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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SPACER , STEPPED

Definition:

A TUBULAR SHAPED ITEM WITH A ROUND OR HEXAGON PERIPHERAL SHAPE HAVING TWO FLAT BEARING SURFACES PERPENDICULAR TO THE AXIS OF THE CENTRALLY LOCATED HOLE. IT IS DESIGNED TO MAINTAIN A PREDETERMINED DISTANCE BETWEEN ASSEMBLED PARTS. THE ITEM MAY BE WITH OR WITHOUT FLANGE(S) OF ANY PERIPHERAL SHAPE. THE LENGTH MUST EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER OR DISTANCE ACROSS PERIPHERAL FLATS. (WHEN THE LENGTH, OUTSIDE DIAMETER, AND/OR DISTANCE ACROSS PERIPHERAL FLATS ARE DESIGNATED AS A TOLERANCE, THE MAXIMUM DIMENSION WILL BE USED TO DETERMINE COMPLIANCE.) IT MUST HAVE ONE OR MORE INTERNAL STEPS (COUNTERBORES) AND/OR EXTERNAL STEPS ON EITHER OR BOTH BEARING SURFACES. EXCLUDES SPACER, OPTICAL ELEMENT. SEE ALSO WASHER, RECESSED AND WASHER, SHOULDERED AND RECESSED.

CAGE Information

Code Company
15605 EATON CORP OPNS & TECHNICAL CENTER

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
BZBR FIRST LEFT COUNTERBORE DEPTH 0.998 INCHES MINIMUM AND 1.104 INCHES MAXIMUM
BZBR FIRST LEFT COUNTERBORE DEPTH 0.998 INCHES MINIMUM AND 1.104 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION MIL-M-16576,ALLOY 903 MIL SPEC SINGLE MATERIAL RESPONSE
ABHP OVERALL LENGTH 2.000 INCHES NOMINAL
BZCG RIGHT KEYWAY DEPTH 0.687 INCHES NOMINAL
ADAS BODY INSIDE DIAMETER 3.062 INCHES MAXIMUM
CZEY FIRST LEFT COUNTERBORE INSIDE DIAMETER 3.375 INCHES MAXIMUM
STYL STYLE DESIGNATOR STEPPED SPACER
BZCB SECOND RIGHT STEP WIDTH 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM
BZCF RIGHT KEYWAY WIDTH 0.500 INCHES NOMINAL
CZFF SECOND RIGHT STEP OUTSIDE DIAMETER 4.087 INCHES MAXIMUM
ADAR BODY OUTSIDE DIAMETER 4.330 INCHES MAXIMUM
MATT MATERIAL COPPER ALLOY 903

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