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		                        | National Stock Number:
 3040-01-042-9062
 
 Federal Supply Class:
 3040
 
 National Item Identification Number:
 010429062
 
 Description:
 RING,PISTON
 
 Detail:
 A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.
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 Manufacturer Information:
 
 | 12007789 | 19200 | US ARMY ARDEC RDECOM |  | 477-1006 | 99121 | PRECISION RINGS INCORPORATED | 
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 Techincal Specification:
 
 | MATERIAL | ALUMINUM ALLOY OVERALL |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-450 FED SPEC ALL MATERIAL RESPONSES OVERALL |  | CROSS-SECTIONAL SHAPE STYLE | PLAIN RECTANGULAR, STRAIGHT FACE |  | JOINT STYLE | STEP JOINT |  | RING STYLE | CONCENTRIC |  | RADIAL WALL THICKNESS | 0.1200 INCHES NOMINAL |  | OVERALL WIDTH | 0.2490 INCHES MINIMUM AND |  |  | 0.2500 INCHES MAXIMUM |  | STANDARD BORE DIAMETER | 5.760 INCHES |  | SPECIAL FEATURES | USED ON 3040-01-038-6013 |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 19200 |  | DESIGN CONTROL REFERENCE | 12007789 | 
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