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Hand Tap DIN 352 Form C HSS-G non-serial form - M 8 x 1.25 | VÖLKEL

Hand Tap DIN 352 Form C HSS-G non-serial form - M 8 x 1.25

This hand tap is suited for controlled internal thread cutting by hand when you align the tool carefully and use suitable cutting fluid.

If the execution is a set, start with the entry tool and move through the sequence so the finishing tap sets the final profile. The execution follows DIN 352. Form C defines the chamfer and lead-in behavior.

Application

  • Cut internal threads manually in prepared holes during repair and workshop work.
  • Use a suitable tap wrench to keep the tool aligned and to control torque.
  • 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.

Benefits

  • Helps you achieve repeatable internal thread form in workshop conditions
  • Enables controlled chip transport when cutting fluid and reversal are managed
  • Fits typical tap holding systems appropriate to the tool type
  • Provides a defined chamfer form for consistent thread start
  • Supports stable cutting edges for frequent use in service operations
Drawbacks
  • Limited suitability for very hard materials unless a dedicated execution is specified
  • Not suitable for high-performance machine tapping without controlled guidance

Step by step

  1. Confirm the thread designation and ensure the hole is prepared and deburred.
  2. Clamp the workpiece so the hole axis stays stable while you tap.
  3. Mount the tap in a suitable tap wrench and keep the tool square to the hole.
  4. Apply cutting fluid suited to the workpiece material.
  5. Start the thread with steady torque while maintaining alignment.
  6. Reverse as needed to clear chips and reduce cutting load.
  7. Continue until the required thread depth is reached, then reverse out fully.
  8. Clean the thread and the tool, then protect the cutting edges for storage.

Scope of supply

Scope of supply is not specified in the provided product data for this item.

Technical features

  • Tool type: Hand tap
  • Standard: DIN 352
  • Chamfer form: Form C
  • Tool material: HSS-G
  • Thread system: ISO metric
  • Tolerance class: 6H

Frequently asked questions (FAQ)

When should you use a hand tap instead of a machine tap
Use a hand tap when you need manual control in repair or assembly work, or when machine access is limited and you can keep the tool aligned with a tap wrench.
What tool do you use to drive the tap
Use a tap wrench that holds the square drive securely and lets you maintain alignment to the hole axis.
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 hand tapping handling: Technical information hand taps 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.

Additional information
Type of thread metric ISO-thread
Standard DIN 352
Form Form C
Material HSS-G
Tolerance ISO2 (6H)
Size M 8 x 1.25
Overall length (L1) 56 mm
Thread length (L2) 22 mm
Core hole diameter (D1) 6.8 mm
Shank diameter (D2) 6.0 mm
Drive connector 4.9 mm
Item number 27642-3
Type of flute straight fluted
Application for through and blind holes
Thread standard DIN 13
Hand Tap DIN 352 Form C HSS-G non-serial form - M 8 x 1.25 | VÖLKEL

Hand Tap DIN 352 Form C HSS-G non-serial form - M 8 x 1.25

This hand tap is suited for controlled internal thread cutting by hand when you align the tool carefully and use suitable cutting fluid.

If the execution is a set, start with the entry tool and move through the sequence so the finishing tap sets the final profile. The execution follows DIN 352. Form C defines the chamfer and lead-in behavior.

Application

  • Cut internal threads manually in prepared holes during repair and workshop work.
  • Use a suitable tap wrench to keep the tool aligned and to control torque.
  • 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.

Benefits

  • Helps you achieve repeatable internal thread form in workshop conditions
  • Enables controlled chip transport when cutting fluid and reversal are managed
  • Fits typical tap holding systems appropriate to the tool type
  • Provides a defined chamfer form for consistent thread start
  • Supports stable cutting edges for frequent use in service operations
Drawbacks
  • Limited suitability for very hard materials unless a dedicated execution is specified
  • Not suitable for high-performance machine tapping without controlled guidance

Step by step

  1. Confirm the thread designation and ensure the hole is prepared and deburred.
  2. Clamp the workpiece so the hole axis stays stable while you tap.
  3. Mount the tap in a suitable tap wrench and keep the tool square to the hole.
  4. Apply cutting fluid suited to the workpiece material.
  5. Start the thread with steady torque while maintaining alignment.
  6. Reverse as needed to clear chips and reduce cutting load.
  7. Continue until the required thread depth is reached, then reverse out fully.
  8. Clean the thread and the tool, then protect the cutting edges for storage.

Scope of supply

Scope of supply is not specified in the provided product data for this item.

Technical features

  • Tool type: Hand tap
  • Standard: DIN 352
  • Chamfer form: Form C
  • Tool material: HSS-G
  • Thread system: ISO metric
  • Tolerance class: 6H

Frequently asked questions (FAQ)

When should you use a hand tap instead of a machine tap
Use a hand tap when you need manual control in repair or assembly work, or when machine access is limited and you can keep the tool aligned with a tap wrench.
What tool do you use to drive the tap
Use a tap wrench that holds the square drive securely and lets you maintain alignment to the hole axis.
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 hand tapping handling: Technical information hand taps 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.

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