ISO 3601
Grade S - Special (aerospace)
SIZE TOLERANCE
Size Tol.	See chart ISO 3601-1
Flash Extension/P.L. Projection
Flash Thickness
Off register/Mismatch		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Max.
	1.8 mm	0.08 mm
	2.65 mm	0.08 mm
	3.55 mm	0.10 mm
	5.3 mm	0.12 mm
	7.0 mm	0.13 mm
Combined Flash, Offset and Parting Line Projection		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Max.
	1.8 mm	0.10 mm
	2.65 mm	0.10 mm
	3.55 mm	0.13 mm
	5.3 mm	0.15 mm
	7.0 mm	0.15 mm
DEFECT TOLERANCE
	ISO 3601
Flats	Departure from a circular cross-section due to trimming is allowed provided that the resultant surface is smoothly blended and is within the size tolerance limits for cross section ISO 3601-1
Backrind		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Depth	Width
	1.8 mm	0.05 mm	0.10 mm
	2.65 mm	0.08 mm	0.15 mm
	3.55 mm	0.10 mm	0.20 mm
	5.3 mm	0.10 mm	0.20 mm
	7.0 mm	0.13 mm	0.30 mm
P.L. Indentation		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Depth	Width
	1.8 mm	0.08 mm	0.15 mm
	2.65 mm	0.08 mm	0.25 mm
	3.55 mm	0.10 mm	0.40 mm
	5.3 mm	0.10 mm	0.63 mm
	7.0 mm	0.13 mm	1.00 mm
Foreign Material	Not Permitted
Inclusions
(depression left from foreign material)
Indentations		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Depth	Width
	1.8 mm	0.08 mm	0.15 mm
	2.65 mm	0.08 mm	0.25 mm
	3.55 mm	0.10 mm	0.40 mm
	5.3 mm	0.10 mm	0.63 mm
	7.0 mm	0.13 mm	1.00 mm
Non Fill		Maximum Acceptable Dim.
		Grade S
	Material Cross Section	Depth	Width
	1.8 mm	0.08 mm	0.15 mm
	2.65 mm	0.08 mm	0.25 mm
	3.55 mm	0.10 mm	0.40 mm
	5.3 mm	0.10 mm	0.63 mm
	7.0 mm	0.13 mm	1.00 mm
Mold Deposit Defects
(Indentations)