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Description
Technical data for the UNS 1/2-20 die
| Technical data | ||
|---|---|---|
| Nominal Diameter d1 Inches/mm/Decimal | UNS 1/2-20 | |
| Thread Pitch P in Inches and mm | 20 threads per inch | 1.27 mm |
| Thread Diameter mm / Decimal | 12.7 mm / 0.5 in | |
| Outside Diameter d2 | 38 mm | |
| Thickness h1 | 10 mm | |
| Thread angle G | 60° | |
| Thread Standard | ANSI B-1.1 | |
American die UNS 1/2-20 HSS – professional tool for Unified special threads
Die UNS 1/2-20 is a precision cutting tool for producing external inch threads with a versatile diameter and a special pitch. UNS (Unified National Special) denotes a thread with a special combination of diameter and pitch that is not available 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 1/2-20 die
- Pitch of 20 TPI (1.270 mm) – special pitch providing a balance between strength and precision
- 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
- Versatile diameter of 1/2 inch (12.70 mm) – the most popular size for a wide range of applications
The UNS 1/2-20 inch threading die is used in the machinery and automotive industries and fastener manufacturing. The American UNS 1/2-20 die is the choice of professionals requiring a nonstandard pitch for special connections. Order a tool that meets the highest quality standards.
Frequently asked questions
One inch is exactly 25.4 mm. For the UNS 1/2-20 thread, the calculation is: 1/2 × 25.4 mm = 12.70 mm diameter. A pitch of 20 TPI gives: 25.4 mm ÷ 20 = 1.270 mm.
The UNC 1/2 thread has 13 TPI, and UNF 1/2 has 20 TPI. The UNS 1/2-20 thread matches the UNF pitch but is classified as special due to its nonstandard applications.
The UNS 1/2-20 thread is used in the automotive, aerospace, and machinery industries. It is used where greater connection strength than standard UNC is required.
Product accessories
Hand tap UNF 1/2-20 DIN 2181/2 HSS 2B Fra
Reference: 0000007807 In stock > 10 items
€13.16
€16.18 brutto
Thread ring gauge UNF 1/2-20 2A GO NO-GO
Reference: 15415 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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