Round Die DIN 5158 (DIN EN 24231) HSS - G (BSP) 3/4 x 14 LH

• Cut or rework external threads with the designation G (BSP) 3/4 x 14 LH on prepared bolts, studs, shafts, and threaded repair parts.
• Use in maintenance workshops, mechanical engineering, fixture building, and metal fabrication where an external thread must match the drawing.
• Clamp the round die in a suitable die holder or die stock and keep the holder square to the workpiece axis.
• Check thread system, pitch, tolerance class, and hand direction before the first cut.
• 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 drawing thread designation and prepare a clean lead in chamfer before cutting. The product data lists a recommended bolt diameter of 26.3 mm.

• Direct selection by thread designation reduces the risk of mixing inch and metric thread systems.
• Holder guided use gives you tactile control during repair and fitting work.
• SML data such as tolerance and standard supports clear product differentiation in the shop import.
• Compact tool format is practical for maintenance cases where a machine thread cutting setup is not available.

• Thread quality is sensitive to blank preparation, holder alignment, lubrication, and tool condition.
• Manual or assisted die cutting is less efficient than validated production processes for large series.

1. Confirm that the thread designation on the drawing matches the product name and the product data.
2. Prepare the workpiece blank and create a clean lead in chamfer at the thread start.
3. Clamp the round die securely in a suitable holder before the die touches the workpiece.
4. Apply cutting lubricant to the entry side of the die and the prepared workpiece surface.
5. Align the holder square to the workpiece axis and start the first turns with steady pressure.
6. Advance the die with controlled rotation while keeping the holder guided on the same axis.
7. Reverse briefly at intervals to clear chips from the cutting area.
8. Back the die off the workpiece after the required thread length is reached.
9. Clean the thread and verify the fit with the defined inspection method.

• 1 piece: Round Die DIN 5158 (DIN EN 24231) HSS - G (BSP) 3/4 x 14 LH

• Product type: Round die
• Standard: DIN 5158 (DIN EN 24231)
• Thread designation: G (BSP) 3/4 x 14 LH
• Thread system: G (BSP)
• Tool material: HSS
• Thread standard: DIN ISO 228
• Tolerance class: A
• Recommended bolt diameter: 26.3 mm
• Outside diameter: 55 mm
• Thickness: 16 mm
• Thread direction: Left hand thread

How do you select the correct round die?

Select the round die by the exact thread designation G (BSP) 3/4 x 14 LH, the thread system, tolerance class, direction, and tool material stated in the product data.

Which holder should you use with a round die?

Use a round die holder or die stock that supports the outside diameter and clamps the die securely without tilt.

What preparation is important before cutting an external thread?

Prepare the blank diameter, remove burrs, and create a clean lead in chamfer so the die starts square to the workpiece axis.

Where can you find technical information for round dies?

Use the round die technical information for setup and handling context: Technical information round dies as PDF

How do you reduce the risk of a torn or tight thread?

Keep the die aligned, use suitable cutting fluid, clear chips during the operation, and stop if the cutting load rises sharply.

When should you inspect the thread after cutting?

Inspect the thread after cleaning and before assembly so you can detect wrong pitch, poor surface quality, or incorrect fit before the part is used.

Where can you find the VÖLKEL catalog for threading tool selection?

Use the catalog for the broader range and selection context: VD 23 catalog as PDF