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		                        | National Stock Number:
 5305-01-312-4313
 
 Federal Supply Class:
 5305
 
 National Item Identification Number:
 013124313
 
 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:
 
 | 136764-1 | 37695 | RAYTHEON COMPANY |  | NT521R0632EC4 | 02310 | PATTONAIR USA INC | 
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 Techincal Specification:
 
 | COUNTERSINK ANGLE | 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |  | FASTENER LENGTH | 0.152 INCHES MINIMUM AND 0.197 INCHES MAXIMUM |  | FEATURES PROVIDED | O RING |  | HEAD DIAMETER | 0.287 INCHES MINIMUM AND 0.298 INCHES MAXIMUM |  | HEAD STYLE | FLAT COUNTERSUNK |  | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |  | NOMINAL THREAD DIAMETER | 0.138 INCHES |  | SCREW MATERIAL | NICKEL ALLOY |  | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |  | SCREW SURFACE TREATMENT | PASSIVATE |  | SPECIAL FEATURES | O-RING MATERIAL SILICONE RUBBER PER AMS 3304 |  | THREAD CLASS | 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.090 INCHES MINIMUM AND 0.197 INCHES MAXIMUM |  | THREAD QUANTITY PER INCH | 32 |  | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | 
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