Mountz bit holders are manufactured from 17-4 stainless steel to deliver high strength, corrosion resistance, and long-term durability in precision torque applications. Designed for seamless integration with Mountz TBIH and TBX-12 break-over torque wrenches, these holders provide a stable interface for interchangeable insert and power bits. The bit holder is cycle-tested to verify repeatable torque application across its qualification range. The modular design supports multiple bit changes without performance degradation.
PRODUCT FAQ SHEET Open, Flare and Box Wrenches Heads March 2025
FAQ FOR OPEN, FLARE & BO (FOR TBIH, TB & TBX-12 BREAK
OPEN, FLARE & BOX WRENCH HEADS BREAK-OVER WRENCHES) WRENCH HEADS
Q1: What torque are the bit holders rated for?
A1: These values refer to the holder itself under qualification testing.
● 4 mm bit holder: Qualified to 5.65 N·m (50 lbf·in) ● ¼″ bit holder: Qualified to 12 N·m (106 lbf·in) 4 mm bit holder: Qualified to 5.65 N·m (50 lbf·in) ″ bit holder: Qualified to 12 N·m (106 lbf·in)
Important: Maximum allowable torque depends on the complete stack tool). The limiting factor may be either the holder or the bit. Always validate the specific bit + holder combination prior to use, especially for critical or safety Important: Maximum allowable torque depends on the complete stack-up (bit holder + bit + holder combination prior to use, especially for critical or safety-related assemblies.
Q2: Why does the maximum torque depend on the bit?
A2: Torque capacity is determined by the weakest component in the system. A high to the holder’s rated torque, while a lower Torque capacity is determined by the weakest component in the system. A high-strength bit may allow use up to the holder’s rated torque, while a lower-strength bit may reduce the allowable torque. strength bit may allow use up
Q3: How many bit swaps does my bit holder support?
A3: Each Mountz bit holder is engineered to reliably support five (5) bit replacements without degradation to performance or accuracy, provided proper installation procedures are followed. ntz bit holder is engineered to reliably support five (5) bit replacements without degradation to
Because the bit is secured using a retaining compound and requires controlled r tooling and process controls are required. Because the bit is secured using a retaining compound and requires controlled removal and installation, special emoval and installation, special
Mountz recommends that bit replacement be performed by our service team or a qualified technician.
For replacement services, technical guidance, or to evaluate whether your holder please contact Mountz Technical Support for assistance. For replacement services, technical guidance, or to evaluate whether your holder is suitable for additional swaps, is suitable for additional swaps,
Q4: How do I replace the bit inside the bit holder?
A4: The bit holders use Loctite 609 retaining compound to secure the bit in place. When installing a new bit, always:
1. 2. 3. 4.
Clean the bore and the new bit shank thoroughly
Apply Loctite 609
Allow appropriate curing time
Recalibrate the tool before returning the tool to service
1080 North 11th Street, San Jose, CA 95112 | Phone: (408) 292 SILICON VALLEY HEADQUARTERS 1080 North 11th Street, San Jose, CA 95112 | Phone: (408) 292-2214 | Fax: (408) 292-2733 | mountztorque.com mountztorque.com
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Q5: How do I remove a bit from the bit holder?
A5: Because Loctite 609 provides a high-strength bond, removal requires force. Mountz recommends one of the following methods:
● Mechanical Force: Use a high-strength press (e.g., hydraulic press) to push the bit out. ● Heat + Force: Apply controlled heat to soften the Loctite and then use mechanical force to remove the bit.
Avoid using excessive side-loading or prying, which may damage the holder.
Q6: Are these bit holders compatible with other manufacturers’ bits?
A6: Yes. Mountz bit holders are designed to accept standard off-the-shelf ¼” and 4mm bits.
Q7: Can the preset torque value or bit be changed for a new fastening application?
A7: Yes. The bit holder can be repurposed with a new bit or recalibrated for a different torque setting. However, please note recalibration is required whenever the configuration changes.
Q8: When should I re-calibrate my tool?
A8: Recalibrate whenever:
● The bit is changed ● The torque setting is adjusted
● The tool experiences overload or impact ● Periodic calibration interval is reached
If torque performance falls outside the specified ±6% accuracy, the tool must be recalibrated or inspected.
Q9. What materials are the wrench heads made of?
A9: The bit holder is made from 17-4 PH stainless steel, ensuring exceptional strength and corrosion resistance. Please note this material specification is exclusive to the bit holder and does not apply to bits, unless specifically requested.
Q10: Are custom bit holder configurations available?
A10: Yes. Mountz offers custom bit holder solutions, including:
● Specialized head geometries ● Extended or reduced lengths ● Limited-access or application-specific designs
All custom configurations are evaluated on a case-by-case basis for feasibility, performance, and lead time. Please submit your request to Mountz Technical Support to begin the review process.
SILICON VALLEY HEADQUARTERS 1080 North 11th Street, San Jose, CA 95112 | Phone: (408) 292-2214 | Fax: (408) 292-2733 | mountztorque.com
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Q11. What if a customer is requesting a torque beyond the published range?
A11: Requests exceeding published torque ratings are treated as special requests.
Mountz will review the application requirements, configuration, and safety considerations to determine feasibility. Approval is not guaranteed and will depend on engineering validation and testing.
Q12. What is the warranty coverage?
A12: Our tools are built to be durable and reliable. We provide an industry-leading warranty.
● 2 Years Unconditional Warranty ● Lifetime Warranty Against Defects
Please contact customer support for warranty assistance.
SILICON VALLEY HEADQUARTERS 1080 North 11th Street, San Jose, CA 95112 | Phone: (408) 292-2214 | Fax: (408) 292-2733 | mountztorque.com
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