4730-00-720-3985 REDUCER,BOSS Index 4820-00-720-3991 VALVE,CHECK

National Stock Number:
5365-00-720-3990

Federal Supply Class:
5365

National Item Identification Number:
007203990

Description:
SHIM

Detail:
A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use DISK, SOLID, PLAIN. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see SPACER, PLATE; WASHER, FLAT and SPACER, RING. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also SHIM STOCK, LAMINATED; SHIM STOCK ASSORTMENT, GASKET; and BEARING, WASHER, THRUST.


Manufacturer Information:
720399018877WATERTOWN ARSENAL SMIWT-RE


Techincal Specification:
APERTURE DIAMETER1.182 INCHES MINIMUM AND 1.187 INCHES MAXIMUM
CONSTRUCTIONLAMINATED
FEATURES PROVIDEDSEPARABLE
LAMINATION QUANTITY6
LAMINATION THICKNESS0.002 INCHES NOMINAL AND 0.003 INCHES NOMINAL AND 0.010 INCHES NOMINAL AND 0.109 INCHES NOMINAL
OUTSIDE DIAMETER1.500 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698,COND CRCQ,T2 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL
SPECIAL FEATURES1/16 BY 45 DEG CHAMFER ON ID OF THICKEST LAMINATION AND 32 MICROINCHED RMS FINISH ON FLAT BEARINGS SURFACES OF THICKEST LAMINATION
STYLE DESIGNATORCIRCULAR


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