Reversible ratchet torque insert tool 9x12 mm 30 teeth with QuickRelease safety lock size 1/2 inch
Reversible ratchet torque insert tools 14 x 18 mm 32 teeth with quick-release max tighten torque 300 Nm effective length 38.5 mm square drive size 1/2 inch
Torque insert tools 9x12 mm for welding special tools made of 31CRV3 gunmetal finish welding dimensions 8x14 mm length 8 mm
Reversible ratchet torque insert tools 14 x 18 mm 32 teeth max tighten torque 300 Nm effective length 38.5 mm square drive size 1/2 inch
Open ended wrench torque insert tools 14x18 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 32.5 mm size 38 mm
Open ended wrench torque insert tools 14x18 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 32.5 mm size 36 mm
Increaser adapter torque insert tools length 55 mm increase from 9×12 mm to 14×18 mm
Open-ended torque insert tools 16 mm spigot connector made of high quality steel hardened, chrome finished effective length 32.0 mm max torque 190 Nm size 21 mm
Open-ended torque insert tools 14x18 mm with spring-loaded retractable pin made of high quality steel hardened, chrome finished effective length 40.0 mm max torque 360 Nm size 35 mm
Open end wrench torque insert tools 9 x 12 mm made of high quality steel chrome-plated max tighten torque 64.0 Nm effective length 20.0 mm size 14 mm
Reversible ratchet torque insert tools 14x18 mm with fine tooth 60 teeth maximum load capacity up to 400 Nm size 3/4 inch
Reversible ratchet torque insert tools 9x12 mm 22 teeth maximum load capacity up to 40 Nm square drive size 1/4 inch
Reversible ratchet torque insert tools 14 x 18 mm low profile 40 teeth max tighten torque 200 Nm effective length 36.0 mm square drive size 3/8 inch
Self-setting insert spanner covers all metric and imperial dimensions and is compatible with wrench sizes 16-19 mm, 9x12 mm square head mounting with ratchet feature ensures fast and consistent screwdriving without the need to remove the tool
Self-setting insert spanner covers all metric and imperial dimensions and is compatible with wrench sizes 13-16 mm, 9x12 mm square head mounting with ratchet feature ensures fast and consistent screwdriving without the need to remove the tool
Self-setting insert spanner covers all metric and imperial dimensions and is compatible with wrench sizes 10-13 mm, 9x12 mm square head mounting with ratchet feature ensures fast and consistent screwdriving without the need to remove the tool
Self-setting insert spanner covers all metric and imperial dimensions and is compatible with wrench sizes 32-41 mm, 14x18 mm square head mounting with ratchet feature ensures fast and consistent screwdriving without the need to remove the tool
Insert adaptor for torque insert square drive 14 x 18 mm to 24.5 x 28 mm effective length 95.9 mm
Insert adaptor for torque insert square drive 22 x 28 mm to 24.5 x 28 mm effective length 100 mm
Shell adaptor internal square drive 24.5x28 mm to 14x18 mm effective length 70 mm maximum torque 650 Nm
Torque insert adaptor 14x18 mm for use with a lateral dovetail profile effective length 34.6 mm External square drive 9.5 x 31.5 mm
Torque insert adaptor 9x12 mm for use with a lateral dovetail profile effective length 24 mm External square drive 9.5 x 23.5 mm
Torque insert tools 22x28 mm for welding special tools made of 31CRV3 gunmetal finish welding dimensions 15x50 mm length 24 mm
Torque insert tools 14x18 mm for welding special tools made of 31CRV3 gunmetal finish welding dimensions 11x25 mm length 12 mm
Ring wrench torque insert tools 14x18 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 28 mm size 34 mm
Ratchet torque insert tools 22x28 mm 30 teeth maximum load capacity up to 1000 Nm effective length 55 mm push through square drive size 3/4 inch
Bit holder torque insert tools 9x12 mm effective length 17.5 mm with a collar-thrust spring for screwdriver bits hexagon size 1/4 inch
Ratchet wrench 30 teeth torque insert tools 24.5x28 mm made of wear-resistant HPQ heavy-duty steel effective length 95 mm push through square drive size 3/4 inch
Calibrating square drive wrench torque insert tools 22x28 mm without a ball or pin lock (not suitable for bolt tightening) effective length 55 mm drive square size 3/4 inch
Calibrating square drive wrench torque insert tools 14x18 mm without a ball or pin lock (not suitable for bolt tightening) effective length 25 mm drive square size 3/4 inch
Calibrating square drive wrench torque insert tools 14x18 mm without a ball or pin lock (not suitable for bolt tightening) effective length 25 mm drive square size 1/2 inch
Calibrating square drive wrench torque insert tools 14x18 mm without a ball or pin lock (not suitable for bolt tightening) effective length 25 mm drive square size 3/8 inch
Calibrating square drive wrench torque insert tools 9x12 mm without a ball or pin lock (not suitable for bolt tightening) effective length 17.5 mm drive square size 3/8 inch
Calibrating square drive wrench torque insert tools 9x12 mm without a ball or pin lock (not suitable for bolt tightening) effective length 17.5 mm drive square size 1/4 inch
Square drive wrench torque insert tools 22x28 mm made of wear-resistant HPQ heavy-duty steel gun metal finish effective length 55 mm drive square size 3/4 inch
Square drive wrench torque insert tools 24.5x28 mm made of wear-resistant HPQ heavy-duty steel gun metal finish effective length 95 mm drive square size 3/4 inch
Square drive wrench torque insert tools 9x12 mm chromium over nickel finish maximum torque 80 Nm effective length 17.5 mm drive square size 3/8 inch
Square drive wrench torque insert tools 9x12 mm chromium over nickel finish maximum torque 40 Nm effective length 17.5 mm drive square size 1/4 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 3/4 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 11/16 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 5/8 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 9/16 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 1/2 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 7/16 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 3/8 inch
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 20 mm size 21 mm
Open ring wrench torque insert tools 9x12 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 17.5 mm size 18 mm
External Torx wrench torque insert tools 14x18 mm Drop-forged hardened and cooled in oil with chromium over nickel finish effective length 25 mm size E24
Interchangeable Torque Insert Tools & Insert Heads for Open-Head Torque Wrenches
Explore ConnexTool's extensive 795-piece range of torque insert tools — interchangeable heads engineered by Stahlwille, Hazet, Wera, and Bahco to fit standard insert-type (headless) torque wrenches. Available across eight standardized insert-square sizes from 9x12 mm up to 27x36 mm, plus round R16 mm and R22 mm profiles, these heads let a single calibrated wrench body serve dozens of drive, ring, open-end, and specialty fastening configurations without the cost of multiple complete tools.
Standardized Insert-Square Interfaces, Reversible Ratchet Geometry & Size-Converter Adapters
Insert tools in this category share a standardized rectangular insert-square profile that locks securely into any matching open-head torque wrench or torque multiplier, decoupling the calibrated drive mechanism from the fastening interface entirely. Reversible ratchet heads such as Stahlwille's 725/735/737 series and Hazet's 6404 range are available with tooth counts from 22 to 60, where a finer tooth pitch reduces the swing arc needed to re-engage the ratchet in confined spaces. Open-end, ring, and split-ring insert heads (Stahlwille's 731/732/733 series, Bahco's 147/167 spigot profiles) suit applications where a socket cannot reach the fastener, while Wera's self-adjusting Joker heads cover a spanning range of metric and imperial sizes in a single unit. Size-converter adapters — such as Stahlwille's 7370 series — allow a wrench fitted for one insert square to accept heads of a different size, and dedicated calibration heads without ball-lock retention support laboratory torque verification rather than field fastening.
A Comprehensive Blueprint of Torque Insert Head Configurations
Our catalog spans every head profile and insert-square size for open-head torque wrench systems:
- ✔ Reversible Ratchet Insert Heads: Stahlwille 725/735/737 and Hazet 6404 series with tooth counts from 22 to 60, spanning 9x12 mm to 24.5x28 mm insert squares for confined-space applications.
- ✔ Open-End, Ring & Split-Ring Insert Heads: Stahlwille's 731/732/733 series and Bahco's 147/167 spigot-profile heads, reaching fasteners that socket-type heads cannot access.
- ✔ Self-Adjusting & Torx-Profile Insert Heads: Wera's Joker self-adjusting heads covering a size range in one unit, plus Stahlwille's 732TX Torx-profile heads for E-type fastener geometries.
- ✔ Size-Converter Adapters & Calibration Heads: Stahlwille's 7370 series for cross-size compatibility between insert squares, and 734K calibration heads without ball-lock retention for lab-grade torque verification.
Invest in professional-grade torque systems at ConnexTool, featuring 100% authentic inventory sourced directly from authorized European tool repositories.
