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USER GUIDE
TAPS Tap Designation Code Key

TPG UNC 1/4-20 M HE Ti

B - Bore Coating
Tap Style
for Coolant Types*
TPH - Hand Tap D- TPI (on request) Ni - Nitriding
TPF - Forming Tap D- Pitch Ti - TiN
TPG - Gun Point TC - TiCN
TPS - Spiral Flute TA - TiAlN
TPST - Straight Flute St - Black Oxide
* On request

Thread Standard Tap Color Codes (1) Tap Materials
M - ISO Metric M - Multi-Material Application HS - H.S.S. (M2)
Coars Thread
DIN-13
MF - ISO Metric W - Steel with Good Machinability HE - H.S.S- E 5% Co.
Fine Thread Rm<750 N/mm 2 HSS (M35)
DIN-13
UNF - Unfied Fine S - Stainless Steel PM - Compacted Powder
Thread
UNC - Unfied Coarse H - Hardened Steel and High Temp./ HM - Solid Carbide
Thread Super Alloys Rm>750 N/mm 2
G - Grey Cast Iron

N - Low Alloy Steel Rm<600 N/mm 2

A - Aluminum and Aluminum Alloys

F - Any Material with at least
8~10% Elongation
(1) The tools have a matching colored
ring around the shank

Chamfer Lead According to DIN2197 (specified for each tool family)
A Form A (Chamfer Lead 5-6 Threads)
B Form B (with Gun-Nose and Chamfer Lead 4-5 Threads)

C Form C (Chamfer Lead 2-3 Threads)

D Form D (Chamfer Lead 4-5 Threads)
E Form E (Chamfer Lead 1.5-2 Threads)

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