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Description
Technical data for the UNS 5/16-40 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNS 5/16-40 | |
| Thread Pitch P in Inches and mm | 40 threads per inch | 0.64 mm |
| Thread Diameter mm / Decimal | 7.94 mm / 0.3125 in | |
| Outside Diameter d2 | 25 mm | |
| Thickness h1 | 9 mm | |
| Number of Chip Holes | 4 | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNS 5/16-40 HSS – a professional tool for Unified National Special threads
Die UNS 5/16-40 is a precision cutting tool for producing external inch threads with a nonstandard, very 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 5/16-40 die
- Very fine pitch of 40 TPI (0.635 mm) – ideal for thin-walled components where a standard thread would weaken the material
- 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
- Universal application – suitable for precision instruments, optics, aviation, and adjustment mechanisms
The UNS 5/16-40 inch die is used wherever exceptionally accurate adjustment or work with thin-walled tubes and sleeves is required. The American UNS 5/16-40 die is the choice of professionals in the precision engineering and aviation industries. Order a tool that meets the highest quality standards.
Frequently asked questions
One inch equals 25.4 mm. For the UNS 5/16-40 thread, calculate: 5/16 × 25.4 mm = 7.94 mm in diameter. A thread count of 40 TPI gives a pitch of: 25.4 mm ÷ 40 = 0.635 mm.
UNS threads have nonstandard pitches for special applications. UNEF is an extra-fine thread series with specified pitches. UN includes threads with constant thread counts: 4, 6, 8, 12, 16, 20, 28, or 32 TPI.
Class 2A is the standard that provides proper clearance during assembly. Tolerance class 1A allows a looser fit. Class 3A is intended for precision connections with minimal clearance.
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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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