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Description
Technical data for the UNF 1 1/4-12 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNF 1 1/4-12 | |
| Thread Pitch P in Inches and mm | 12 threads per inch | 2.12 mm |
| Thread Diameter mm / Decimal | 31.75 mm / 1.25 in | |
| Outside Diameter d2 | 65 mm | |
| Thickness h1 | 18 mm | |
| Number of Chip Holes | 5 | |
| Required Shaft Diameter | 31.55 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNF 1 1/4-12 HSS – a durable tool for industrial inch threads
Die UNF 1 1/4-12 produces external threads with a diameter of 1 1/4 inch (31.75 mm) and 12 threads per inch. The UNF (Unified National Fine) system provides 71% more threads per inch than its UNC 1 1/4-7 counterpart, resulting in higher load capacity and better resistance to loosening. HSS ensures durability in demanding applications.
Features of the UNF 1 1/4-12 die
- Pitch of 12 threads/inch – 71% more threads per inch than UNC 1 1/4-7
- Diameter of 31.75 mm – for the heavy machinery and energy industries
- HSS high-speed steel – machining structural and alloy steels with tensile strengths up to 800 MPa
- Conforms to DIN 22568 – quality verified by a European standard
- Thread angle 60° – compliance with the Unified National system ANSI B1.1
The tool is used in machine building, the automotive industry, and servicing heavy equipment. The UNF 1 1/4-12 fine thread minimizes the risk of loosening under high loads and vibration.
Frequently asked questions
A diameter of 1 1/4 inch equals 31.75 mm. Calculation: 1.25 × 25.4 mm = 31.75 mm.
UNF has 12 threads per inch, while UNC has only 7. The difference is 5 threads, meaning UNF has a 71% higher thread density.
In the heavy machinery, energy, and automotive industries for connections requiring high load capacity.
Product accessories
Thread ring gauge UNF 1.1/4-12 2A GO NO-GO
Reference: 15422 In stock < 10 items
€92.11
€113.29 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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