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Description
Technical data for the UNEF 1-20 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNEF 1-20 | |
| Thread Pitch P in Inches and mm | 20 threads per inch | 1.27 mm |
| Thread Diameter mm / Decimal | 25.4 mm / 1 in | |
| Outside Diameter d2 | 55 mm | |
| Thickness h1 | 16 mm | |
| Required Shaft Diameter | 25.26 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNEF 1-20 HSS – large Extra Fine inch threading die
Die UNEF 1-20 is a professional tool for cutting large external threads to the American extra-fine thread standard. Manufactured from high-speed steel (HSS) to DIN 22568, it cuts threads with a diameter of 1 inch (25.4 mm) and 20 threads per inch.
Main features of the UNEF 1-20 die
- Extra fine pitch, 20 TPI – fine pitch at a large diameter for precision and vibration resistance
- HSS construction – capable of machining steels with strength up to 800 MPa, as well as aluminum and brass
- Tolerance class 2A according to ANSI B1.1 – guaranteed accuracy for industrial fits
- Thread profile angle 60° – compatibility with Unified system fasteners
- DIN 22568 – assured dimensions and fit in large die stocks
Die UNEF 1 inch is used in the aviation industry, hydraulic power systems, and the servicing of American machinery. A diameter of 25.4 mm with 20 TPI is a solution for demanding large-section joints requiring stability.
Frequently asked questions
A dimension of 1 inch equals exactly 25.4 mm. This is the basic inch-to-millimeter conversion factor. The value of 25.4 mm/inch is constant for all conversions.
UNEF (Extra Fine) offers the highest thread count per inch among Unified threads. UNC represents coarse threads, UNF fine threads, and UNEF extra-fine threads. For a diameter of 1 inch: UNC has 8 TPI, UNF has 12 TPI, and UNEF has 20 TPI.
The Unified system also includes: UNC – the coarse-thread variant, UNF – the fine-thread variant, UNS – special nonstandard threads, and UN – constant-pitch threads with 4, 6, 8, 12, 16, 20, 28, or 32 threads per inch.
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All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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