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Description
Technical data for the UNEF 3/8-32 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNEF 3/8-32 | |
| Thread Pitch P in Inches and mm | 32 threads per inch | 0.79 mm |
| Thread Diameter mm / Decimal | 9.53 mm / 0.375 in | |
| Outside Diameter d2 | 38 mm | |
| Thickness h1 | 10 mm | |
| Number of Chip Holes | 5 | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |

Die UNEF 3/8-32 HSS – inch die with the finest threads
UNEF 3/8-32 die is a precision tool for producing external threads with an extra fine pitch to the American Extra Fine standard. Manufactured from high-speed steel (HSS) in accordance with DIN 22568, it cuts threads with a diameter of 3/8 inch (9.53 mm) and a pitch of 32 threads per inch – the maximum value in the UNEF system.
Main advantages of the UNEF 3/8-32 die
- Maximum thread density of 32 TPI – the finest threads providing extreme precision and resistance to loosening
- HSS construction – capable of machining steels with strengths up to 800 MPa and aluminum alloys
- Tolerance class 2A according to ANSI B1.1 – guaranteed accuracy for precision fits
- 60° profile – conformity with all threads in the Unified family
- DIN 22568 – universal fit for die holders and threading heads
UNEF 3/8 die is used in the aerospace industry, test and measurement equipment, and precision optics. A diameter of 9.53 mm with a pitch of 32 TPI is the choice for joints requiring the highest stability under vibration.
Frequently asked questions
A diameter of 3/8 inch equals 9.53 mm. The inch-to-millimeter conversion factor is 25.4 mm. Calculation: 0.375 × 25.4 = 9.53 mm.
UNEF (Extra Fine) features the finest pitch in the Unified family. UNC is coarse, UNF is fine, and UNEF is extra fine. For a size of 3/8 inch: UNC has 16 TPI, UNF has 24 TPI, and UNEF reaches 32 TPI.
The Unified system also includes: UNC – the coarse-thread version, UNF – the fine-thread version, UNS – special nonstandard threads, and UN – series with a constant thread count: 4, 6, 8, 12, 16, 20, 28, or 32 per inch.
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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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