|  | 
                            
                                |   | 
		                    
		                        | National Stock Number:
 5310-99-680-0061
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 996800061
 
 Description:
 WASHER,FLAT
 | 
		                    
		                        | 
 Manufacturer Information:
 
 | SP126E | K7766 | BRITISH STANDARDS INSTITUTION | 
 | 
				            
					            | 
 Techincal Specification:
 
 | CENTER HOLE SHAPE STYLE | ROUND |  | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |  | HARDNESS RATING | 21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM |  | HOLE DIAMETER | 0.267 INCHES MINIMUM AND 0.277 MILLIMETERS MAXIMUM |  | MATERIAL | STEEL OVERALL |  | PERIPHERAL SHAPE STYLE | ROUND |  | OVERALL DIAMETER | 0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM |  | SPECIAL FEATURES | NO ADDITIONAL MANUFACTURERS REFERENCE SHOULD BE ADDED TO THIS NSN RECORD UNLESS APPROVED FOR KC-46 PROGRAM REQUIREMENTS;AS DIFFERENTIATED BY ITEM IS FAA CERTIFIED |  | SURFACE TREATMENT | CADMIUM OVERALL |  | THICKNESS | 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM | 
 |