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Description
Technical data for the UNF 9/16-18 left-hand die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNF 9/16-18 LH | |
| Thread Pitch P in Inches and mm | 18 threads per inch | 1.41 mm |
| Thread Diameter mm / Decimal | 14.29 mm / 0.5625 in | |
| Outside Diameter d2 | 38 mm | |
| Thickness h1 | 10 mm | |
| Number of Chip Holes | 5 | |
| Required Shaft Diameter | 14.14 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNF 9/16-18 LH HSS – a versatile tool for left-hand industrial threaded connections
UNF 9/16-18 left-hand die cuts left-hand external threads with a diameter of 9/16 inch (14.29 mm) and 18 threads per inch. The UNF (Unified National Fine) system provides 50% more threads per inch than its UNC 9/16-12 counterpart, resulting in higher load capacity. The left-hand thread prevents self-loosening in rotating mechanisms.
Features of the UNF 9/16-18 left-hand die
- Left-hand thread (LH – left hand) – for mechanisms rotating clockwise
- Pitch of 18 threads/inch – a 50% finer pitch than UNC 9/16-12
- Diameter of 14.29 mm – for spindles, fans, and industrial equipment
- HSS high-speed steel – effective machining of steel and nonferrous alloys
- Conforms to DIN 22568 – quality verified by a European standard
The tool is used in industrial fans, machine tool spindles, power units, and equipment requiring protection against loosening. The UNF fine thread minimizes the risk of unscrewing at high rotational speeds.
Frequently asked questions
A diameter of 9/16 inch equals 14.29 mm. Calculation: 0.5625 × 25.4 mm = 14.2875 mm ≈ 14.29 mm.
UNF has 18 threads per inch, while UNC has only 12. The difference is 6 threads, meaning UNF has a 50% higher thread density.
For spindles, industrial fans, centrifuges, and rotating mechanisms requiring a left-hand thread.
Product accessories
UNF 9/16-18 LH DIN 374 C L40 HSSE Fanar tapping
Reference: 10532 In stock < 10 items
€36.84
€45.32 brutto
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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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