This two piece hand tap set cuts internal metric iso fine thread by controlled manual operation. Select it by M 12 x 0.5, DIN 2181, HSS-G tool material, and the stated tolerance class so the internal thread matches the screw, stud, or mating component in maintenance and workshop use.
Metric fine threads use a finer pitch than the related metric coarse size. Selection must match the exact pitch and mating internal thread. The set is used when manual control is preferred over machine tapping, and the core hole must be prepared correctly before the first tap enters the workpiece. The product data gives 11.5 mm as core hole diameter reference.
- Cut internal threads by hand in repair work, maintenance tasks, prototype production, and small batch metalworking.
- Use the two piece set in sequence so the thread is started under control and then finished to the required depth.
- Select the tap set by thread designation, tolerance class, tool material, and prepared core hole diameter.
- Use HSS-G for general use on well machinable materials up to 900 N/mm², unalloyed steels, and low alloy steels when cutting conditions are suitable.
- Process: manual driving or assisted driving depending on your holder and machine setup
- Use: thread cutting, re tapping, and thread cleaning depending on condition
Note Confirm the core hole, thread depth, and alignment before starting. Use suitable cutting fluid and remove chips so the tap does not bind in the hole.
- The two piece set supports controlled manual thread production with a defined starting and finishing sequence.
- DIN 2181 reference in the product data gives a clear standard context for hand tap selection.
- HSS-G tool material is stated in the product data and supports accurate cutting edges for general workshop use.
- ISO2 6H tolerance information supports correct matching to common internal metric thread requirements.
Drawbacks
- Manual tapping is sensitive to misalignment and excessive torque when the hole, lubricant, or material condition is not suitable.
- Production speed is limited compared with a validated machine tapping process in a rigid setup.
- Check the drawing and confirm that the tap set thread designation matches the required internal thread.
- Prepare the core hole and deburr the hole entry before starting the first tap.
- Clamp the first tap in a suitable tap wrench and align it square to the hole axis.
- Apply cutting fluid to the tap and the hole entry.
- Start the thread with steady pressure and keep the tap aligned during the first turns.
- Continue with controlled rotation and clear chips regularly during the cut.
- Switch to the finishing tap when the first tapping stage is complete.
- Cut to the required depth and then reverse the tap fully out of the hole.
- Clean the internal thread and verify the fit with the matching screw or a suitable plug gauge.
- 1 set Hand Tap set of 2 pieces DIN 2181 HSS-G - M 12 x 0.5
- Product type: Hand tap set of 2 pieces
- Standard: DIN 2181
- Thread designation: M 12 x 0.5
- Thread system: Metric ISO fine thread
- Thread standard: DIN 13
- Tolerance class: ISO2 (6H)
- Thread direction: Right hand thread
- Tool material: HSS-G
- Core hole diameter: 11.5 mm
- Overall length L1: 70 mm
- Thread length L2: 22 mm
- Shank diameter D2: 9 mm
- Square size k: 7 mm
- Packaging unit: 1 piece
- How do you select this hand tap set correctly?
- Match M 12 x 0.5 to the required internal thread and confirm core hole diameter, tolerance class, and workpiece material before tapping.
- Why is this a two piece hand tap set?
- A two piece set supports staged manual tapping, with one tap used to start the thread and one tap used to finish the thread form.
- What does the tolerance class mean for use?
- The tolerance class describes the intended internal thread fit, so it must match the drawing requirement and the mating screw or stud.
- What should you check before tapping a blind hole or a through hole?
- Check available thread depth, chip space, entry chamfer, and tap alignment before you start, because manual tapping errors are difficult to correct after the first turns.
- Where can you find additional technical information on hand taps?
- Use this reference for general handling and application guidance: Technical information hand taps as PDF
- How do you reduce the risk of tap breakage?
- Use the correct core hole, keep the tap straight, use suitable cutting fluid, and clear chips before torque rises sharply.
- Where can you find more VÖLKEL threading tool information for selection and application?
- Use the catalog for product family context and additional selection data: VD 23 catalog as PDF
Do you need help selecting or using the product?
Use the contact form.
In this category: Threading tools
