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NSN 3120-00-031-1228, 3120000311228
BEARING,PLAIN,SELF-ALIGNING

Federal Supply Classification
FSC 3120 - Bearings, Plain, Unmounted
National Item Identification Number
NIIN 000311228
Codification Country
United States
Item Name Code
INC 13208
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 3120-00-031-1228

National Stock Number (NSN) 3120-00-031-1228, or NIIN 000311228, (bearing,plain,self-aligning) was assigned October 28, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 5 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Feb 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 13208. [A DETACHABLE ASSEMBLY IN OR ON WHICH A JOURNAL, GUDGEON, PIVOT, OR THE LIKE MOVES. IT IS USED TO CARRY A LOAD AND TO REDUCE SLIDING FRICTION. IT DOES NOT EMPLOY ROLLING ELEMENTS. THE ITEM CONSISTS OF A BORED PRECISION GROUND BALL (OR SPHERICAL PLAIN BEARING) AROUND WHICH AN OUTER RING IS FITTED. THE ASSEMBLY MAY BE EITHER SEPARABLE OR NONSEPARABLE. EXCLUDES:BEARING, PLAIN, ROD END AND BEARING, PLAIN, SPHERICAL.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3120000311228 contains an unknown precious metal.

This NSN is associated to Schedule B 8482300040: spherical roller bearings, single row. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332991: ball and roller bearing manufacturing.

This information was last updated on .


Technical Characteristics

BORE DIAMETER
(ABXV) 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM
HARDNESS RATING
(CQFM) 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
INNER MEMBER WIDTH
(AGGJ) 1.4540 INCHES MINIMUM AND 1.4590 INCHES MAXIMUM
OUTER MEMBER OUTSIDE DIAMETER
(AGGF) 1.5620 INCHES MINIMUM AND 1.5625 INCHES MAXIMUM
OUTER MEMBER WIDTH
(AGGH) 0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM
MATERIAL
(MATT) STEEL COMP 440C INNER MEMBER
MATERIAL
(MATT) STEEL COMP 630 OUTER RACE MEMBER
STATIC RADIAL LOAD RATING
(AGKP) 40000 POUNDS
STYLE DESIGNATOR
(STYL) WITHOUT INSERT OR LINER WITH STAKING GROOVE
SURFACE TREATMENT
(SFTT) CHROMIUM INNER MEMBER

Manufacturer Part Numbers


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