National Stock Number (NSN) Output Data
NSN:
NIIN:
Item Name:
RING , PISTON
Definition:
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.
Reference/Part Number
| Part Number | CAGE | Status | RNCC | RNVC | DAC | RNAAC | MSDS | SADC |
|---|---|---|---|---|---|---|---|---|
| MD31623-163 | K0349 | R | 5 | 9 | 1 | KE | ||
| MD31623-163 | U1918 | A | 3 | 2 | 1 | ZZ |
CAGE Information
| Code | Company |
|---|---|
| K0349 | M L AVIATION LTD INCORPORATING M L W |
| U1918 | FLIGHT REFUELLING LIMITED T/A COBHAM |
Federal Supply Class
Title
GASOLINE RECIPROCATING ENGINES,
Inclusions:
INCLUDES GAS RECIPROCATING ENGINES; ALL GASOLINE RECIPROCATING ENGINES EXCEPT AIRCRAFT PRIME MOVING.
Exclusions:
EXCLUDES ENGINE ACCESSORIES (FSC 2990).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ACXD | RING STYLE | CONCENTRIC |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | PLAIN RECTANGULAR, STRAIGHT FACE |
| FEAT | SPECIAL FEATURES | RING |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| ACXF | RADIAL WALL THICKNESS | 0.0380 INCHES NOMINAL |
| ADTE | JOINT STYLE | VERTICAL/DIAGONAL JOINT |
| ACXZ | STANDARD BORE DIAMETER | 0.553 INCHES AND 0.558 INCHES |
| ACXJ | OVERALL WIDTH | 0.0570 INCHES MINIMUM AND 0.5900 INCHES MAXIMUM |
| CQKZ | OIL PASSAGE TYPE AND QUANTITY | 1 SLOT VERTICALLY THROUGH RING |