HAVING 0.248 TO 0.256 INCHES COUNTERSUNK HOLE 0.28 INCHES DEEP LOCATED ON FLANGE FLAT SURFACE ;ALSO HAVING TWO 0.186 TO 0.194 INCH COUNTERSUNK HOLES 0.09 INCHES LOCATED ON OUTSIDE EDGE OF FLANGE
MDCL
MATERIAL DOCUMENT AND CLASSIFICATION
ASTM B-26/B-26M. T-5 TEMPER ASSN STD SINGLE MATERIAL RESPONSE OVERALL