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Description
Technical data for the UN 1 3/16-28 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UN 1 3/16-28 | |
| Thread Pitch P in Inches and mm | 28 threads per inch | 0.91 mm |
| Thread Diameter mm / Decimal | 30.16 mm / 1.1875 in | |
| Outside Diameter d2 | 65 mm | |
| Thickness h1 | 18 mm | |
| Number of Chip Holes | 6 | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UN 1 3/16-28 HSS – precision inch die with a fine pitch of 28 TPI
UN 1 3/16-28 die is a specialized tool for cutting external threads with a fine pitch in the American system. Manufactured from high-speed steel (HSS) in accordance with DIN 22568, it enables precision threading with a diameter of 1 3/16 inches (30.16 mm) and a pitch of 28 threads per inch on components requiring the highest accuracy.
Distinctive features of the UN 1 3/16-28 die
- Fine pitch of 28 TPI – provides exceptional adjustment precision and maximum resistance to loosening
- HSS construction – durability when machining structural steels up to 800 MPa and light alloys
- Tolerance 2A in accordance with ANSI B1.1 – standard accuracy grade for precision joints
- 60° profile – full compatibility with the Unified thread family
- DIN 22568 – proven quality and fit with industrial die stocks
UN 1 3/16-28 die is used in the aerospace industry, measuring instruments, and wherever the highest threading precision is required. Combining a diameter of 30.16 mm with a pitch of 28 TPI provides a solution for specialized technical applications.
Frequently asked questions
The 1 3/16 inch dimension equals 30.16 mm. Conversion is performed using a factor of 25.4 mm/inch. Result: 1.1875 × 25.4 = 30.16 mm.
UN threads have a constant pitch regardless of nominal diameter, while UNC and UNF have variable pitches depending on size. UN 28 always means 28 threads per inch regardless of diameter.
The UN standard includes pitches of 4, 6, 8, 12, 16, 20, 28 and 32 threads per inch. The pitch is selected according to the precision and strength requirements of the joint.
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| 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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