Mountz MMTB Break-Over Torque Wrench

Capacity 27 / 56 cNm

Preset Miniature Break-Over Wrench with Fixed Head

The MMTB is a miniature preset production torque wrench with a fixed head. The versatile wrench has different head configuration options, like open, box, flare, hex key, and ratchet head. MMTB models are designed to have one permanent head style attached to it.

The wrench's break-over mechanism deflects 90° on torque delivery, visually indicating torque is achieved. Torque limiting wrench improves control of the tightening process and reduces the risk of over and under-tightening.

Features & Benefits

Torque limiting wrench improves control of the tightening process.
Reduces the risk of both over and under-tightening.
Preset wrench ensures that the correct torque value is consistently applied to each fastener.
Tamper-proof internal adjustment. No external adjustment scale – must be preset using a torque analyzer.
Break-over mechanism provides a visual indicator of achieving torque setting.
Configurable wrench – select head types and sizes.
Small with lightweight aluminum handle. Ideal for use in restricted spaces.
The MMTB wrench comes with a head permanently attached to it. It is not removable.

Specs

Size: 3/8" (~9.5 mm) diameter × 3.5" (~89 mm) overall length.
Meets or exceeds accuracy and repeatability requirements of ISO 6789:2017 (± 6% of setting).

Wrench Configuration

When requesting a quote:

Select MMTB wrench handle with torque capacity
Specify head type: e.g. OE (Open Head)
Specify head size: e.g. 1/4"

Head Types & Sizes

OE (Open End) Sizes 7/32" to 3/4"
BH (Box Head) Sizes 1/4" to 3/4"
FN (Flare Nut) Sizes 1/4" to 9/16"
HK (Hex Key) Sizes 1/16" to 5/32"
RH (Ratchet Head) Size 1/4"

MMTB series

Model	Item No. *	Torque Range [ozf·in]	Torque Range [cN·m]	Torque Range [kgf·cm]
MMTB-39z	◻︎	8 - 39	5.6 - 27.5	0.06 - 2.8
MMTB-80z	◻︎	40 - 80	28.2 - 56.4	2.9 - 5.6

Table showing specifications by the manufacturer. It is recommended to primarily use in moderate performance range (approx. 1/3 to 4/5 of rated capacity). If you regularly worked close to the limit of load (max capacity), a larger model or tool might be more advisable. The preferred and certified ranges of these tools is in accordance with the requirements of ISO 6789 (± 6% of setting).

* Refer above section 'MMTB wrench configuration'.

All technical data without guarantee, errors and omissions excepted.