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 |
---|---|---|---|---|---|---|---|---|
J3-7427 | 99121 | A | 3 | 2 | 2 | SB | ||
ST7M342-15 | 76301 | A | 7 | 2 | 2 | SB |
CAGE Information
Code | Company |
---|---|
76301 | BOEING COMPANY THE DBA BOEING |
99121 | PRECISION RINGS INCORPORATED |
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 |
ACXD | RING STYLE | CONCENTRIC |
AAGR | CROSS-SECTIONAL SHAPE STYLE | PLAIN RECTANGULAR, STRAIGHT FACE |
ADTE | JOINT STYLE | VERTICAL JOINT |
MATT | MATERIAL | CRES STEEL 420 AMS5621 FSCM 81343 OVERALL |
ACXJ | OVERALL WIDTH | 0.1220 INCHES MINIMUM AND 0.1230 INCHES MAXIMUM |
ACXF | RADIAL WALL THICKNESS | 0.0500 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM |