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Description
Technical data for the UNEF 5/8-24 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNEF 5/8-24 | |
| Thread Pitch P in Inches and mm | 24 threads per inch | 1.06 mm |
| Thread Diameter mm / Decimal | 15.88 mm / 0.625 in | |
| Outside Diameter d2 | 45 mm | |
| Thickness h1 | 14 mm | |
| Number of Chip Holes | 6 | |
| Required Shaft Diameter | 15.76 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
UNEF 5/8-24 HSS die – American-standard extra fine thread die
UNEF 5/8-24 die is a professional tool for producing external threads in the American Extra Fine system. Manufactured from high-speed steel (HSS) in accordance with DIN 22568, it is used to cut threads with a diameter of 5/8 inch (15.88 mm) and a pitch of 24 threads per inch on shafts and precision components.
Key features of the UNEF 5/8-24 die
- Extra fine pitch, 24 TPI – high thread density ensuring precise adjustment and stability under dynamic loads
- HSS construction – durability when machining steels up to 800 MPa and non-ferrous metals
- Tolerance class 2A according to ANSI B1.1 – standard accuracy for American thread fits
- 60° thread profile – compatibility with the entire Unified thread family
- DIN 22568 standard – universal fit in threading heads and die stocks
UNEF 5/8 die is used in the aerospace industry, where maximum resistance to loosening is required. A diameter of 15.88 mm with a pitch of 24 TPI provides a solution for joints exposed to intense vibration.
Frequently asked questions
A diameter of 5/8 inch equals 15.88 mm. The conversion factor is 25.4 mm per inch. Calculation: 0.625 × 25.4 = 15.88 mm.
The UNEF (Extra Fine) standard offers the highest thread density in the Unified family. UNC is coarse, UNF is fine, and UNEF is extra fine. For 5/8 inch: UNC has 11 TPI, UNF has 18 TPI, and UNEF has 24 TPI.
The Unified system also includes: UNC – the coarse thread version, UNF – the fine thread version, UNS – special nonstandard threads, and UN – series with a constant thread count: 4, 6, 8, 12, 16, 20, 28, or 32 per inch.
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Shipping
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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