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Description
Technical data for the UNF 5/16-24 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNF 5/16-24 | |
| Thread Pitch P in Inches and mm | 24 threads per inch | 1.06 mm |
| Thread Diameter mm / Decimal | 7.94 mm / 0.3125 in | |
| Outside Diameter d2 | 25 mm | |
| Thickness h1 | 9 mm | |
| Number of Chip Holes | 5 | |
| Required Shaft Diameter | 7.82 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
UNF 5/16-24 HSS die – an inch fine-thread die for Unified threads
UNF 5/16-24 die is a professional tool for cutting external threads to the American fine thread standard. Made of high-speed steel (HSS) in accordance with DIN 22568, the tool provides precise threading with a diameter of 5/16 inch (7.94 mm) and a pitch of 24 threads per inch on rods, shafts, and fasteners.
Key benefits of the UNF 5/16-24 inch die
- High-precision fine thread – the finer pitch (24 TPI) provides more precise adjustment and better vibration resistance than UNC
- Highly durable HSS steel – enables machining of structural steels up to 800 MPa, aluminum, and brass
- Tolerance 2A in accordance with ANSI B1.1 – standard accuracy class ensuring proper fit with American screws
- Thread angle 60° – provides high mechanical strength of the threaded joint
- Compliance with DIN 22568 – verified manufacturing quality and dimensional repeatability
UNF 5/16 die is suitable for workshops servicing imported machinery, the aerospace industry, and the American automotive sector. UNF threads are selected where greater precision and resistance to loosening are required. Order this essential tool for working with fine inch threads.
Frequently asked questions
The dimension 5/16 inch corresponds to 7.94 mm. The conversion factor is 25.4 mm per inch. Multiplying 0.3125 by 25.4 gives the result in millimeters.
UNF has more closely spaced threads than UNC. For a diameter of 5/16 inch, UNF has 24 threads per inch, while UNC has only 18. The fine thread version is selected when precise adjustment and operation under vibration are required.
The Unified system also includes: UNC – the coarse thread version, UNEF – the extra fine thread version, UNS – special nonstandard threads, and UN – series with a constant thread count of 4, 6, 8, 12, 16, 20, 28, or 32 per inch.
Product accessories
Thread ring gauge UNF 5/16-24 2A GO NO-GO
Reference: 15412 In stock < 10 items
€50.00
€61.50 brutto
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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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