THREADING
R Y Y R Y
U-Type
X
IR/L-UN (continued) x X di
Internal American UN Full Profile l l l
(UN, UNC, UNF, UNEF) Laydown
Threading Inserts for General Industry di
di
Internal left-hand shown
NUT
Dimensions Tough 1 Hard
1/4 P
60°


IC1007
IC50M
1/8 P


IC228
IC928


IC250


IC508
IC808
IC908
SCREW


IC08
Designation di TPI l R X Y Z(3)
16IRB 12 UN (1) 9.53 12.0 16.00 0.12 1.1 1.4 1 •
16IRM 12 UN (1) 9.52 12.0 16.00 0.12 1.1 1.4 1 • • • •
16IR 11.5 UN 9.52 11.5 16.00 0.13 1.1 1.5 1 •
16IR 11 UN 9.52 11.0 16.00 0.14 1.1 1.5 1 • • •
16IR/L 10 UN 9.52 10.0 16.00 0.15 1.1 1.5 1 • • •
16IRB 10 UN (1) 9.52 10.0 16.00 0.15 1.1 1.5 1 •
16IR 9 UN 9.52 9.0 16.00 0.17 1.2 1.7 1 •
16IR/L 8 UN 9.52 8.0 16.00 0.19 1.1 1.5 1 • • • • •
16IRB 8 UN (1) 9.52 8.0 16.00 0.19 1.1 1.5 1 •
16IRM 8 UN (1) 9.52 8.0 16.00 0.20 1.1 1.5 1 • • • •
22IR 16 UN 3M (2) 12.70 16.0 22.00 0.09 2.5 4.0 3 •
22IR 12 UN 2M (2) 12.70 12.0 22.00 0.12 2.2 3.4 2 •
22IR 12 UN 3M (2) 12.70 12.0 22.00 0.12 3.3 5.3 3 •
22IR/L 7 UN 12.70 7.0 22.00 0.22 1.6 2.3 1 • • •
22IR 6 UN 12.70 6.0 22.00 0.26 1.6 2.3 1 • • •
22IR 5 UN 12.70 5.0 22.00 0.32 1.6 2.3 1 • • •
22UIRL 4.5 UN 12.70 4.5 22.00 0.36 2.4 11.0 1 •
22UIRL 4 UN 15.88 4.0 22.00 0.36 2.4 11.0 1 •
27IR 8 UN 2M (2) 15.88 8.0 27.00 0.19 3.1 4.9 2 •
27IR 4.5 UN 15.88 4.5 27.00 0.36 1.7 2.4 1 •
27IR/L 4 UN 15.88 4.0 27.00 0.41 1.8 2.7 1 • • •
• For Insert Identification System, see page 489 • Tolerance: class 2B,ANSI B1, 3M-1986. • For technical information and detailed cutting data, see
pages 536-546 • For recommended number of passes for multi-tooth inserts see page 544
(1) With pressed chipformer.
(2) Multi-tooth
(3) Number of teeth per corner.
For tools, see pages: MGSIR/L (534) • SIR/L (531)


505