IMPA: 632001

Adjustable Round Dies for Straight Pipe Threads

These adjustable round dies are precision-engineered for cutting external straight (parallel) pipe threads, providing the accuracy required for shipboard repairs, pipe fitting, and maintenance work in marine environments. Each die is manufactured from high-speed steel (HSS) with ground cutting edges to ensure clean, uniform threads on steel, stainless steel, brass, and copper piping. The adjustable design allows precise tuning of the cutting diameter to achieve the desired thread fit, making these dies a versatile addition to any ship's tool inventory.

Compliant with IMPA code 632001, these round dies are categorized under cutting tools and fit standard die stocks (sold separately). They are essential for fabricating custom lengths of threaded pipe, replacing damaged threads, or creating couplings and fittings on board. Available in a set covering common imperial and metric pipe sizes, they offer a dependable, long-service-life solution for marine workshops, shipyards, and offshore installations.

Key Features

Technical Specifications

AttributeValue
Product NameAdjustable Round Dies for Straight Pipe Thread
IMPA Code632001
CategoryCutting Tools
Die TypeRound, Adjustable
Thread TypeStraight (Parallel) Pipe Thread
MaterialHigh-Speed Steel (HSS)
Size Range1/8" – 1" (3 mm – 25 mm)
Adjustment Range± 0.005 inches (0.13 mm)
CompatibilityStandard Round Die Stock (Holder)
ApplicationMarine maintenance, pipe fitting, ship repair

Frequently Asked Questions

What is the difference between straight pipe threads and tapered pipe threads?

Straight (parallel) pipe threads have a uniform diameter along the threaded portion, requiring a gasket, O-ring, or sealing compound to create a leak-proof joint. Tapered pipe threads tighten as they are assembled, forming a metal-to-metal seal without additional sealing material. These dies are designed specifically for straight (parallel) threads.

What sizes and thread pitches are available?

These adjustable round dies cover common imperial and metric pipe sizes, typically ranging from 1/8" to 1" (3 mm to 25 mm). They are adjustable to fine-tune the cutting diameter and thread fit. The set includes a variety of sizes to handle most shipboard piping tasks.

Can these dies be used on stainless steel or hardened materials?

Yes, the high-speed steel (HSS) construction, with the use of appropriate cutting fluid or thread cutting oil, is suitable for cutting threads in steel, stainless steel, brass, copper, and other machinable metals commonly found on ships.

Do these dies come with a die holder or stock?

The dies themselves are supplied; die stocks (holders) are sold separately. They fit standard round die stocks and thread cutting heads. Please check our Cutting Tools category for compatible die stocks.

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