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Description
Technical data for the UNS 2 3/4-6 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNS 2 3/4-6 | |
| Thread Pitch P in Inches and mm | 6 threads per inch | 4.23 mm |
| Thread Diameter mm / Decimal | 69.85 mm / 2.75 in | |
| Outside Diameter d2 | 55 mm | |
| Thickness h1 | 16 mm | |
| Number of Chip Holes | 6 | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNS 2 3/4-6 HSS – large special inch die with a coarse pitch
UNS 2 3/4-6 die is a specialized tool for cutting large-diameter external threads with a coarse pitch in the American Unified National Special system. Made from high-speed steel (HSS) in accordance with DIN 22568, it cuts threads with a diameter of 2 3/4 inches (69.85 mm) and a pitch of 6 threads per inch.
Main advantages of the UNS 2 3/4-6 die
- Large diameter of 69.85 mm – large tool for threading heavy structural components and drive shafts
- Coarse pitch of 6 TPI – deep thread profile with high tensile and shear strength
- UNS special thread – a solution for specific applications requiring an unusual combination of parameters
- HSS high-speed steel – capable of machining structural steels up to 800 MPa and nonferrous metals
- DIN 22568 standard – dimensional reliability and compatibility with industrial die holders
Die UNS 2 3/4 is used in heavy industry, the power industry, and the manufacture of large machinery. A diameter of 69.85 mm with a pitch of 6 TPI provides fast assembly and maximum load capacity for threaded connections in steel structures.
Frequently asked questions
The 2 3/4 inch dimension is 69.85 mm. The conversion factor is 25.4 mm per inch. Result: 2.75 × 25.4 = 69.85 mm.
UNS (Unified National Special) is a thread with a nonstandard combination of diameter and pitch. For the 2 3/4 inch size, the standard UNC series has a pitch of 4 TPI. A pitch of 6 TPI is nonstandard for this diameter, hence the UNS designation.
The Unified system includes: UNC – coarse threads, UNF – fine threads, UNEF – extra-fine threads, UN – constant-pitch threads, and UNS – threads with special parameters.
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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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