IMPA: 633076

High Speed Steel Spring Threading Tool Model 53 – IMPA 633076

This High Speed Steel (HSS) spring threading tool bit, Model No. 53, is a professional-grade cutting tool designed for precision external and internal threading on lathes. Featuring a welded HSS tip, it delivers exceptional cutting performance and durability, making it a reliable choice for marine maintenance and workshop applications.

The spring mechanism in the tool holder helps reduce chatter and vibration during threading operations, resulting in cleaner thread profiles and longer tool life. Suitable for use with standard lathe tool holders, this bit is ideal for cutting metric and imperial threads on shafts, bolts, and pipe fittings commonly found in marine engineering and ship repairs.

As part of the IMPA 633076 classification, this tool meets the requirements of ship chandlers and marine suppliers, ensuring it is readily identifiable and easy to restock. Whether used in a ship's onboard workshop or a port side machining facility, this tool offers the precision and robustness needed for demanding maritime environments.

Key Features

Technical Specifications

SpecificationValue
MaterialHigh Speed Steel (HSS)
Tip TypeWelded HSS
Model No.53
IMPA Code633076
CategoryIMPA 63 – Cutting Tools
ApplicationThread cutting (external/internal)
Suitable Thread PitchesMetric 0.5–2.5 mm; Imperial 20–10 TPI
Shank Size1/2" x 1/2" (12.7 x 12.7 mm)
Overall Length4" (100 mm)
Hardness63–65 HRC
CompatibilityStandard lathe tool holders

Frequently Asked Questions

What is a spring threading tool used for?

A spring threading tool is used on lathes to cut external or internal threads. Its spring action helps absorb vibration, providing a smoother finish and preventing chatter marks.

Is this tool suitable for marine environments?

Yes, the high speed steel construction and corrosion-resistant finish make it suitable for shipboard workshops and industrial marine services.

What thread sizes can it cut?

It can cut a range of metric and imperial threads, typically from 0.5 to 2.5 mm pitch and 20 to 10 TPI, depending on the lathe setting and tool geometry.

Does this cutting tool fit my existing lathe tool holder?

It is designed to fit standard lathe tool holders with a 1/2" x 1/2" shank, which is a common size. Always verify your holder's dimensions before ordering.

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