Made in Japan
Manufacturer: Eisen Co., Ltd.
Model: SPM Series
Metric thread plug gauge (steel thread gauge)
About the Series
Example of notation, Plug gauge
Example of notation, For wear inspection
Metric thread nominal and pitch list
| Thread Nominal | Regular pitch | Fine pitch | | Thread Nominal | Regular pitch | Fine pitch |
|---|
| M1 | 0.25 | 0.2 | | | | M27 | 3 | *2 | 1.5 | *1 | | |
| M1.1 | *0.25 | *0.2 | | | | M28 | | 2 | 1.5 | 1 | ▲0.5 | |
| M1.2 | 0.25 | 0.2 | | | | M30 | 3.5 | *3 | 2 | 1.5 | 1 | ▲0.5 |
| M1.4 | 0.3 | 0.2 | | | | M32 | | | 2 | 1.5 | ▲1 | ▲0.5 |
| M1.6 | *0.35 | *0.2 | | | | M33 | 3.5 | *3 | *2 | 1.5 | | |
| M1.7 | ▽0.35 | ▲0.2 | | | | M34 | | | ▲2 | ▲1.5 | ▲1 | ▲0.5 |
| M1.8 | *0.35 | *0.2 | | | | M35 | | | | 1.5 | | |
| M2 | 0.4 | 0.25 | | | | M36 | Four | *3 | 2 | 1.5 | ▲1 | ▲0.5 |
| M2.2 | *0.45 | *0.25 | | | | M38 | | | ▲2 | 1.5 | ▲1 | ▲0.5 |
| M2.3 | ▽0.4 | ▲0.25 | | | | M39 | Four | *3 | *2 | *1.5 | | |
| M2.5 | *0.45 | *0.35 | | | | M40 | | *3 | 2 | 1.5 | ▲1 | |
| M2.6 | ▽0.45 | ▲0.35 | | | | M42 | 4.5 | *Four | *3 | 2 | 1.5 | ▲1 |
| M3 | *0.5 | | | | | M45 | 4.5 | *Four | *3 | 2 | 1.5 | ▲1 |
| M3 | ▲0.6 | 0.35 | | | | M48 | Five | *Four | *3 | 2 | 1.5 | ▲1 |
| M3.5 | 0.6 | 0.35 | | | | M50 | | | *3 | 2 | 1.5 | ▲1 |
| M4 | *0.7 | | | | | M52 | *Five | *Four | *3 | 2 | 1.5 | |
| M4 | ▲0.75 | 0.5 | | | | M55 | | *Four | *3 | 2 | 1.5 | |
| M4.5 | 0.75 | 0.5 | | | | M56 | *5.5 | *Four | *3 | *2 | *1.5 | |
| M5 | *0.8 | | | | | M58 | | *Four | *3 | 2 | 1.5 | |
| M5 | ▲0.9 | 0.5 | | | | M60 | *5.5 | *Four | *3 | 2 | 1.5 | |
| M5.5 | ▲0.9 | 0.5 | | | | M62 | | *Four | *3 | 2 | 1.5 | |
| M6 | 1 | 0.75 | ▲0.5 | | | M64 | *6 | *Four | *3 | *2 | *1.5 | |
| M7 | 1 | 0.75 | ▲0.5 | | | M65 | | *Four | *3 | 2 | 1.5 | |
| M8 | 1.25 | 1 | 0.75 | ▲0.5 | | M68 | *6 | *Four | *3 | 2 | 1.5 | |
| M9 | 1.25 | 1 | 0.75 | ▲0.5 | | M70 | | *6 | *Four | *3 | 2 | 1.5 |
| M10 | 1.5 | 1.25 | 1 | *0.75 | ▲0.5 | M72 | | *6 | *Four | *3 | 2 | 1.5 |
| M11 | *1.5 | ▲1.25 | 1 | *0.75 | ▲0.5 | M75 | | | *Four | *3 | 2 | 1.5 |
| M12 | 1.75 | 1.5 | *1.25 | 1 | ▲0.5 | M76 | | *6 | *Four | *3 | *2 | *1.5 |
| M13 | | ▲1.5 | | ▲1 | ▲0.5 | M78 | | | | | 2 | ▲1.5 |
| M14 | 2 | 1.5 | *1.25 | 1 | ▲0.5 | M80 | | *6 | *Four | *3 | 2 | 1.5 |
| M15 | | 1.5 | | 1 | ▲0.5 | M82 | | | | | 2 | ▲1.5 |
| M16 | 2 | 1.5 | | 1 | ▲0.5 | M85 | | *6 | *Four | *3 | 2 | ▲1.5 |
| M17 | | *1.5 | | *1 | | M88 | | | | | ▲2 | ▲1.5 |
| M18 | 2.5 | 2 | 1.5 | 1 | ▲0.5 | M90 | | *6 | *Four | *3 | 2 | ▲1.5 |
| M20 | 2.5 | 2 | 1.5 | 1 | ▲0.5 | M92 | | | | | ▲2 | ▲1.5 |
| M22 | 2.5 | 2 | 1.5 | 1 | ▲0.5 | M95 | | *6 | *Four | *3 | 2 | ▲1.5 |
| M24 | 3 | 2 | 1.5 | 1 | ▲0.5 | M98 | | | | | ▲2 | ▲1.5 |
| M25 | | 2 | 1.5 | 1 | ▲0.5 | M100 | | *6 | *Four | *3 | 2 | ▲1.5 |
| M26 | | ▲2 | 1.5 | ▲1 | ▲0.5 | | | | | | | |
- Note) *: Adopted by ISO ▲: Abolished in March 1968 (old JIS) ▽: Abolished in June 1997 (old JIS)
