IMPA: 633113

High Speed Steel Tip Welded Tool Bits – Square Nose Straight Model No. 64

These high-speed steel (HSS) tip welded tool bits are precision-engineered for a wide range of metal cutting operations onboard ships and in shore-based engineering workshops. The square nose straight-shank design provides excellent rigidity and accuracy during turning, facing, and boring. Model No. 64 is a popular choice for both routine maintenance and heavy-duty repair work.

Each tool bit features a hardened HSS cutting tip that is securely welded to a tough steel shank, ensuring superior heat resistance and edge retention even under continuous use. The square (90°) nose geometry allows straightforward cutting geometry for general-purpose machining of carbon steel, stainless steel, brass, and aluminum. These bits are supplied with a fine-ground finish for immediate use.

As a standard inventory item under IMPA 633113 — Cutting Tools, this tool is recognized by marine purchasing departments worldwide. Its compact and robust design makes it an essential addition to any ship's tool inventory, ensuring reliable performance for deck and engine room maintenance.

Key Features

Technical Specifications

SpecificationValue
Product TypeWelded Tool Bit, Square Nose Straight
Model No.64
IMPA Code633113
Tip MaterialHigh-Speed Steel (HSS)
Shank MaterialHardened Carbon Steel
Overall Length6 in (152 mm)
Shank Width1/2 in (12.7 mm)
Shank Thickness1/2 in (12.7 mm)
Cutting Edge Angle90° (Square)
Hardness (Tip)63–65 HRC
ApplicationTurning, Facing, Boring, Chamfering

Frequently Asked Questions

What is a High-Speed Steel Tip Welded Tool Bit?

A high-speed steel (HSS) tip welded tool bit consists of a HSS cutting tip brazed or welded to a steel shank. It is used primarily for lathe operations like turning and facing in metalworking workshops.

Can this tool bit machine stainless steel?

Yes, HSS tool bits can machine stainless steel when run at appropriate cutting speeds with coolant. They are particularly useful in ship maintenance where stainless steel parts are common.

What are the dimensions of Model No. 64?

Model No. 64 refers to a square nose straight tool bit with a nominal shank size of 1/2 inch × 1/2 inch and an overall length of 6 inches (12.7 mm × 12.7 mm × 152 mm).

What does IMPA 633113 cover?

IMPA 633113 is the International Marine Purchasing Association code for cutting tools, specifically high-speed steel tool bits and related lathe cutting tools. This makes it easy to identify in ship chandler catalogs.

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