Dimensional Tolerances (MSS)
MSS SP-43
　 　 　 90 Elbows Reducers 　 　 　 　 Lap-Joint Stub Ends
　 All Fittings 45 Elbows Lap-Joint 180 Returns Caps
Nominal 　 　 Tees Stub Ends 　 　 　 　
Pipe Outside 　 　 　 Center- Back- Align- 　 　 　
Size Diameter  Wall Center-to- Overall to- to- ment Overall Fillet(b) Outside
　 at Thick- End Length Center Face of Length Radius Diameter
　 Welding ness 　 　 　 　 Ends 　 of Lap of Lap
　 End(a) 　 A-B-C-M F-H O K U E A G
½~1½ ＼0.03                        (＼0.8) ＼0.06                              (＼1.6) ＼0.25                 (＼6.4) ＼0.25                 (＼6.4) ＼0.03                        (＼0.8) ＼0.12                            (＼3.2) 　 　
+0 　
-0.03 　
　
2~3½ (+0) +0
(-0.8) -0.03
Not 　 　
less 　 (+0)
　 than 　 (-0.8)
4 87.5% 　 　
of 　 　
　 nominal 　
　 +0.06 thick- ＼0.25                 (＼6.4) +0 　
 5~8 -0.03 ness -0.06 　
(+1.6) 　 　 　
　 (-0.8) 　 (+0) 　
　 +0.09 　 ＼0.09                                        (＼2.4) ＼0.38               (＼9.6) ＼0.06                              (＼1.6) (-1.6) 　
10~18 -0.03 　 +0
(+2.4) 　 　 -0.06
　 (-0.8) 　 　 　
20~24 +0.12 　 　 (+0)
-0.03 　 　 (-1.6)
(+3.2) 　 　 　
(-0.8) 　 　 　
　 　 　 　 　 　 　 　 　 　 　
GENERAL NOTE:
All dimensions are in inches. Dimensions in parentheses are in millimeters for reference only.
NOTES:
(a) Out of roundness is the vector sum of plus and minus tolerance.
(b) Fillet B radius is maximum. See the table on page 15.