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MT LNHT and MT LNHU – Designation Code Key:
MT LNHU 21 04 I 1.5 ISO IC908
1 2 3 4 5 6 7
MT – MILLTHREAD family THREAD MILLING
1 Number of cutting edges
LNHT — Single-sided
LNHU — Double-sided
2 Insert length (INSL)
INSL
3 Insert thickness (S1)
S1
4 Thread gender
I — Internal thread
E — External thread
5 Pitch Value by number:
1.0 – 6.0 mm
4 - 32 TPI
6 Thread standard
ISO — ISO Metric
UN — American UN
W — Whitworth
BSPT — British BSPT
NPT — National pipe thread
NPTF — National pipe taper fuel
7 Grade
IC908
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