Part Number
Definition:
A CIRCULAR-SHAPED ITEM DESIGNED TO MAINTAIN PREDETERMINED DISTANCE BETWEEN ASSEMBLED PARTS AND/OR FOR DISTRIBUTING PRESSURE OR PREVENTING ENDWISE MOVEMENT BETWEEN MEMBER PARTS. IT HAS A SOLID CROSS-SECTION AND TWO FLAT PARALLEL BEARING SURFACES. THE DISTANCE BETWEEN THE BEARING SURFACES PERPENDICULAR TO THE AXIS OF THE CENTRALLY LOCATED HOLE SHALL NOT EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER. THE DIAMETER OF THE CENTRALLY LOCATED HOLE MUST EXCEED 75 PERCENT OF THE OUTSIDE DIAMETER. EXCLUDES LAMINATED ITEMS. FOR ITEMS MANUFACTURED FROM IMPREGNATED GRAPHITE OR LUBRICATED NONMETALLIC MATERIALS, EXCLUDING FELT OR PLASTICS, SEE GASKET. FOR ITEMS MANUFACTURED FROM LUBRICATED PLASTICS, SEE BEARING, WASHER, THRUST. FOR ITEMS MANUFACTURED FROM LUBRICATED FELT, SEE FELT, MECHANICAL, PREFORMED. EXCLUDES DISK, VALVE; INSULATOR WASHER; AND SHIM. SEE ALSO SPACER, PLATE AND SPACER, SLEEVE.
CAGE Information
| Code | Company |
|---|---|
| 3H172 | STERLING MACHINE CO |
Federal Supply Class
Title
BUSHINGS, RINGS, SHIMS, AND SPAC
Inclusions:
INCLUDES EXTERNALLY THREADED RINGS; KEYED AND SERRATED LOCK RINGS; DEE RINGS; INSTRUMENT RETAINING RINGS; SHIM SETS AND ASSORTMENTS; PLATE SPACERS; RING SPACERS; SLEEVE SPACERS; STEPPED SPACERS; SPACER SETS AND ASSORTMENTS; SLEEVE BUSHINGS; MACHINE THREADED BUSHINGS; MACHINE THREADED PLUGS.
Exclusions:
EXCLUDES SLEEVE BEARINGS (FSC 3120); PIPE THREADED PLUGS (FSC 4730); PISTON RINGS (FSC 2520, 2805, 2810, 2815, 2825, 2990, 3040, 4310, AND 4820); RETAINING RINGS (FSC 5325); SHIM STOCK (FSC 9515).
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| AARX | INSIDE DIAMETER | 2.820 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | OXIDE |
| CSYM | SURFACE FINISH | 125.0 MICROINCHES OVERALL |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| ADUM | OVERALL THICKNESS | 0.089 INCHES MINIMUM AND 0.091 INCHES MAXIMUM |
| ABHE | OUTSIDE DIAMETER | 3.326 INCHES MINIMUM AND 3.328 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE |
| MATT | MATERIAL | STEEL COMP 4340 |