PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TB-612Bearing,washer,thrust

Altra Industrial Motion Corp. · NSN 3120-00-525-8673 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-525-8673 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-525-8673. Primary manufacturer part number: TB-612.
Features
  • Bearing,washer,thrust — FSC 3120
  • Outside Diameter: 0.7500 INCHES NOMINAL IN
  • Overall Thickness: 0.0312 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Corner Shape: SQUARE ALL CORNERS
  • Nondefinitive Spec/std Data: 1 TYPE AND A COMPOSITION
  • Material Document and Classification: MIL-L-15016 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
  • Material: OIL LUBRICATING LUBRICATION
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Structural fastening and assembly
  • Equipment mounting
General Description

The Bearing,washer,thrust, cataloged under National Stock Number 3120-00-525-8673, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Altra Industrial Motion Corp.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-525-8673
Primary Part NumberTB-612
Item NameBearing,washer,thrust
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAltra Industrial Motion Corp.
StatusCANCELLED
Outside Diameter0.7500 INCHES NOMINAL IN
Overall Thickness0.0312 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Corner ShapeSQUARE ALL CORNERS
Nondefinitive Spec/std Data1 TYPE AND A COMPOSITION
Material Document and ClassificationMIL-L-15016 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
MaterialOIL LUBRICATING LUBRICATION
Style DesignatorROUND
MaterialCOPPER ALLOY OVERALL
Center Hole Shape StyleROUND
Diameter0.3750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5120-00-223-896535770 INTERCHANGEABLE
Guide,drill
Ridge Tool Company
5305-00-263-7310T703 INTERCHANGEABLE
Screw,cap,hexagon Head
Caterpillar Inc Div Caterpillar Defense
5305-00-269-3235AES01F375875AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
3120-00-421-4781 INTERCHANGEABLE
Bearing,washer,thrust
4820-00-541-3561T703 INTERCHANGEABLE
Valve,plug
Derbyshire Machine & Tool Co
4320-01-121-0513 INTERCHANGEABLE
Governor,pump,pressure Regulatin
3120-01-388-5374 INTERCHANGEABLE
Bearing,washer,thrust
4510-01-709-015835770 INTERCHANGEABLE
Parts Kit,water Closet
Thetford Corp
Cross-Reference Index
Part NumberManufacturer
TT703 Chrysler Corp Amplex Div (USA)
65C35442-9 San Antonio Air Logistics Center (USA)
00004-ST111 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
TT703 Eagle-Picher Industries Inc Kingwell Div (USA)
SLT389-1 Masten Bunting Eagle-Picher Bearings Div Eagle-Picher Industries Inc (USA)
T703 Chrysler Corp Amplex Div (USA)
00003-ST111 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
35770 Altra Industrial Motion Corp. (USA)
T703 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
31205258673 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
714005-106 Capstan Ag Systems, Inc Dba Remex (USA)
35770 TB-612 Altra Industrial Motion Corp. (USA)
8436863-3 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
TB-612 PRIMARY Altra Industrial Motion Corp. (USA)
TT703 Beemer Precision Inc (USA)
Related Parts
5120-00-223-8965INTERCHANGEABLE
GUIDE,DRILL
35770
5305-00-263-7310INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
T703
5305-00-269-3235INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01F375875AW9A91
3120-00-421-4781INTERCHANGEABLE
BEARING,WASHER,THRUST
4820-00-541-3561INTERCHANGEABLE
VALVE,PLUG
T703
4320-01-121-0513INTERCHANGEABLE
GOVERNOR,PUMP,PRESSURE REGULATIN
3120-01-388-5374INTERCHANGEABLE
BEARING,WASHER,THRUST
4510-01-709-0158INTERCHANGEABLE
PARTS KIT,WATER CLOSET
35770

Frequently Asked Questions

What is NSN 3120-00-525-8673?

NSN 3120-00-525-8673 is a Bearing,washer,thrust, manufactured by Altra Industrial Motion Corp., classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-525-8673?

NSN 3120-00-525-8673 has 15 cross-referenced part numbers: TT703 (Chrysler Corp Amplex Div), 65C35442-9 (San Antonio Air Logistics Center), 00004-ST111 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), TT703 (Eagle-Picher Industries Inc Kingwell Div), SLT389-1 (Masten Bunting Eagle-Picher Bearings Div Eagle-Picher Industries Inc) and 10 more.

What NSN replaces 3120-00-525-8673?

There are 8 known substitutes for 3120-00-525-8673: 5120-00-223-8965, 5305-00-263-7310, 5305-00-269-3235 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TB-612?

Key specifications for TB-612: Outside Diameter: 0.7500 INCHES NOMINAL IN; Overall Thickness: 0.0312 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Corner Shape: SQUARE ALL CORNERS. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-525-8673 still in active supply?

NSN 3120-00-525-8673 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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