PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-630Bearing,ball,annular

Hamilton Sundstrand Corporation · NSN 3110-00-045-3171 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-045-3171 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-045-3171. Primary manufacturer part number: 21-630.
Features
  • Bearing,ball,annular — FSC 3110
  • Surface Finish: GROUND
  • Load Direction: RADIAL
  • Bore Shape: STRAIGHT
  • Internal Fit-Up Designation: STANDARD
  • Material: STEEL BALL
  • Material: STEEL RETAINER
  • Material: STEEL INNER RING
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Ball construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-045-3171, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Hamilton Sundstrand Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 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
NSN3110-00-045-3171
Primary Part Number21-630
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusCANCELLED
Surface FinishGROUND
Load DirectionRADIAL
Bore ShapeSTRAIGHT
Internal Fit-Up DesignationSTANDARD
MaterialSTEEL BALL
MaterialSTEEL RETAINER
MaterialSTEEL INNER RING
MaterialRUBBER SYNTHETIC SEAL
MaterialSTEEL OUTER RING
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE CARTRIDGE TYPE
Seal Quantity2
Lubrication MaterialGREASE
Lubrication Material Document and ClassificationMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
Standard Tolerance DesignationABEC NO.1
Overall Outside Diameter40.00 MILLIMETERS NOMINAL MM
Bearing Seal TypeLABYRINTH
Bore Diameter17.00 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-156-5441 INTERCHANGEABLE
Bearing,ball,annular
3110-00-158-8257 INTERCHANGEABLE
Bearing,ball,annular
3110-00-198-2623 INTERCHANGEABLE
Bearing,ball,annular
3110-00-227-3880 INTERCHANGEABLE
Bearing,ball,annular
4330-00-276-0048216-30 INTERCHANGEABLE
Bowl,sediment
Norgren C a Co
3110-00-293-8048 INTERCHANGEABLE
Bearing,ball,annular
3110-00-293-9288204SFFCQXAP7XMILG3278 INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
3110-00-516-5182 INTERCHANGEABLE
Bearing,ball,annular
3110-00-554-3601 INTERCHANGEABLE
Bearing,ball,annular
3110-00-715-0117 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
21-630 Hamilton Sundstrand Corporation (USA)
FF-B-171/09J03B2A Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-59595 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-59595-803JBBB Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
203SRRC Skf Usa Inc. (USA)
FF-B-171/9 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
S3503 Fag Bearings Corporation (USA)
3110PL0965788 Jednolity Indeks Materialowy - Uniform Material Index (POL)
21-630 Rtx Corporation Div Pratt & Whitney (USA)
Related Parts
3110-00-156-5441INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-158-8257INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-198-2623INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-227-3880INTERCHANGEABLE
BEARING,BALL,ANNULAR
4330-00-276-0048INTERCHANGEABLE
BOWL,SEDIMENT
216-30
3110-00-293-8048INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-293-9288INTERCHANGEABLE
BEARING,BALL,ANNULAR
204SFFCQXAP7XMILG3278
3110-00-516-5182INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-554-3601INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-715-0117INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-967-2995INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-054-7285INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-045-3171?

NSN 3110-00-045-3171 is a Bearing,ball,annular, manufactured by Hamilton Sundstrand Corporation, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-045-3171?

NSN 3110-00-045-3171 has 9 cross-referenced part numbers: 21-630 (Hamilton Sundstrand Corporation), FF-B-171/09J03B2A (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-59595 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-59595-803JBBB (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 203SRRC (Skf Usa Inc.) and 4 more.

What NSN replaces 3110-00-045-3171?

There are 12 known substitutes for 3110-00-045-3171: 3110-00-156-5441, 3110-00-158-8257, 3110-00-198-2623 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-630?

Key specifications for 21-630: Overall Width: 0.6875 INCHES NOMINAL IN; Surface Finish: GROUND; Load Direction: RADIAL; Bore Shape: STRAIGHT. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-045-3171 still in active supply?

NSN 3110-00-045-3171 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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