Product Details | SELF-ALIGNING PLAIN BEARING

3120-00-316-8121 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.

Part Alternates: HSP81TL102, KMDB811, KMDB81-1, LDS81E111, LDS81E-111, 0382381E003, 03-823-81E-003, 4M28681, 4M286-81, 3120-00-316-8121, 00-316-8121, 3120003168121, 003168121

Bearings | Bearings, Plain, Unmounted

Supply Group (FSG) NSN Assign. NIIN
31 18 NOV 1973 00-316-8121

Drawings & Photos | NSN 3120-00-316-8121


Demand History | NSN 3120-00-316-8121

Part Number Request Date QTY Origin
3120-00-316-8121 2025-12-345 2 US
3120-00-316-8121 2025-04-114 91 Singapore
3120-00-316-8121 2025-03-80 16 United States
4M28681 2021-08-219 20 Hong Kong
3120-00-316-8121 2021-08-214 12 AE
3120-00-316-8121 2021-07-189 12 TH
3120-00-316-8121 2021-07-189 12 TH
4M28681 2021-06-179 12 BE
3120-00-316-8121 2020-06-181 12 SA
3120-00-316-8121 2018-10-304 18 United States
3120-00-316-8121 2018-07-192 26 MANUAL
4M286-81 2018-07-192 26 United States
3120-00-316-8121 2018-07-183 26 United States
3120-00-316-8121 2013-11-308 1 DIBBS-RFPs
3120-00-316-8121 2008-03-64 141 DIBBS
3120-00-316-8121 2007-10-290 161 DIBBS
3120-00-316-8121 2007-06-179 77 DIBBS
3120-00-316-8121 2006-03-67 14 US
HSP81TL102 2006-01-11 85 US

Cross Reference | NSN 3120-00-316-8121

Part Number Cage Code Manufacturer
03-823-81E-003 09455 RBC TRANSPORT DYNAMICS CORP. DIV RBC TRANSPORT DYNAMICS
4M286-81 02758 U S BEARINGS
4M286-81 09455 RBC TRANSPORT DYNAMICS CORP. DIV RBC TRANSPORT DYNAMICS
4M286-81 76301 BOEING COMPANY, THE DBA BOEING
4M286-81 97613 DOVER ENGINEERED SYSTEMS, INC. DBA KAHR BEARING
HSP81TL102 02758 U S BEARINGS
KMDB81-1 97613 DOVER ENGINEERED SYSTEMS, INC. DBA KAHR BEARING
LDS81E-111 16746 SPECLINE INC.

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Technical Data | NSN 3120-00-316-8121

Characteristic Specifications
MATERIAL STEEL COMP 440C INNER MEMBER STEEL COMP 630 OUTER RACE MEMBER PLASTIC POLYTETRAFLUOROETHYLENE RACE LINER
HARDNESS RATING 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM INNER MEMBER 26.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER
STYLE DESIGNATOR 11A WITH INSERT AND/OR LINER
BORE DIAMETER 5.0600 INCHES MINIMUM AND 5.0605 INCHES MAXIMUM
OUTER MEMBER OUTSIDE DIAMETER 5.9195 INCHES MINIMUM AND 5.9200 INCHES MAXIMUM
OUTER MEMBER WIDTH 1.1650 INCHES MINIMUM AND 1.1700 INCHES MAXIMUM
INNER MEMBER WIDTH 1.3700 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM
STATIC RADIAL LOAD RATING 185000 POUNDS
TEST DATA DOCUMENT 81349-MIL-I=6866 SPECIFICATION
MANUFACTURERS CODE 76301
MFR SOURCE CONTROLLING REFERENCE 4M286-81

Restrictions/Controls & Freight Information | NSN 3120-00-316-8121

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:QStrategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.”
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 114850 BEARING/BUSHING O/T BALL/ROLLER I/S
Less than car load rating
Less than truck load rating Q 70.0
Water commodity Code 742 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 3120-00-316-8121

Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Price ValidationV The current standard price has been validated.
  • The item has been analyzed in conjunction with the Zero Overpricing Program and is in the accepted price range.
  • The item was procured under open competition and under the competitive arena the price is considered fair and reasonable.
  • ZOP or Standard price challenges are permissible but must be supported by adequate justification.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
Acquisition Advice CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each
Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each