PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18850Bearing,washer,thrust

Altra Industrial Motion Corp. · NSN 3120-01-160-2223 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-160-2223 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-160-2223. Primary manufacturer part number: 18850.
Features
  • Bearing,washer,thrust — FSC 3120
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 32.0 MICROINCHES LEFT SIDE
  • Corner Shape: SQUARE ALL CORNERS
  • Style Designator: ROUND
  • Overall Thickness: 0.1850 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
  • Outside Diameter: 1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN
  • Material: STEEL COMP 1020 OVERALL
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 3120-01-160-2223, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-01-160-2223
Primary Part Number18850
Item NameBearing,washer,thrust
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAltra Industrial Motion Corp.
StatusCANCELLED
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface Finish32.0 MICROINCHES LEFT SIDE
Corner ShapeSQUARE ALL CORNERS
Style DesignatorROUND
Overall Thickness0.1850 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
Outside Diameter1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN
MaterialSTEEL COMP 1020 OVERALL
Surface Finish125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
Surface Finish125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Diameter0.6270 INCHES MINIMUM AND 0.6320 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Surface Finish32.0 MICROINCHES RIGHT SIDE
Hardness Rating58.0 ROCKWELL C MINIMUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-036-110111680ML INTERCHANGEABLE
Seat,valve
Schneider Electric Systems Usa Inc
3120-00-100-6354 INTERCHANGEABLE
Bearing,washer,thrust
3120-00-102-7612 INTERCHANGEABLE
Bearing,washer,thrust
3120-00-111-0711 INTERCHANGEABLE
Bearing,washer,thrust
3120-00-165-5959 INTERCHANGEABLE
Bearing,washer,thrust
4720-00-278-1111 INTERCHANGEABLE
Hose,nonmetallic
4820-00-308-127018850 INTERCHANGEABLE
Valve,regulating,temperature
Honeywell International Inc. Div Aerospace - Torrance
6515-00-333-970066-1940 INTERCHANGEABLE
Forceps,fixation
Sklar Corporation Dba Sklar Instruments
3120-00-487-4726 INTERCHANGEABLE
Bearing,washer,thrust
3120-00-828-4550 INTERCHANGEABLE
Bearing,washer,thrust
Cross-Reference Index
Part NumberManufacturer
18850 Altra Industrial Motion Corp. (USA)
MS17811-13 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS17811 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
425 Transact Intl Inc (USA)
Related Parts
4820-00-036-1101INTERCHANGEABLE
SEAT,VALVE
11680ML
3120-00-100-6354INTERCHANGEABLE
BEARING,WASHER,THRUST
3120-00-102-7612INTERCHANGEABLE
BEARING,WASHER,THRUST
3120-00-111-0711INTERCHANGEABLE
BEARING,WASHER,THRUST
3120-00-165-5959INTERCHANGEABLE
BEARING,WASHER,THRUST
4720-00-278-1111INTERCHANGEABLE
HOSE,NONMETALLIC
4820-00-308-1270INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
18850
6515-00-333-9700INTERCHANGEABLE
FORCEPS,FIXATION
66-1940
3120-00-487-4726INTERCHANGEABLE
BEARING,WASHER,THRUST
3120-00-828-4550INTERCHANGEABLE
BEARING,WASHER,THRUST
3120-00-855-1100INTERCHANGEABLE
BEARING,WASHER,THRUST
1680-00-874-8744INTERCHANGEABLE
VALVE,REGULATING
18850

Frequently Asked Questions

What is NSN 3120-01-160-2223?

NSN 3120-01-160-2223 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 3120-01-160-2223?

NSN 3120-01-160-2223 has 4 cross-referenced part numbers: 18850 (Altra Industrial Motion Corp.), MS17811-13 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS17811 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 425 (Transact Intl Inc).

What NSN replaces 3120-01-160-2223?

There are 12 known substitutes for 3120-01-160-2223: 4820-00-036-1101, 3120-00-100-6354, 3120-00-102-7612 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18850?

Key specifications for 18850: Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Surface Finish: 32.0 MICROINCHES LEFT SIDE; Corner Shape: SQUARE ALL CORNERS; Style Designator: ROUND. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-01-160-2223 still in active supply?

NSN 3120-01-160-2223 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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