Some torque drivers will be damaged if used for unfastening bolts. Is this tool ok for that??

You should never use a torque drive to unfasten, regardless of what is on the box. Torque drivers and wrenches have to be calibrated (and should be regularly recalibrated). Using them to unfasten causes them to become inaccurate faster, if not damaging the tool permanently.

Does anyone know the accuracy of this? It's odd that Park doesn't listed it on its website...makes me think it's up near +/- 6% or something.

I just (December 2019) purchased two of these, and tested both of them using a park tool tw-5.2 AND a Quinn digital torque adapter. Both Park ATD-1.2 torque drivers delivered higher torque than the indicated value. 4NM indicated on the ATD-1.2 was actually just over 4.6NM tested. The errors got smaller as the torque values went up...at 6NM indicated, the actual torque delivered was about 6.7 NM. In other words, at the low end the ATD-1.2 delivers about 15% more torque than indicated, and at the high end, it delivers about 12% more torque than indicated. This was consistent...both of my ATD-1.2 drivers gave me the same results, and the results were the same regardless of which device I used to measure them!

What is the difference between the atd 1 and the atd 1.2?

The ATD-1 is the old version the ATD-1.2 is the new version. The new one is a little easier to adjust the torque setting, but works basically the same.

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Park Tool ATD-1.2 - Adjustable Torque Driver Tool,Blue | bike-hand-tools

Park Tool ATD-1.2 - Adjustable Torque Driver Tool,Blue | bike-hand-tools

Product ID: 267398451

Details

Brand
Park Tool
Colour
Blue
Item length
0.18 Meters
Item weight
0.3 Kilograms
Material
Aluminum

🔧All-metal durable build

🧲Magnetic bit retention

⚙️Adjustable torque 4-6 Nm

$U7853

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Description

🔩 Tighten with confidence, ride with pride.

BUILT TO LAST - All-metal internal construction ensures longevity and reliable performance ride after ride.
ERGONOMIC COMFORT GRIP - Composite molded handle designed for fatigue-free use during extended maintenance sessions.
INTEGRATED BIT STORAGE - Includes 3mm, 4mm, 5mm, and T25 bits stored conveniently in the handle—always ready when you are.
PRECISION TORQUE CONTROL - Set exact torque from 4 to 6 Nm to protect your bike’s delicate components.
FACTORY CALIBRATED ACCURACY - Assembled and calibrated in Minnesota for trusted, professional-grade precision every time.

The Park Tool ATD-1.2 is a professional-grade adjustable torque driver designed to prevent overtightening with precise torque settings from 4 to 6 Newton meters. Featuring an all-metal internal build, ergonomic grip, magnetic bit retention, and factory calibration, it’s engineered for durability and accuracy, making it an essential tool for cyclists who demand flawless maintenance.

Specifications

ASIN	B076CX3WDT
ASIN	B076CX3WDT
Batteries Included?	No
Batteries Required?	No
Battery Cell Type	Lithium
Best Sellers Rank	#10,452 in Sporting Goods ( See Top 100 in Sporting Goods ) #19 in Bike Shop Tools
Color	Blue
Customer Reviews	4.7 4.7 out of 5 stars (1,542)
Customer reviews	4.7 4.7 out of 5 stars (1,542)
Date First Available	17 October 2017
Date First Available	17 October 2017
Department	Unisex
Finish	Polished
Head Style	Adjustable
Included components	ATD-1.2 - Adjustable Torque Driver
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	302 g
Item model number	QKATD12
Item model number	QKATD12
Manufacturer	Park Tool
Manufacturer	Park Tool
Material	Aluminum
Measurement System	metric
Part number	QKATD12
Pattern	Single
Power source type	ac
Product Dimensions	17.78 x 12.7 x 5.08 cm; 302 g
Product Dimensions	17.78 x 12.7 x 5.08 cm; 302 g
Size	One Size
Style	ATD-1.2 - Adjustable Torque Driver
Torque	6 Newton Meters

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$U7853

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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