100 ZINC COATED SPLIT HELICAL-RIGHT HAND WASHERS 01904, 5310-00-856-8465 NOS PART NUMBER: 01904, 5035 NSN: 5310-00-856-8465 NOS MRC Requirements Reply AAUB HOLE DIAMETER 0.572 INCHES MINIMUM AND 0.587 INCHES MAXIMUM ABKV OUTSIDE DIAMETER 0.971 INCHES MAXIMUM ABPX MATERIAL THICKNESS 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM CQFM HARDNESS RATING 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM MATT MATERIAL STEEL COMP 1060 OVERALL OR STEEL COMP 1070 OVERALL OR STEEL COMP 1078 OVERALL OR STEEL COMP 1080 OVERALL MDCL MATERIAL DOCUMENT AND CLASSIFICATION ASTM A510 ASSN STD ALL MATERIAL RESPONSES OVERALL SFTT SURFACE TREATMENT ZINC OVERALL STYL STYLE DESIGNATOR SPLIT HELICAL-RIGHT HAND