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Machine Tap DIN 371 Form C 35° Spiral Flute HSSE - UNF No. 12 x 28

Name: Machine Tap DIN 371 Form C 35° Spiral Flute HSSE - UNF No. 12 x 28
Brand: VOLKEL
SKU: 76712
Price: 599000.0 VND
Availability: OutOfStock

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Imported from: Germany

Origin: Made in Germany

Machine Tap DIN 371 Form C 35° Spiral Flute HSSE - UNF No. 12 x 28 by VÖLKEL, item no. 76712, suitable for cutting internal threads.

SKU: 76712

599.000 đ

Price includes VAT

Description

Machine Tap DIN 371 Form C 35° Spiral Flute HSSE - UNF No. 12 x 28

This machine tap supports controlled internal thread cutting when you run a stable setup with reliable alignment and lubrication.

Use the tool material and the specified standard as your baseline, then align the holder to the hole axis to reduce flank damage. The execution follows DIN 371. Form C defines the chamfer and lead-in behavior.

Application

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.
Spiral flute geometry is commonly selected for blind holes because chips are drawn back along the flutes.
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
Helps you maintain process control across single parts and small batches
Keeps tool handling straightforward during tool change and inspection

Drawbacks

Limited suitability for very hard materials unless a dedicated execution is specified
Not suitable for uncontrolled hand tapping without a guided holder

Step by step

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.
Withdraw and clear chips when needed so chips do not pack in the flutes.
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: Machine tap
Standard: DIN 371
Chamfer form: Form C
Tool material: HSSE
Helix angle: 35°
Geometry: Spiral flute
Thread system: UNF

Frequently asked questions (FAQ)

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.

Specifications

Type of thread	Unified Fine Thread
Standard	DIN 371
Form	Form C
Material	HSSE
Tolerance	2B
Size	UNF No. 12 x 28
Overall length (L1)	70 mm
Thread length (L2)	10 mm
Core hole diameter (D1)	4.7 mm
Shank diameter (D2)	6.0 mm
Drive connector	4.9 mm
EAN	4022835767121
Item number	76712
Type of flute	35° Spiral Flute
Application	for blind holes
Thread standard	ANSI B 1.1