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		                             National Stock Number: 5305-01-189-7425
  Federal Supply Class: 5305
  National Item Identification Number: 011897425
  Description: SCREW,MACHINE
  Detail: An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD. 
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  Manufacturer Information:
 | NAS5303-13 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |   
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  Techincal Specification:
 | FASTENER LENGTH | 0.810 INCHES MINIMUM AND 0.813 INCHES MAXIMUM |  | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |  | HEAD HEIGHT | 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM |  | HEAD DIAMETER | 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |  | HEAD STYLE | FLAT CHAMFER |  | INTERNAL DRIVE STYLE | TRI-WING RECESS |  | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |  | NOMINAL THREAD DIAMETER | 0.1900 INCHES |  | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY II CL 2 FED SPEC SINGLE TREATMENT RESPONSE |  | SCREW MATERIAL | STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 8740 |  | SCREW SURFACE TREATMENT | CADMIUM |  | SPECIFICATION/STANDARD DATA | 80205-NAS5303 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |  | THREAD CLASS | 3A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.810 INCHES MINIMUM AND 0.813 INCHES MAXIMUM |  | THREAD QUANTITY PER INCH | 32 |  | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |   
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