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Description
Technical data for the UNS No 10-40 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNS No 10-40 | |
| Thread Pitch P in Inches and mm | 40 threads per inch | 0.64 mm |
| Thread Diameter mm / Decimal | 4.83 mm / 0.19 in | |
| Outside Diameter d2 | 20 mm | |
| Thickness h1 | 7 mm | |
| Number of Chip Holes | 3 | |
| Required Shaft Diameter | 4.71 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNS No10-40 HSS – miniature numbered-size inch die for special threads
Die UNS No10-40 is a precision tool for producing external threads with an extra fine nonstandard pitch in the American numbered-size system. Manufactured from high-speed steel (HSS) in accordance with DIN 22568, it cuts threads with a diameter of No 10 (4.83 mm / 0.190 inch) and a pitch of 40 threads per inch.
Main advantages of the UNS No10-40 die
- Extremely fine pitch of 40 TPI – the finest threads for applications requiring maximum precision
- Numbered size No 10 – diameter of 4.83 mm used in electronics and precision mechanics
- HSS construction – capable of machining steels with strengths up to 800 MPa and nonferrous metals
- Tolerance class 2A according to ANSI B1.1 – guaranteed accuracy for precision fits
- DIN 22568 standard – dimensional reliability and compatibility with industrial die holders
Die UNS No 10 is used in the electronics industry, optics, and the manufacture of precision measuring instruments. The thread density of 40 TPI significantly exceeds the standard UNF value (32 TPI), offering exceptional stability for miniature joints.
Frequently asked questions
Size No 10 corresponds to a diameter of 4.83 mm (0.190 inch). The numbered-size system uses the formula: diameter = 0.060 + (number × 0.013) inch. For No 10: 0.060 + (10 × 0.013) = 0.190 inch = 4.83 mm.
UNS (Unified National Special) is a thread with an unusual combination of diameter and pitch. For size No 10, the standard values are: UNC 24 TPI, UNF 32 TPI. A pitch of 40 TPI falls outside these series, so it is classified as UNS.
The Unified family also includes: UNC – the coarse-thread version, UNF – the fine-thread version, UNEF – the extra-fine-thread version, and UN – constant-pitch series: 4, 6, 8, 12, 16, 20, 28, or 32 threads per inch.
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