Circular threading die with central thread and side slit for adjusting cutting diameter.

Round Die BS 1127; 1950 (o/d 1") HSS - M 5 x 0.8

Item no. 27934

€7.00

in stock - more than 100 pieces available

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The prices are in Euro plus VAT and shipping, insurance and packaging costs.

Application

VÖLKEL Round Die BS 1127:1950 (o/d 1″) HSS - M 5 x 0.8

The VÖLKEL round die BS 1127:1950 is a precision-ground cutting tool made from durable HSS. With an outer diameter of 1 inch (25.4 mm) and Form A (open split), it provides fine adjustability for precise thread fits. Designed for general workshop use, maintenance, and production, it’s ideal for cutting or restoring external metric threads on unalloyed and low-alloy steels up to 800 N/mm².

Application & Benefits

For external thread cutting and repair
Ideal for steels up to 800 N/mm²
Form A (open type) allows fine adjustment of thread tolerance
Precision-ground HSS ensures clean thread profiles and long life
1″ diameter fits standard die holders
Perfect for rethreading, repair, and maintenance

Step-by-Step Instructions

Prepare: Measure the workpiece and chamfer the edge for easier thread start.
Mount: Insert the die into the holder with the chamfered side facing forward and tighten securely.
Align & Lubricate: Align square to the axis and apply cutting oil liberally.
Cut: Rotate steadily clockwise without reversing; reapply lubricant as needed.
Finish: Remove the die, clean the thread, and test fit with a nut or gauge.

Technical Data

Standard	BS 1127:1950
Thread Type	Metric ISO Thread DIN 13
Form	Form A (Open / Split)
Material	HSS-G
Outside Diameter	25.4 mm (1 inch)
Tolerance	6g
Application Range	Unalloyed and low-alloy steels up to 800 N/mm²

FAQ

How do I adjust the die?
Loosen or tighten the die holder’s screw to slightly open or close the die’s split gap.

Can it be used on machines?
It’s primarily designed for hand use but may be used at low speed on machines with sufficient lubrication.

Which cutting oil should I use?
Use high-performance cutting oil for steel to ensure smooth operation and longer tool life.

Is it suitable for rethreading?
Yes, it’s perfect for restoring damaged or worn external threads with high accuracy.

What’s the benefit of Form A?
Form A (open) gives flexibility in fit adjustment and chip removal, making it ideal for versatile applications.

Need advice on die holders or thread standards? Contact us through our contact form.

Additional information

Type of thread	metric ISO-thread
Standard	BS 1127; 1950
Form	splitted version (Form A)
Material	HSS
Tolerance	6g
Size	M 5 x 0.8
Outer diameter	1"
EAN	4022835279341
Item number	27934
Thread standard	DIN 13
Rec. Bolt diameter	4.90 mm

VÖLKEL Round Die BS 1127:1950 (o/d 1″) HSS - M 5 x 0.8

Application & Benefits

For external thread cutting and repair
Ideal for steels up to 800 N/mm²
Form A (open type) allows fine adjustment of thread tolerance
Precision-ground HSS ensures clean thread profiles and long life
1″ diameter fits standard die holders
Perfect for rethreading, repair, and maintenance

Step-by-Step Instructions

Prepare: Measure the workpiece and chamfer the edge for easier thread start.
Mount: Insert the die into the holder with the chamfered side facing forward and tighten securely.
Align & Lubricate: Align square to the axis and apply cutting oil liberally.
Cut: Rotate steadily clockwise without reversing; reapply lubricant as needed.
Finish: Remove the die, clean the thread, and test fit with a nut or gauge.

Technical Data

Standard	BS 1127:1950
Thread Type	Metric ISO Thread DIN 13
Form	Form A (Open / Split)
Material	HSS-G
Outside Diameter	25.4 mm (1 inch)
Tolerance	6g
Application Range	Unalloyed and low-alloy steels up to 800 N/mm²