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Description
Technical data for the 1/2-13 UNC machine tap for through holes
| Technical data | |
|---|---|
| nominal diameter d1 | 1/2-13 |
| thread pitch P | 13 threads per inch |
| overall length l1 | 110 mm |
| flute length l2 | 24 mm |
| square drive size | 7 mm |
| tap drill diameter | 10.8 mm |
| Chamfer | B (4÷5) P |
| Shank diameter d2 | 9 mm |
How the type B through-hole chamfer pushes chips down the hole
Chips exit at the bottom instead of returning through the thread
Through-hole chamfer B has a chip breaker at the front of the tap – an angled grind on the cutting edges. The chip breaker directs chips down the hole, ahead of the tap tip. The chips curl into coils, break into short pieces, and exit the hole on the other side of the workpiece. The threads already cut stay clean because chips do not pass through them on their way upward. The UNC 1/2-13 tap has a reduced shank in accordance with DIN 376: diameter 9 mm, square 7 mm.
1
Straight flute – chips do not enter it; the flute carries lubricant to the cutting edges.
2
The chip breaker at the tip of the tap directs chips down the hole.
3
The tap rotates clockwise to cut a right-hand thread.
4
B chamfer: 4–5 incomplete threads on the entry taper.
5
The chips break into segments: individual pieces at the top of the hole, with progressively more farther down. They fall out below the workpiece.
6
The UNC 1/2-13 thread has 13 threads per inch; the feed is approximately 1.954 mm/rev.
1/2-13 UNC machine tap for stainless steel
Professional 1/2-13 UNC machine tap with an extended shank for cutting Unified coarse threads, type UNC 1/2-13. These are American Unified parallel threads with a triangular profile (60° angle). The tolerance class of the finished threads is 2B. Chamfer type B – for tapping short through holes. Our range includes Unified machine taps manufactured from modern high-speed steel HSSE (High Speed Steel). This exceptional material enables substantially higher cutting parameters, including increased cutting productivity and thus shorter machining time. In addition, high-speed steel significantly expands the range of materials that can be machined. These include unalloyed (carbon) steels, metals, nonferrous metals, metal alloys and plastics. 1/2-13 UNC machine taps also withstand demanding cutting conditions, and their cutting edges rarely suffer breakage, cracking, spalling, edge fracture or dulling. The taps are intended for individual customers and large companies.
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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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