| 
                            
                                |  |  
                                |   |  
		                        | National Stock Number:
 5305-01-298-9673
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 012989673
 
 Description:
 SCREW,CAP,SOCKET HEAD
 
 Detail:
 An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
 |  
		                        | 
 Manufacturer Information:
 
 | NAS1351N4-36 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | 
 |  
					            | 
 Techincal Specification:
 
 | THREAD SERIES DESIGNATOR | UNRF |  | NOMINAL THREAD DIAMETER | 0.250 INCHES |  | THREAD QUANTITY PER INCH | 28 |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 1.000 INCHES MINIMUM |  | FASTENER LENGTH | 2.210 INCHES MINIMUM AND |  |  | 2.250 INCHES MAXIMUM |  | MATERIAL | IRON ALLOY 660 OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR |  |  | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |  |  | 42.0 ROCKWELL C MAXIMUM OVERALL |  | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |  | HEAD STYLE | FLAT CHAMFER |  | HEAD DIAMETER | 0.365 INCHES MINIMUM AND |  |  | 0.375 INCHES MAXIMUM |  | HEAD HEIGHT | 0.244 INCHES MINIMUM AND |  |  | 0.250 INCHES MAXIMUM |  | INTERNAL DRIVE STYLE | HEXAGON |  | WIDTH ACROSS FLATS | 0.188 INCHES MINIMUM AND |  |  | 0.190 INCHES MAXIMUM |  | SPECIFICATION/STANDARD DATA | 80205-NAS1351 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | 
 |  |