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Description
Technical data for the UNC No 8-32 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNC No 8-32 | |
| Thread Pitch P in Inches and mm | 32 threads per inch | 0.79 mm |
| Thread Diameter mm / Decimal | 4.17 mm / 0.164 in | |
| Outside Diameter d2 | 20 mm | |
| Thickness h1 | 7 mm | |
| Number of Chip Holes | 3 | |
| Required Shaft Diameter | 4.07 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
UNC No 8-32 HSS die – tool for small-diameter inch threads
UNC No 8-32 die enables cutting of external threads with a diameter of No 8 (4.17 mm) and a pitch of 32 threads per inch. This is a standard size used in the American electronics and precision engineering industries. Made of high-speed steel (HSS), it provides high durability.
Features of the American No 8-32 die
- No 8 diameter equal to 4.17 mm – common size in electronic connectors
- HSS material 800 MPa – effective machining of carbon and alloy steels
- Tolerance 2A according to ANSI B1.1 – precise fit with 2B nuts
- DIN 22568 – standardized external die dimensions
- 60° profile – compliant with the Unified National system
The die is intended for maintenance departments in manufacturing plants, household appliance repair shops, and companies importing American machinery. Proven quality for demanding applications.
Frequently asked questions
Size No 8 is 4.17 mm (0.164 inch). Conversion factor: 1 inch = 25.4 mm. Calculation: 0.164 × 25.4 = 4.17 mm.
The Unified system also includes: UNF – fine threads, UNEF – extra fine threads, UNS – special threads, and UN – constant-pitch threads with 4, 6, 8, 12, 16, 20, 28, or 32 threads per inch.
The UNC standard has a coarser pitch and fewer threads per inch than UNF. A No 8 UNC thread has 32 threads, while No 8 UNF has 36 threads per inch. Thread pitch gauges are used for measurement.
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| 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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