Electronic Interchangeable Head Torque Wrenches and Accessories
Proto® Electronic Interchangeable Head Torque Wrenches
- Full interface with Proto® Interchangeable Head Attachments.
- Accuracy of +/- 2% of indicated value in both clockwise and counter clockwise directions.
- Broad accuracy range extends from 10% to 100% of Full Scale to help reduce the number of torque wrenches required.
- Ninety-nine “on-board” memory storage locations help improve efficiency when taking multiple torque readings.
- Three units of measure are available (Ft-lb, In-lb, and Nm).
- Three operating modes: Track Mode, Peak Hold and Auto Clear.
- Fast sampling rate helps maintain high accuracy during torque applications.
- Torque wrench head rotates to allow for easy viewing of LCD display.
- Easy to read LCD Display with large digits.
- 3-way Red/Green/Yellow lights.
- Yellow light appears at the low end of the zone.
- Green light appears and buzzer sounds when the target is reached.
- Red light appears with intermittent buzzer when it is over torqued.
- Audible buzzer helps identify when desired torque target zones are approaching and met.
- Target torque zone is adjustable from 1% to 10% of targeted torque value.
- Meets or exceeds ASME B107.28
| Part No. | Torque Range Ft. Lbs. | Torque Range In. Lbs. | Increments In. Lbs. | Increments Ft. Lbs. | Drive Size | Torque Range NM |
| JH4-250 | 2.1-20.8 | 25-250 | 0.1 | 0.01 | 1/4" | 2.8-28.2 |
| JH5-100F | 10-100 | 20-1200 | 1 | 0.1 | 3/8" | 13.6-135.6 |
| JH7-250F | 25-250 | 300-3000 | 1 | 0.1 | 1/2" | 33.9-338.9 |
Proto® Ratchet Torque Wrench Heads – H4 Tang
- Fixed ratcheting head with a robust 24 tooth design with 15° arc swing
- Alloy steel drive gear for strength and durability
- Low profile for easy access
- Reversing lever design for quick, one handed operation
| Part No. | Drive Size | Width | Height | Length |
| JH4-14R | 1/4" | 1-1/16" | 23/32" | 3-1/4" |
| JH5-38R | 3/8" | 1-7/16" | 1" | 4-3/32" |
| JH7-12R | 1/2" | 1-27/32" | 1-13/32" | 5-7/8" |
Proto® Open End Torque Wrench Heads – H4 Tang
- Open end is angled to 15º to help keep shank clear of obstructions helping to improve access
| Part No. | Size In. | Size Metric |
| JH4-12 | 3/8" | -- |
| JH4-14 | 7/16" | -- |
| JH4-16 | 1/2" | -- |
| JH4-18 | 9/16" | -- |
| JH4-10M | -- | 10mm |
| JH4-11M | -- | 11mm |
| JH4-12M | -- | 12mm |
| JH4-13M | -- | 13mm |
| JH4-14M | -- | 14mm |
Proto® Box End Torque Wrench Heads – H4 Tang
- The Proto® TorquePlus™ Design, a high performance drive configuration which allows for quick and easy wrench engagement with the fastener flats, not the corners
- 12 point box end allows for fine indexing, helping to improve speed and access
- Fits 4, 6 and 12 point fasteners
- Indexed to 7.5º to help keep shank clear of obstructions by allowing the user to flip the wrench over to continue turning the fastener
- Countersunk on both sides to allow for easy application to the fastener
| Part No. | Size In. | Size Metric |
| JH4-12B | 3/8" | -- |
| JH4-14B | 7/16" | -- |
| JH4-16B | 1/2" | -- |
| JH4-18B | 9/16" | -- |
| JH4-10MB | -- | 10mm |
| JH4-11MB | -- | 11mm |
| JH4-12MB | -- | 12mm |
| JH4-13MB | -- | 13mm |
| JH4-14MB | -- | 14mm |
Proto® Open End Torque Wrench Heads – H5 Tang
- Open end is angled to 15º to help keep shank clear of obstructions helping to improve access
| Part No. | Size In. | Size Metric |
| JH5-14 | 7/16" | -- |
| JH5-16 | 1/2" | -- |
| JH5-18 | 9/16" | -- |
| JH5-20 | 5/8" | -- |
| JH5-22 | 11/16" | -- |
| JH5-24 | 3/4" | -- |
| JH5-26 | 13/16" | -- |
| JH5-28 | 7/8" | -- |
| JH5-11M | -- | 11mm |
| JH5-12M | -- | 12mm |
| JH5-13M | -- | 13mm |
| JH5-14M | -- | 14mm |
| JH5-15M | -- | 15mm |
| JH5-16M | -- | 16mm |
| JH5-17M | -- | 17mm |
| JH5-18M | -- | 18mm |
| JH5-19M | -- | 19mm |
| JH5-20M | -- | 20mm |
| JH5-21M | -- | 21mm |
| JH5-22M | -- | 22mm |
| JH5-23M | -- | 23mm |
Proto® Box End Torque Wrench Heads – H5 Tang
- The Proto® TorquePlus™ Design, a high performance drive configuration which allows for quick and easy wrench engagement with the fastener flats, not the corners
- 12 point box end allows for fine indexing, helping to improve speed and access
- Fits 4, 6 and 12 point fasteners
- Indexed to 7.5º to help keep shank clear of obstructions by allowing the user to flip the wrench over to continue turning the fastener
- Countersunk on both sides to allow for easy application to the fastener
| Part No. | Size In. | Size Metric |
| JH5-14B | 7/16" | -- |
| JH5-16B | 1/2" | -- |
| JH5-18B | 9/16" | -- |
| JH5-20B | 5/8" | -- |
| JH5-22B | 11/16" | -- |
| JH5-24B | 3/4" | -- |
| JH5-26B | 13/16" | -- |
| JH5-28B | 7/8" | -- |
| JH5-11MB | -- | 11mm |
| JH5-12MB | -- | 12mm |
| JH5-13MB | -- | 13mm |
| JH5-14MB | -- | 14mm |
| JH5-15MB | -- | 15mm |
| JH5-16MB | -- | 16mm |
| JH5-17MB | -- | 17mm |
| JH5-18MB | -- | 18mm |
| JH5-19MB | -- | 19mm |
| JH5-20MB | -- | 20mm |
| JH5-21MB | -- | 21mm |
| JH5-22MB | -- | 22mm |
| JH5-23MB | -- | 23mm |
Proto® Open End Torque Wrench Heads – H7 Tang
- Open end is angled to 15º to help keep shank clear of obstructions helping to improve access
| Part No. | Size In. | Size Metric |
| JH7-18 | 9/16" | -- |
| JH7-20 | 5/8" | -- |
| JH7-22 | 11/16" | -- |
| JH7-24 | 3/4" | -- |
| JH7-26 | 13/16" | -- |
| JH7-28 | 7/8" | -- |
| JH7-30 | 15/16" | -- |
| JH7-32 | 1" | -- |
| JH7-34 | 1-1/16" | -- |
| JH7-36 | 1-1/8" | -- |
| JH7-38 | 1-3/16" | -- |
| JH7-40 | 1-1/4" | -- |
| JH7-42 | 1-5/16" | -- |
| JH7-44 | 1-3/8" | -- |
| JH7-15M | -- | 15mm |
| JH7-16M | -- | 16mm |
| JH7-17M | -- | 17mm |
| JH7-18M | -- | 18mm |
| JH7-19M | -- | 19mm |
| JH7-20M | -- | 20mm |
| JH7-21M | -- | 21mm |
| JH7-22M | -- | 22mm |
| JH7-23M | -- | 23mm |
| JH7-24M | -- | 24mm |
| JH7-25M | -- | 25mm |
| JH7-26M | -- | 26mm |
| JH7-27M | -- | 27mm |
| JH7-28M | -- | 28mm |
| JH7-29M | -- | 29mm |
| JH7-30M | -- | 30mm |
| JH7-32M | -- | 32mm |
Proto® Box End Torque Wrench Heads – H7 Tang
- The Proto® TorquePlus™ Design, a high performance drive configuration which allows for quick and easy wrench engagement with the fastener flats, not the corners
- 12 point box end allows for fine indexing, helping to improve speed and access
- Fits 4, 6 and 12 point fasteners
- Indexed to 7.5º to help keep shank clear of obstructions by allowing the user to flip the wrench over to continue turning the fastener
- Countersunk on both sides to allow for easy application to the fastener
| Part No. | Size In. | Size Metric |
| JH7-18B | 9/16" | -- |
| JH7-20B | 5/8" | -- |
| JH7-22B | 11/16" | -- |
| JH7-24B | 3/4" | -- |
| JH7-26B | 13/16" | -- |
| JH7-28B | 7/8" | -- |
| JH7-30B | 15/16" | -- |
| JH7-32B | 1' | -- |
| JH7-34B | 1-1/16" | -- |
| JH7-36B | 1-1/8" | -- |
| JH7-38B | 1-3/16" | -- |
| JH7-40B | 1-1/4" | -- |
| JH7-42B | 1-5/16" | -- |
| JH7-44B | 1-3/8" | -- |
| JH7-15MB | -- | 15mm |
| JH7-16MB | -- | 16mm |
| JH7-17MB | -- | 17mm |
| JH7-18MB | -- | 18mm |
| JH7-19MB | -- | 19mm |
| JH7-20MB | -- | 20mm |
| JH7-21MB | -- | 21mm |
| JH7-22MB | -- | 22mm |
| JH7-23MB | -- | 23mm |
| JH7-24MB | -- | 24mm |
| JH7-25MB | -- | 25mm |
| JH7-26MB | -- | 26mm |
| JH7-27MB | -- | 27mm |
| JH7-28MB | -- | 28mm |
| JH7-29MB | -- | 29mm |
| JH7-30MB | -- | 30mm |
| JH7-32MB | -- | 32mm |
- Contact Heavy Maintenance Supply 205-384-5284 for more information
