage and the Not Go(NoGo) end should not engage the part.  This is known as fixed limit gaging.

Taperlock style (000 to 1.5 inches diameter sizes only): These gages have a tapered shank behind the threaded portion. They are firmly pressed into an aluminum handle that has a matched tapered hole. New gage members can be inserted into the existing handle.

Gage Assembly can produce high quality taperlock thread plug gages

Nominal Size Handle Size
.060   0 – 80 000
.073   1 – 64 000
.073   1 – 72 000
.086   2 – 56 000
.086   2 – 64 000
.099   3 – 48 000
.099   3 – 56 000
.112   4 – 40 00
.112   4 – 48 00
.125   5 – 40 00
.125   5 – 44 00
.138   6 – 32 00
.138   6 – 40 00
.164   8 – 32 0
.164   8 – 36 0
.190   10 – 24 0
.190   10 – 32 0
.216   12 – 24 0
.216   12 – 28 0
1/4 – 20 1
1/4 – 28 1
5/16 – 18 1
5/16 – 24 1
3/8 – 16 2
3/8 – 24 2
7/16 – 14 2
7/16 – 20 2
1/2 – 13 2
1/2 – 20 2
9/16 – 12 3
9/16 – 18 3
5/8 – 11 3
5/8 – 18 3
3/4 – 10 3
3/4 – 16 3
7/8 – 9 4
7/8 – 14 4
1 – 8 4
1 – 12 4
1 – 14 4
1-1/8 – 7 4
1-1/8 – 12 4
1-1/4 – 7 5
1-1/4 – 12 5
1-3/8 – 6 5
1-3/8 – 12 5
1-1/2 – 6 5
1-1/2 – 12 5
Nominal Size Handle Size
M   1.6 x 0.35 000
M   2 x 0.4 000
M   2.5 x 0.45 000
M   3 x 0.5 00
M   3.5 x 0.6 00
M   4 x 0.7 0
M   5 x 0.8 0
M   6 x 1.0 1
M   8 x 1.25 1
M   8 x 1.0 1
M   10 x 1.5 2
M   10 x 1.25 2
M   10 x 1.0 2
M   10 x 0.75 2
M   12 x 1.75 2
M   12 x 1.5 2
M   12 x 1.25 2
M   12 x 1.0 2
M   14 x 2.0 3
M   14 x 1.5 3
M   15 x 1.0 3
M   16 x 2.0 3
M   16 x 1.5 3
M   17 x 1.0 3
M   18 x 1.5 3
M   20 x 2.5 3
M   20 x 1.5 3
M   20 x 1.0 3
M   22 x 2.5 4
M   22 x 1.5 4
M   24 x 3.0 4
M   24 x 2.0 4
M   25 x 1.5 4
M   27 x 3.0 4
M   27 x 2.0 4
M   30 x 3.5 5
M   30 x 2.0 5
M   30 x 1.5 5
M   33 x 2.0 5
M   35 x 1.5 5
M   36 x 4.0 5
M   36 x 2.0 5
M   39 x 2.0 5-1/2

Inch

Nominal Size Handle Size
12 – 32 0
1/4 – 32 1
5/16 – 32 1
3/8 – 32 2
7/16 – 28 2
1/2 – 28 2
9/16 – 24 3
5/8 – 24 3
11/16 – 24 3
3/4 – 20 3
13/16 – 20 3
7/8 – 20 4
15/16 – 20 4
1 – 20 4
1-1/16 – 18 4
1-1/8 – 18 4
1-3/16 – 18 5
1-1/4 – 18 5
1-5/16 – 18 5
1-3/8 – 18 5
1-7/16 – 18 5
1-1/2 – 18 5

Class

2B, 3B

Graphitic Tool Steel

All thread gages are made of the finest oil hardened graphitic tool steel available. Because of the graphitic lubricant qualities in this steel, (which reduces friction) and high carbon content, it produces superior long wearing qualities.

Hard Chrome

All standard thread plugs are supplied in hard chrome at no additional cost.

  • Heat treated and cold treated for extreme stability.
  • Lapped for extra precision and longer wear.

Reversible Thread Plug Gage

reversible thread plug gage

Reversible Thread Plug Gage Manufacturer

CLASS X TOLERANCE – RH – CHROME

What are Reversible Thread Plug Gages Used For?

Reversible thread plug gages are used to check the accuracy and dimension of parts that require high tolerances and a need for great accuracy, such as those used in the medical, oil/gas and aerospace industries.

A thread plug gage measures the dimensions of a part by entering or not entering the internal thread (inside the hole of a part as required).The Go end should engage and the Not Go(NoGo) end should not engage the part.  This is known as fixed limit gaging.

Nominal Size Handle Size
.060   0 – 80 1W
.073   1 – 64 1W
.073   1 – 72 1W
.086   2 – 56 2W
.086   2 – 64 2W
.099   3 – 48 2W
.099   3 – 56 2W
.112   4 – 40 2W
.112   4 – 48 2W
.125   5 – 40 2W
.125   5 – 44 2W
.138   6 – 32 2W
.138   6 – 40 2W
.164   8 – 32 2W
.164   8 – 36 2W
.190   10 – 24 3W
.190   10 – 32 3W
.216   12 – 24 3W
.216   12 – 28 3W
1/4 – 20 3W
1/4 – 28 3W
5/16 – 18 4W
5/16 – 24 4W
3/8 – 16 4W
3/8 – 24 4W
7/16 – 14 5W
7/16 – 20 5W
1/2 – 13 5W
1/2 – 20 5W
9/16 – 12 6W
9/16 – 18 6W
5/8 – 11 6W
5/8 – 18 6W
3/4 – 10 7W
3/4 – 16 7W
Nominal Size Handle Size
M   1.6 x 0.35 1W
M   2 x 0.4 2W
M   2.5 x 0.45 2W
M   3 x 0.5 2W
M   3.5 x 0.6 2W
M   4 x 0.7 2W
M   5 x 0.8 3W
M   6 x 1.0 3W
M   8 x 1.25 4W
M   8 x 1.0 4W
M   10 x 1.5 4W
M   10 x 1.25 4W
M   10 x 1.0 4W
M   10 x 0.75 4W
M   12 x 1.75 5W
M   12 x 1.5 5W
M   2 x 1.25 5W
M   12 x 1.0 5W
M   14 x 2.0 6W
M   14 x 1.5 6W
M   15 x 1.0 6W
M   16 x 2.0 6W
M   16 x 1.5 6W
M   17 x 1.0 7W
M   18 x 1.5 7W

Inch

Nominal Size Handle Size
12 – 32 3W
1/4 – 32 3W
5/16 – 32 4W
3/8 – 32 4W
7/16 – 28 5W
1/2 – 28 5W
9/16 – 24 6W
5/8 – 24 6W
11/16 – 24 7W
3/4 – 20 7W

Class

2B, 3B

  • Graphitic tool steel for superior quality and longer wear
  • Heat treated and cold treated for extreme stability.
  • Lapped for extra precision and longer wear.

Hard Chrome

All standard thread plugs are supplied in hard chrome at no additional cost.

Trilock Thread Gage

trilock thread gage

Trilock Gage Manufacturer

CLASS X TOLERANCE – RH – CHROME

Nominal Size Handle Size
7/8 – 9 2-1/2
7/8 – 14 2-1/2
1 – 8 3-1/2
1 – 12 3-1/2
1 – 14 3-1/2
1-1/8 – 7 3-1/2
1-1/8 – 12 3-1/2
1-1/4 – 7 4-1/2
1-1/4 – 12 4-1/2
1-3/8 – 6 4-1/2
1-3/8 – 12 4-1/2
1-1/2 – 6 4-1/2
1-1/2 – 12 4-1/2
Nominal Size Handle Size
M   39 x 2.0 5-1/2

Inch

Nominal Size Handle Size
13/16 – 20 2-1/2
7/8 – 20 2-1/2
15/16 – 20 3-1/2
1 – 20 3-1/2
1-1/16 – 18 3-1/2
1-1/8 – 18 3-1/2
1-3/16 – 18 4-1/2
1-1/4 – 18 4-1/2
1-5/16 – 18 4-1/2
1-3/8 – 18 4-1/2
1-7/16 – 18 4-1/2
1-1/2 – 18 4-1/2

Class

2B, 3B

  • Graphitic tool steel for superior quality and longer wear
  • Heat treated and cold treated for extreme stability.
  • Lapped for extra precision and longer wear.

Hard Chrome

All standard thread plugs are supplied in hard chrome at no additional cost.

Thread Ring Gages

thread ring gauge

Thread Ring Gauge Manufacturer

CLASS X TOLERANCE – RH – STEEL

Nominal Size
.060   0 – 80
.073   1 – 64
.073   1 – 72
.086   2 – 56
.086   2 – 64
.099   3 – 48
.099   3 – 56
.112   4 – 40
.112   4 – 48
.125   5 – 40
.125   5 – 44
.138   6 – 32
.138   6 – 40
.164   8 – 32
.164   8 – 36
.190   10 – 24
.190   10 – 32
.216   12 – 24
216   12 – 28
1/4 – 20
1/4 – 28
5/16 – 18
5/16 – 24
3/8 – 16
3/8 – 24
7/16 – 14
7/16 – 20
1/2 – 13
1/2 – 20
9/16 – 12
9/16 – 18
5/8 – 11
5/8 – 18
3/4 – 10
3/4 – 16
7/8 – 9
7/8 – 14
1 – 8
1 – 12
1 – 14
1-1/8 – 7
1-1/8 – 12
1-1/4 – 7
1-1/4 – 12
1-3/8 – 6
1-3/8 – 12
1-1/2 – 6
1-1/2 – 12
Nominal Size
1.6 x 0.35
M   2 x 0.4
M   2.5 x 0.45
M   3 x 0.5
M   3.5 x 0.6
M   4 x 0.7
M   5 x 0.8
M   6 x 1.0
M   8 x 1.25
M   8 x 1.0
M   10 x 1.5
M   10 x 1.25
M   10 x 1.0
M   10 x 0.75
M   12 x 1.75
M   12 x 1.5
M   12 x 1.25
M   12 x 1.0
M   14 x 2.0
M   14 x 1.5
M   15 x 1.0
M   16 x 2.0
M   16 x 1.5
M   17 x 1.0
M   18 x 1.5
M   20 x 2.5
M   20 x 1.5
M   20 x 1.0
M   22 x 2.5
M   22 x 1.5
M   24 x 3.0
M   24 x 2.0
M   25 x 1.5
M   27 x 3.0
M   27 x 2.0
M   30 x 3.0
M   30 x 2.0
M   30 x 1.5
M   33 x 2.0
M   35 x 1.5
M   36 x 4.0
M   36 x 2.0
M   39 x 2.0

Inch

Nominal Size
12 – 32
1/4 – 32
5/16 – 32
3/8 – 32
7/16 – 28
1/2 – 28
9/16 – 24
5/8 – 24
11/16 – 24
3/4 – 20
13/16 – 20
7/8 – 20
15/16 – 20
1 – 20
1-1/16 – 18
1-1/8 – 18
1-3/16 – 18
1-1/4 – 18
1-5/16 – 18
1-3/8 – 18
1-7/16 – 18
1-1/2 – 18

Class

2A, 3A

Root Relieved Thread Ring Gages

Thread ring gages are root relieved for longer and more accurate gaging life. A root clearance at the major
diameter eliminates any possibility of interference from the full form of the setting plug and major diameter of
the part being checked. This gives assurance that flanks of thread are making proper contact.

  • Graphitic tool steel for superior quality and longer wear
  • Heat treated and cold treated for extreme stability.
  • Lapped for extra precision and longer wear.

Hard Chrome

Add 10% for hard chrome gages.

STI Gages

sti gauge

STI Thread Gage Manufacturer

R.H. FOR HELICAL COIL THREAD PLUG GAGE MEMBERS TAPERLOCK, FOR SCREW THREAD INSERT TYPE TAPPED HOLES

Inch

Nominal Size Handle Size
2 – 56 00
2 – 64 00
3 – 48 00
3 – 56 00
4 – 40 00
4 – 48 00
5 – 40 0
6 – 32 0
6 – 40 0
8 – 32 0
8 – 36 0
10 – 24 0
10 – 32 0
12 – 24 1
1/4 – 20 1
1/4 – 28 1
5/16 – 18 2
5/16 – 24 1
3/8 – 16 2
3/8 – 24 2
7/16 – 14 3
7/16 – 20 3
1/2 – 13 3
1/2 – 20 3
9/16 – 12 3
9/16 – 18 3
5/8 – 11 3
5/8 – 18 3
3/4 – 10 4
3/4 – 16 3

What is STI Thread Gage?

STI gages are used to gage threads after tapping prior to insertion of Helical Coil Wire inserts. Gage Assembly makes STI gages in class 2B or class 3B.

Class

2B, 3B

Set Plug Gages

setting plug gage

Truncated Set Plug Gage Manufacturer

CLASS W TOLERANCE PITCH DIAMETER, CLASS W TOLERANCE ON LEAD & ANGLE – RH – STEEL

Nominal Size Handle Size
.060   0 – 80 000
.073   1 – 64 000
.073   1 – 72 000
.086   2 – 56 000
.086   2 – 64 000
.099   3 – 48 000
.099   3 – 56 000
112   4 – 40 00
.112   4 – 48 00
.125   5 – 40 00
.125   5 – 44 00
.138   6 – 32 00
.138   6 – 40 00
.164   8 – 32 0
.164   8 – 36 0
.190   10 – 24 0
.190   10 – 32 0
.216   12 – 24 0
.216   12 – 28 0
1/4 – 20 1
1/4 – 28 1
5/16 – 18 1
5/16 – 24 1
3/8 – 16 2
3/8 – 24 2
7/16 – 14 2
7/16 – 20 2
1/2 – 13 2
1/2 – 20 2
9/16 – 12<