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Description
Technical data for the 9/16-12 UNC machine tap
| Technical data | |
|---|---|
| nominal diameter d1 | 9/16-12 |
| thread pitch P | 12 threads per inch |
| overall length l1 | 110 mm |
| flute length l2 | 25 mm |
| shank diameter d2 | 11 mm |
| square drive size a | 9 mm |
| tap drill diameter | 12.2 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 9/16-12 tap has a reduced shank to DIN 376: diameter 11 mm, square 9 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 9/16-12 thread has 12 threads per inch; the feed is approximately 2.117 mm/rev.
9/16-12 UNC American machine tap for stainless steel
Product accessories
UNC 9/16-12 HSS DIN 22568 buttonhole
Reference: 0000005752 In stock < 10 items
€9.21
€11.33 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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