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Description
Technical data for the left-hand UNF 1 1/2-12 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNF 1 1/2-12 LH | |
| Thread Pitch P in Inches and mm | 12 threads per inch | 2.12 mm |
| Thread Diameter mm / Decimal | 38.1 mm / 1.5 in | |
| Outside Diameter d2 | 75 mm | |
| Thickness h1 | 20 mm | |
| Number of Chip Holes | 8 | |
| Required Shaft Diameter | 37.90 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNF 1 1/2-12 left-hand HSS – professional tool for the largest left-hand fine threads
Left-hand UNF 1 1/2-12 die is used to cut left-hand external threads with a diameter of 1 1/2 inches (38.1 mm) and a pitch of 12 threads per inch. The UNF (Unified National Fine) fine-thread standard offers twice as many threads as its UNC 1 1/2-6 counterpart, ensuring maximum load capacity. The left-hand thread prevents self-loosening in heavy-duty rotating equipment.
Advantages of the UNF 1 1/2-12 left-hand die
- Left-hand thread (LH – left hand) – for the heaviest-duty mechanisms rotating clockwise
- Fine pitch of 12 threads/inch – 2× as many threads per inch as UNC 1 1/2-6
- Diameter of 38.1 mm – for turbines, generator sets, and industrial spindles
- HSS high-speed steel – effective machining of materials with tensile strengths up to 800 MPa
- DIN 22568 – European standard for quality and dimensional accuracy
The die is used in turbines, power generation units, heavy-duty machine tool spindles, and the power industry. The UNF fine thread provides maximum joint stability under extreme loads and vibration.
Frequently asked questions
A diameter of 1 1/2 inch is 38.1 mm. Conversion: 1.5 × 25.4 mm = 38.1 mm.
UNF has 12 threads per inch, while UNC has only 6. The fine thread has 2× the thread density (twice as many threads per inch).
For turbines, power generation units, heavy-duty machine tool spindles, and industrial equipment requiring a left-hand thread.
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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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