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Description
Technical data for the UNC 5/16-18 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNC 5/16-18 | |
| Thread Pitch P in Inches and mm | 18 threads per inch | 1.41 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 | |
| Required Shaft Diameter | 7.80 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
Die UNC 5/16-18 HSS – compact inch threads for versatile applications
UNC 5/16-18 die cuts external threads with a diameter of 5/16 inch (7.94 mm) and 18 threads per inch. This size is commonly found in American mechanical and electronic equipment. High-speed steel (HSS) construction in accordance with DIN-EN 22568 ensures high quality.
Features of the 5/16-18 inch threading die
- Diameter of 7.94 mm – a versatile size for light- and medium-duty connections
- 18 threads per inch – standard pitch for secure fastening
- HSS steel – suitable for machining materials with strength up to 800 MPa
- DIN-EN 22568 standard – European standard for external dimensions
- Thread profile angle 60° – compliance with the Unified National system
Designed for machine shops, household appliance service centers, and manufacturing plants serving the American market. A reliable tool for precision threading.
Frequently asked questions
5/16 inch is exactly 7.94 mm. Conversion factor: 1 inch = 25.4 mm. Calculation: 25.4 mm × 5 ÷ 16 = 7.94 mm.
The Unified system consists of: UNF – fine threads, UNEF – extra fine threads, UNS – special nonstandard threads, and UN – constant-pitch threads: 4, 6, 8, 12, 16, 20, 28, or 32 threads per inch.
UNC threads have a coarser pitch and fewer threads per inch than UNF threads. At a diameter of 5/16 inch, UNC has 18 threads per inch and UNF has 24 threads per inch. Identification is performed using thread pitch gauges.
Product accessories
UNC 5/16-18 DIN 371 C HSSE threader
Reference: 0000004062 In stock < 10 items
€10.53
€12.95 brutto
Hand tap UNC 5/16-18 DIN 352/3 HSS 2B
Reference: 0000006469 In stock > 10 items
€10.00
€12.30 brutto
Thread ring gauge UNC 5/16-18 2A GO NO-GO
Reference: 15402 In stock < 10 items
€44.74
€55.03 brutto
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Shipping
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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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