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Description
Technical data for the UNS 1/4-26 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNS 1/4-26 | |
| Thread Pitch P in Inches and mm | 26 threads per inch | 0.98 mm |
| Thread Diameter mm / Decimal | 6.35 mm / 0.25 in | |
| Outside Diameter d2 | 25 mm | |
| Thickness h1 | 7 mm | |
| Number of Chip Holes | 4 | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Inch threading die UNS 1/4-26 HSS – professional tool for Unified special threads
Die UNS 1/4-26 is a precision cutting tool for producing external inch threads with a nonstandard, fine pitch. UNS (Unified National Special) denotes a thread with a special combination of diameter and pitch that is unavailable in the standard UNC or UNF series. The tool is made of high-speed steel (HSS) in accordance with DIN 22568.
Key advantages of the UNS 1/4-26 die
- Fine pitch of 26 TPI (0.977 mm) – special pitch for precision joints and thin-walled components
- HSS steel for strengths up to 800 MPa – ensures durability and cutting precision in structural steels, aluminum, and brass
- Tolerance class 2A according to ANSI – standard accuracy class ensuring proper fit with a 2B nut
- Conforms to DIN 22568 – verified tool manufacturing quality and dimensions
- Compact diameter of 1/4 inch (6.35 mm) – for small components and precision mechanisms
The UNS 1/4-26 inch threading die is used in the manufacture of precision components, measuring instruments, and adjustment mechanisms. The American UNS 1/4-26 die is the choice of professionals requiring a finer pitch than standard UNF. Order a tool that meets the highest quality standards.
Frequently asked questions
The 1/4-inch diameter converted: 1/4 × 25.4 mm = 6.35 mm. A thread pitch of 26 TPI means: 25.4 mm ÷ 26 = 0.977 mm per thread.
The UNF 1/4 thread has 28 TPI, while UNS 1/4-26 has a slightly coarser pitch of 26 TPI. The difference of 2 threads per inch provides greater strength while maintaining a fine pitch.
The UNS 1/4-26 thread offers a compromise between UNC and UNF. It provides greater strength than UNF while maintaining a fine pitch. Ideal for special industrial applications.
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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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