V-COIL Inserting Tool M 27 x 2.0, 1/2 inch square drive

A thread insert installation tool M 27 x 2.0 winds a helical wire coil into a prepared, tapped hole. The VÖLKEL V-COIL inserting tool performs exactly this step. Its mandrel is cut to the M 27 x 2.0 thread designation. A 1/2 inch square drive shank sits at the rear of the tool. That connector accepts a hand ratchet, a wrench or a power tool. The unit is supplied as one piece and built to works standard.

Wire insert thread repair follows a fixed sequence. The damaged hole is drilled, tapped and cleaned first. The V-COIL wire thread insert is then wound in with a matched mandrel. Size discipline matters here. This model serves the M 27 x 2.0 size range and no other pitch. A coarse M 27 coil needs a different mandrel. Store the tool together with the taps for the same thread size.

Thread insert installation tool M 27 x 2.0 in detail

Drive connector and tool form

The tool body is a threaded mandrel with a drive shank. The coil is threaded onto the mandrel before insertion. Turning force comes through the 1/2 inch square connector at the shank end. That size matches common ratchets, torque wrenches and impact-free power drivers. Working by hand gives more feel on thin-walled bores. A power tool speeds up repeated insertions in production or fleet repair work.

• Tool form: threaded mandrel with drive shank
• Drive connector: 1/2 inch square
• Operation: wrench, ratchet or power tool
• Thread system: metric M
• Package quantity: 1 piece

Matching the drive size to the tooling already on the bench keeps the setup simple. A 1/2 inch ratchet is standard in most workshops. Where access is tight, an extension bar between ratchet and tool helps. Keep the mandrel axis aligned with the hole axis during insertion. Misalignment can damage the coil or the freshly cut thread in the parent material.

Thread range and standard

Each inserting tool is tied to one thread designation. This one is dedicated to M 27 x 2.0, a metric fine pitch in a large diameter. The stated size range is M 27 x 2.0, so the mandrel is not interchangeable with other pitches. The reference standard for the tool is Works Standard. Order data lists a single piece per package.

• Thread designation: M 27 x 2.0
• Size range: M 27 x 2.0
• Standard: Works Standard
• Application: M 27 x 2.0 wire thread inserts
• Accessory type: V-COIL inserting tool

Before starting, confirm that the insert on hand is also M 27 x 2.0. Mixed boxes of coils are a frequent source of scrapped parts. Check the tapped hole with a plug gauge or the matching bolt. Then wind the coil in until it seats slightly below the surface. Break off the tang if the insert type is supplied with one.

Common applications

Large metric fine threads appear in gearbox housings, hydraulic blocks, machine bases and press frames. Repeated assembly can wear or strip these threads, especially in aluminium and cast iron. A wire thread insert restores the original M 27 x 2.0 size without redesigning the joint. Typical users are maintenance departments, machine builders, engine rebuilders and heavy vehicle workshops. The tool also serves preventive reinforcement of new threads in soft alloys.

Catalog data as published

The manufacturer lists the item as: 1 piece V-COIL inserting tool with 1/2 inch drive connector, M 27 x 2.0. Technical features cover product type, thread system, thread designation, standard, drive connector, size range and package quantity. No further performance figures are published for this reference. Order it together with the corresponding taps and V-COIL wire thread inserts for a complete repair set.