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Sealey STW103 Micrometer Torque Wrench 3/4" Drive 70-420Nm - Calibrated

Product Number: STW103

£167.87 £164.58

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Over-torquing or under-torquing critical fasteners is a costly mistake in professional settings. The Sealey STW103 micrometer-style torque wrench gives you precise, repeatable control across a 70-420Nm (52-310lb.ft) range, making it suitable for heavy-duty daily professional use. The chrome vanadium steel ratchet head delivers a smooth action, and dual Nm and lb.in/lb.ft scales mean you can work to whichever standard the job demands. Every wrench is individually tested and supplied with its own numbered test certificate, with calibration tolerance in accordance with BS EN ISO 6789-1:2017 and ±4% accuracy. At 650mm in length with a 3/4" square drive, it covers the larger fastener work that smaller wrenches can't reach. Supplied in a protective storage case and backed by a lifetime guarantee.

Key Features:

Sealey STW103 Micrometer Torque Wrench 3/4 Drive is presented as a model-specific workshop product, description and specifications for accurate catalogue use.
Key technical details include nett weight 3.88kg, length 650mm, drive 3/4"Sq, giving buyers clear specification data for accurate selection and comparison.
Safety-focused design includes a ratchet locking mechanism that helps prevent accidental release, helping users maintain control during setup, operation and handling.
It is suited to vehicle servicing, repair bays and maintenance tasks where dependable support or lifting is required, matching the product title and supplied description.
A key selling point is supplied with its own numbered test certificate, giving this model a clear product-specific advantage for buyers comparing similar workshop options.
Operational details include range 70-420Nm(52-310lb.ft), supporting product setup, handling and internal catalogue accuracy for everyday workshop use during routine service work.

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PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.

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Model No	STW103
Brand	Premier
Drive	3/4"Sq
Length	650mm
Nett Weight	3.88kg
Range	70-420Nm(52-310lb.ft)

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Engine Parts	Product Number	Product Name	Recommended Units	Product Price

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Standard Delivery: UK Mainland Free
Next Day Delivery Available
Delivery Estimate: 2 to 4 working days
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Technical Specification
PRODUCT NUMBER	AK228	STW601	STW706	STW905	STW703	80250000	80134000	80105000	80240000
Sq. Drive						3/4	1/2	3/8	3/4
Torque Nm						341+	201 - 340	04 - 100	341+
Torque Lbs.						251+	151 - 250	02 - 75	251+

Technical

Q 1. What is the torque range of the Sealey STW103?

A. The STW103 has a range of 70-420Nm (52-310lb.ft).

Q 2. What drive size is the STW103?

A. The STW103 has a 3/4" square drive.

Q 3. What calibration standard does the STW103 meet?

A. Calibration tolerance is in accordance with BS EN ISO 6789-1:2017, with ±4% accuracy. Each wrench is individually tested and issued with a numbered test certificate.

Q 4. What scales does the STW103 display?

A. The scales are graduated in both Nm and lb.in/lb.ft.

Q 5. What is the length of the STW103 torque wrench?

A. The wrench is 650mm in length.

Q 6. What does the STW103 come supplied with?

A. It is supplied in a storage case along with an individually numbered test certificate.

Q 7. Does the STW103 come with a guarantee?

A. Yes, it is backed by a lifetime guarantee.

Q 8. What are the alternatives to the STW103 for different torque ranges or drive sizes?

A. Alternative torque wrenches available include AK228, AK628, STW501, and STW601 - each offering a different torque range or drive size to suit other applications.

Q 9. What is the ratchet head made from on the STW103?

A. The ratchet head is made from chrome vanadium steel.