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Description
Technical data for the 1-8 UNC machine tap
| Technical data | |
|---|---|
| nominal diameter d1 | UNC 1 inch |
| thread pitch P | 8 threads per inch |
| overall length l1 | 160 mm |
| flute length l2 | 38 mm |
| working length l3 | 30 mm |
| shank diameter d2 | 20 mm |
| square drive size | 16 mm |
| tap drill diameter | 22.25 mm |
| Chamfer | C (2÷3) P |
Where chips remain in a straight-flute tap
The flute holds the chips until the tap is reversed out
The straight flute runs parallel to the tap axis. It has no helix to convey chips upward. The chamfer cutting edges are not ground at an angle, so they do not push chips downward. Short chips break into fragments and remain in the flute beside the cutting edges that produced them. They leave the hole only when the tap is backed out. The UNC 1-8 tap has a reduced shank to DIN 376: diameter 20 mm, square 16 mm.
1
Straight flute – chips remain in the flute, next to the cutting edges that produced them.
2
Chamfer C: 2–3 incomplete threads on the tapered lead.
3
The tap rotates clockwise to cut a right-hand thread.
4
Individual fragments exit at the top, onto the workpiece surface.
5
A few fragments fall below the tip and exit through the bottom of the hole.
6
The UNC 1-8 thread has 8 threads per inch; the feed is 3.175 mm/rev.
1-8 UNC American machine tap
Professional UNC 1-8 machine tap for cutting Unified coarse inch threads. Triangular thread profile, 60° angle, chamfer type C – for through and blind holes in short-chipping materials. Finished thread tolerance class 2B, taps compliant with DIN 376. We offer high-quality Unified machine taps for individual customers and large manufacturing facilities. The tools are made from specialized high-speed steel HSSE, which ensures high machining productivity and thus reduces machining time. More efficient use of existing machine tools also lowers overall labor costs. These machine taps withstand demanding cutting conditions, ensure high threading accuracy and offer a long service life. They can cut threads in materials of classes P1.2 – P1.3.Product accessories
Metal drill bit 22.25 NWKc HSS DIN 345 Werko
Reference: 10480 In stock > 10 items
€23.68
€29.13 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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