Machine Tap DIN 5156 Form B HSSE - G (BSP) 3/8 x 19 | VÖLKEL
Machine Tap DIN 5156 Form B HSSE - G (BSP) 3/8 x 19
Use this machine tap to produce internal threads during service work and small-batch manufacturing where tool control matters. The execution follows DIN 5156.
Select the geometry and chamfer form to match the hole type and the desired process stability, and verify the thread designation before you start. Form B defines the chamfer and lead-in behavior.
- Cut internal threads in pre-drilled holes using a controlled machine process.
- Use a machine tap holder, collet system, or tapping attachment suited to the tap shank and drive.
- 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 Use cutting fluid suited to the workpiece material and keep the tool clean and protected after use.
- Makes selection easier by referencing standard, form, and thread designation
- Supports predictable lead-in when you align the tool to the hole axis
- Helps you achieve repeatable internal thread form in workshop conditions
- Keeps tool handling straightforward during tool change and inspection
- Provides a defined chamfer form for consistent thread start
Drawbacks
- Limited suitability for very hard materials unless a dedicated execution is specified
- Not suitable for uncontrolled hand tapping without a guided holder
- Confirm the thread designation and ensure the workpiece hole is prepared and free of burrs.
- Secure the workpiece so the hole axis is stable during the tapping cycle.
- Mount the tap in a suitable machine tap holder and check that the tool runs true.
- Apply cutting fluid suited to the workpiece material.
- Align the tool to the hole axis before you start the tapping cycle.
- Run the tapping cycle with controlled feed and observe chip evacuation.
- Reverse out under control when the required thread depth is reached.
- Clean the thread and the tool, then protect the cutting edges for storage.
Scope of supply is not specified in the provided product data for this item.
- Tool type: Machine tap
- Standard: DIN 5156
- Chamfer form: Form B
- Tool material: HSSE
- Thread system: G
- When should you use a machine tap instead of a hand tap
- Use a machine tap when you can guide the tool with a machine spindle and a suitable tap holder, and when you want controlled feed that matches the thread pitch.
- What holder type do you need for this tap
- Use a machine tap holder, collet system, or tapping chuck that supports the tap shank and keeps alignment to the hole axis stable.
- What preparation is required before you tap the thread
- Prepare the core hole to the correct size for the thread designation, remove burrs, and add a small lead-in chamfer so the tap can start without side load.
- How do you control chips and cutting fluid during tapping
- Use cutting fluid suited to the workpiece material and clear chips regularly, especially in deeper holes or tougher materials, to prevent chip packing and tool overload.
- Where can you find additional technical information for this execution
- Use the following PDF for reference on inch threads and conversions: Inch to mm conversion table as PDF
- How do you reduce risk of tap breakage
- Keep alignment stable, avoid side load at entry, and stop if torque rises sharply so you can inspect hole preparation, lubrication, and chip evacuation.
- Where can you find more product and application information in the VÖLKEL catalog
- Use this catalog for additional details and related items: VD 23 catalog as PDF
- How do you inspect the thread after tapping
- Check that the thread is clean, that the start is not damaged, and that the functional fit matches the mating component used in your assembly.
Do you need help selecting or using the product?
Use the contact form.
