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		                        | National Stock Number:
 3020-00-340-7161
 
 Federal Supply Class:
 3020
 
 National Item Identification Number:
 003407161
 
 Description:
 GEAR CLUSTER
 
 Detail:
 A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see GEARSHAFT (as modified). Excludes GEAR SUBASSEMBLY, SPEED DECREASER.
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 Manufacturer Information:
 
 | 117D2396 | 05606 | GENERAL DYNAMICS-OTS, INC. |  | 117D2396 | 25180 | NATIONAL GEAR PRODUCTS INC | 
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 Techincal Specification:
 
 | DESIGN TYPE | SPUR SECOND GEAR |  | DESIGN TYPE | SPUR FIRST GEAR |  | BORE STYLE | INVOLUTE SPLINE BOTH ENDS |  | BORE NOMINAL DIAMETER | 0.577 INCHES BOTH ENDS |  | CONSTRUCTION | SOLID |  | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM OVERALL AND 35.0 ROCKWELL C MAXIMUM OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624,COMP 4140 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | HUB NOMINAL DIAMETER | 1.700 INCHES BETWEEN FIRST AND SECOND GEAR |  | HUB NOMINAL LENGTH | 0.110 INCHES BETWEEN FIRST AND SECOND GEAR |  | HUB STYLE DESIGNATOR | PLAIN BETWEEN FIRST AND SECOND GEAR |  | III MATERIAL | STEEL COMP 4140 OVERALL |  | PROPRIETARY CHARACTERISTICS | PACS |  | NOMINAL OUTSIDE DIAMETER | 2.222 INCHES SECOND GEAR |  | NOMINAL OUTSIDE DIAMETER | 2.766 INCHES FIRST GEAR |  | NOMINAL OVERALL LENGTH | 0.510 INCHES |  | SPECIAL FEATURES | CENTER OF 1ST END RECESSED AND WEBBED,2ND END WEBBED |  | SPLINE PITCH DIAMETER | 0.5313 INCHES NOMINAL BOTH ENDS |  | SPLINE QUANTITY | 17 BOTH ENDS |  | SURFACE TREATMENT | PASSIVATE OVERALL | 
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