For TradeMax Tap Holders with Safety Clutch
A list of available tap holders is provided below.
If you do not know what size tap holder your tapping machine uses, a list of machines is provided further down this page (or you can click the shortcut links). Machine Types: Pneumatic, Pneumatic Hand Tools, Hydraulic and Electric.
Find your machine model in the list below. The tap holder size (TCS1B, TCS2B, TCS3B or TCS4B) is also provided together with a link to the relevant tapping machine on our website.
Confused? Call the staff and Radius Benders for assistance.
Tap Holder Features:
- Taps can be changed quickly without additional tooling (In the case of (FIX) type taps you will require an allen key);
- A different tap holder is required for each tap shank size;
- Tap shanks should have a minimum hardness of HRC 40;
- The adjustable safety clutch protects against the breakage of worn taps and when the tap bottoms;
- Tap holders with safety clutch, for use with left hand taps, are available on request; and
- Tapping depth can be set off the machine.
Industry Standards
| JIS | DIN |
| ISO | ANSI (USA) |
Tap Holder Sizes
| TCS1B TCS1B(FIX) | TCS2B TCS2B(FIX) |
| TCS3B TCS3B(FIX) | TCS4B TCS3B(FIX) |
Reducing Adaptors
| TRE2/1 - Use a TCS1B tap holder in a TCS2B machine | TRE3/2 - Use a TCS2B tap holder in a TCS3B machine |
| TRE4/2 - Use a TCS2B tap holder in a TCS4B machine | TRE4/3 - Use a TCS3B tap holder in a TCS4B machine |
JIS
| Metric | UNC | Dimension | Adaptor TCS_ | |||
| Dia Ø | Square | 1B | 2B | 3B | ||
| M2 | 3 | 2.5 | X | |||
| M3 | 4 | 3.2 | X | |||
| M4 M4.5 | 5 | 4 | X | |||
| M5 M5.5 | 5.5 | 4.5 | X | |||
| M6 | W 1/4 | 6 | 4.5 | X | X | |
| W 5/16 | 6.1 | 5 | X | X | ||
| M8 M7 | 6.2 | 5 | X | X | ||
| M10 M9 | W 3/8 | 7 | 5.5 | X | X | |
| M11 | W 7/16 | 8 | 6 | X | X | |
| M12 | 8.5 | 6.5 | X | X | ||
| W 1/2 | 9 | 7 | X | X | ||
| M14 M15 | W 9/16 | 10.5 | 8 | X | X | |
| W 5/8 | 12 | 9 | X | |||
| M16 | 12.5 | 10 | X | X | ||
| M17 | 13 | 10 | X | X | ||
| M18 | W 3/4 | 14 | 11 | X | X | |
| M20 | 15 | 12 | X | X | ||
| M22 | W 7/8 | 17 | 13 | X | X | |
| M24 M25 | 19 | 15 | X | X | ||
| M26 M27 | W 1 | 20 | 15 | X | X | |
| M28 | 21 | 17 | X | X | ||
| W 1 1/8 | 22 | 17 | X | X | ||
| M30 | 23 | 17 | X | X | ||
| M32 | W 1 1/4 | 24 | 19 | X | ||
| M33 | 25 | 19 | X | |||
| M34 M35 | W 1 3/8 | 26 | 21 | X | ||
| M36 M38 | 28 | 21 | X | |||
| M39 M40 | W1 1/2 | 30 | 23 | X | ||
| M42 | W 1 5/8 | 32 | 26 | X | ||
| M45 | W 1 3/4 | 35 | 26 | |||
| M48 | W 1 7/8 | 38 | 29 | |||
| PT | PF | Dimension | Adaptor TCS_ | |||
Dia Ø | Square | 1B | 2B | 3B | ||
| 1/8 | 1/8 | 8 | 6 | |||
| 1/4 | 1/4 | 11 | 9 | |||
| 3/8 | 3/8 | 14 | 11 | |||
| 1/2 | 1/2 | 18 | 14 | |||
| 5/8 | 19 | 15 | ||||
| 3/4 | 3/4 | 23 | 17 | |||
| 7/8 | 24 | 19 | ||||
| 1 | 1 | 26 | 21 | |||
| 1 1/8 | 28 | 21 | ||||
| 1 1/4 | 1 1/4 | 32 | 26 | |||
| 1 3/8 | 1 3/8 | 35 | 26 | |||
| 1 1/2 | 1 1/2 | 38 | 29 | |||
DIN
Dimension Dia Ø × Square | DIN 352 | DIN 371 | Adaptor TCS_ | |
| 1B | 2B | |||
| 2.5×2.1 | M1 | M1 | ||
| M1.1 | M1.1 | |||
| M1.2 | M1.2 | |||
| M1.4 | M1.4 | |||
| M1.6 | M1.6 | |||
| M1.8 | M1.8 | |||
| 2.8×2.1 | M2 | M2 | X | |
| M2.2 | M2.2 | X | ||
| M2.5 | M2.5 | X | ||
| 3.5×2.7 | M3 | M3 | X | |
| 4×3 | M3.5 | M3.5 | X | |
| 4.5×3.4 | M4 | M4 | X | |
| 6×4.9 | M5 | M5 | X | X |
| M6 | M6 | X | X | |
| M8 | X | X | ||
| 7×5.5 | M10 | X | X | |
| 8×6.2 | M8 | X | X | |
| 9×7 | M12 | X | X | |
| 10×8 | M10 | X | ||
| 11×9 | M14 | X | ||
| 12×9 | M16 | X | ||
| 14×11 | M18 | X | ||
| 16×12 | M20 | X | ||
| 18×14.5 | M22 | X | ||
| M24 | X | |||
| 20×16 | M27 | X | ||
| 22×18 | M30 | X | ||
| 25×20 | M33 | |||
| 28×22 | M36 | |||
| 32×24 | M39 | |||
| M42 | ||||
| 36×29 | M45 | |||
| M48 | ||||
| 40×32 | M52 | |||
| 45×35 | M56 | |||
ISO
Dimension Dia Ø × Square | Metric | ISO 529 Metric | Adaptor TCS_ | |
| 1B | 2B | |||
| 2.24x1.8 | M3 | |||
2.5x2.0 | M3.5 | M2 | X | |
| 2.8x2.24 | M2.2 | X | ||
| M2.5 | X | |||
| 3.15x2.5 | M4 | M3 | X | |
| 3.55x2.8 | M4.5 | M3.5 | X | |
| 4x3.15 | M5 | M4 | X | |
| 4.5x3.55 | M6 | X | ||
| 5x4 | M5 | X | ||
| 5.6x4.5 | X | |||
| 6.3x5 | M8 | M6 | X | X |
| 8x6.3 | M10 | M8 | X | X |
| 9x7.1 | M12 | X | X | |
| 10x8 | M10 | X | X | |
| 11.2x9 | M14 | X | ||
| 12.5x10 | M16 | X | ||
| 14x11.2 | M18 | X | ||
| M20 | X | |||
| 16x12.5 | M22 | X | ||
| 18x14 | M24 | X | ||
| 20x16 | M27 | X | ||
| M30 | X | |||
| 22.4x18 | M33 | |||
| 25x20 | M36 | |||
| 28x22.4 | M39 | |||
| M42 | ||||
| 31.5x25 | M45 | |||
| M48 | ||||
| 35.5x28 | M52 | |||
| M56 | ||||
| 40x31.5 | M60 | |||
| M64 | ||||
ANSI (USA)
Dimension | Machine Screw Size No. | Nominal Factional Diameter Inches | Adaptor TCS_ | ||
| Shank | Square | 1B | 2B | ||
| 0.141 | 0.110 | 0 | 1/16 | X | |
| 0.141 | 0.110 | 1 | X | ||
| 0.141 | 0.110 | 2 | X | ||
| 0.141 | 0.110 | 3 | 3/32 | X | |
| 0.141 | 0.110 | 4 | X | ||
| 0.141 | 0.110 | 5 | 1/8 | X | |
| 0.141 | 0.110 | 6 | X | ||
| 0.168 | 0.131 | 8 | 5/32 | X | |
| 0.194 | 0.152 | 10 | 3/16 | X | |
| 0.220 | 0.165 | 12 | X | ||
| 0.255 | 0.191 | 14 | 1/4 | X | X |
| 0.318 | 0.238 | 5/16 | X | X | |
| 0.381 | 0.286 | 3/8 | X | X | |
| 0.323 | 0.242 | 7/16 | X | X | |
| 0.367 | 0.275 | 1/2 | X | X | |
| 0.429 | 0.322 | 9/16 | X | ||
| 0.480 | 0.360 | 5/8 | X | ||
| 0.542 | 0.406 | 11/16 | X | ||
| 0.590 | 0.442 | 3/4 | X | ||
| 0.652 | 0.489 | 13/16 | X | ||
| 0.697 | 0.523 | 7/8 | X | ||
| 0.760 | 0.570 | 15/16 | |||
| 0.800 | 0.600 | 1 | |||
| 0.895 | 0.672 | 11/16 | |||
| 0.896 | 0.672 | 11/8 | |||
| 1.021 | 0.766 | 13/16 | |||
| 1.021 | 0.766 | 11/4 | |||
| 1.108 | 0.831 | 15/16 | |||
| 1.108 | 0.831 | 13/8 | |||
| 1.233 | 0.925 | 17/16 | |||
| 1.233 | 0.925 | 11/2 | |||
| 1.305 | 0.979 | 15/8 | |||
| 1.430 | 1.072 | 13/4 | |||
| 1.519 | 1.139 | 17/8 | |||
| 1.644 | 1.233 | 2 | |||
| 0.3125 | 0.234 | 1/16 NPT | |||
| 0.4375 | 0.328 | 1/8 NPT | |||
| 0.5625 | 0.421 | 1/4 NPT | |||
| 0.700 | 0.531 | 3/8 NPT | |||
| 0.6875 | 0.515 | 1/2 NPT | |||
| 0.9063 | 0.679 | 3/4 NPT | |||
| 1.125 | 0.843 | 1" NPT | |||
| 1.3125 | 0.984 | 11/4 NPT | |||
| 1.500 | 1.125 | 11/2 NPT | |||
List of TradeMax Tapping Machines
Below is a list of all the TradeMax Tapping Machines (including models no longer available) and the size of the tap holder.
Pneumatic Tapping Machines
| Model | Tap Holder TCS_ |
| AQ-08-950 | 1B |
| AQ-12-950 | 1B |
| AQ-16-950 | 2B |
| AQ-20-1000 | 2B |
| AQ-22-1000 | 2B |
| AQ-24-1000 | 2B |
| AQ-27-1000 | 2B |
| AQ-30-1000 | 2B |
| AR-16 | 2B |
| AR-20 | 2B |
| AR-22 | 2B |
| AR-24 | 2B |
| AR-27 | 2B |
| AR-30 | 2B |
| AS-08 / II | 1B |
| AS-12 / II | 1B |
| AS-16 / II | 2B |
| AS-20 / II | 2B |
| AS22 / II | 2B |
| AS24 / II | 2B |
| AS-27 / II | 2B |
| AS-30 / II | 2B |
| AT-08 / I | 1B |
| AT-12 / I | 1B |
| AT-16 / I | 2B |
| AT-20 / I | 2B |
| AT-22 / I | 2B |
| AT-24 / I | 2B |
| AT-27 / I | 2B |
| AT-30 / I | 2B |
| AT-08 / II | 1B |
| AT-12 / II | 1B |
| AT-16 / II | 2B |
| AT-20 / II | 2B |
| AT-22 / II | 2B |
| AT-24 / II | 2B |
| AT-27 / II | 2B |
| AT-30 / II | 2B |