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Description
Technical data for the UNF 3/4-16 left-hand die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNF 3/4-16 LH | |
| Thread Pitch P in Inches and mm | 16 threads per inch | 1.59 mm |
| Thread Diameter mm / Decimal | 19.05 mm / 0.75 in | |
| Outside Diameter d2 | 45 mm | |
| Thickness h1 | 14 mm | |
| Number of Chip Holes | 6 | |
| Required Shaft Diameter | 18.89 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNF 3/4-16 left-hand HSS – professional tool for left-hand industrial threads
UNF 3/4-16 left-hand die enables cutting of left-hand external threads with a diameter of 3/4 inch (19.05 mm) and a pitch of 16 threads per inch. The UNF (Unified National Fine) fine-thread standard offers 60% more threads than its UNC 3/4-10 counterpart. The left-hand thread provides effective protection against self-loosening in rotating equipment.
Characteristics of the UNF 3/4-16 left-hand die
- Left-hand thread (LH – left hand) – prevents loosening in mechanisms rotating clockwise
- Fine pitch of 16 threads/inch – 60% more threads than UNC 3/4-10
- Diameter of 19.05 mm – for industrial fans, centrifuges, and spindles
- HSS steel compliant with DIN-EN 22568 – for machining materials up to 800 MPa
- Thread profile angle 60° – fully compatible with the Unified National system
The die is used in industrial fans, centrifuges, machine tool spindles, and power units. The UNF fine thread provides greater load capacity and excellent resistance to loosening under vibration.
Frequently asked questions
A diameter of 3/4 inch is 19.05 mm. Conversion: 0.75 × 25.4 mm = 19.05 mm.
UNF has 16 threads/inch, while UNC has only 10. The fine thread has a 60% higher thread count (6 more threads).
In fans, centrifuges, spindles, and industrial equipment requiring a left-hand fine thread.
Product accessories
Hand Tap UNF 3/4-16 LH DIN 2181/2 HSS 2B
Reference: 14334 In stock > 10 items
€31.58
€38.84 brutto
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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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