PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5521Cup,tapered Roller Bearing

Kenworth Truck Co a Div of Paccar Inc · NSN 3110-00-100-0496 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-100-0496 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-100-0496. Primary manufacturer part number: 5521.
Features
  • Cup,tapered Roller Bearing — FSC 3110
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Backface Corner Radius: 0.1250 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Style Designator: NORMAL ANGLE
  • Outside Diameter: 5.1181 INCHES NOMINAL IN
  • 22 verified cross-references
  • Primary manufacturer: Kenworth Truck Co a Div of Paccar Inc
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-00-100-0496, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Kenworth Truck Co a Div of Paccar Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 22 commercial cross-references from 20 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-100-0496
Primary Part Number5521
Item NameCup,tapered Roller Bearing
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerKenworth Truck Co a Div of Paccar Inc
StatusACTIVE
Standard Tolerance DesignationAFBMA CLASS 2
Backface Corner Radius0.1250 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorNORMAL ANGLE
Outside Diameter5.1181 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5975-00-100-8716 INTERCHANGEABLE
Box Connector,electrical
5975-00-100-8759 INTERCHANGEABLE
Box Connector,electrical
5330-00-171-90104006145-3 INTERCHANGEABLE
Gasket
Agco Corp Parts Opn
6105-00-213-7427 INTERCHANGEABLE
Motor,alternating Current
4510-00-215-8019 INTERCHANGEABLE
Handle,faucet
5330-00-290-1168335216 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5975-00-317-311696T075 INTERCHANGEABLE
Box Connector,electrical
Egs Electrical Group Appleton Div
5950-00-433-719210182075 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5962-00-469-47615521 INTERCHANGEABLE
Microcircuit,linear
Satcon Electronics Custom Hybrid Products Div
5935-00-502-6234552-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
Cross-Reference Index
Part NumberManufacturer
5521 PRIMARY Kenworth Truck Co a Div of Paccar Inc (USA)
166D2 Diamond Reo Truck Co (USA)
BT5521 PRIMARY Federal-Mogul Corp Government Sales Dept (USA)
5521 Tyson Bearing Co Div Skf Industries Inc (USA)
140645 General Motors Corp (USA)
5521 Long-Airdox Co (USA)
5221 Amarillo Gear Co Div Amarillo Gear Service (USA)
K5521 Skf France (FRA)
5521 Corbitt Co Inc (USA)
50-11B26 PRIMARY Trailmobile Inc Sub of the Pullman Co (USA)
534757 Fruehauf Corp (USA)
2X627B PRIMARY Napco International Llc Dba Napco International Inc (USA)
2B5060 White Motor Corp (USA)
FF-B-187 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5521 Meritor Heavy Vehicle Systems, Llc (USA)
5521 The Timken Company (FRA)
5521 PRIMARY Federal-Mogul Corp Government Sales Dept (USA)
5521 PRIMARY The Timken Corporation (USA)
706784 Army Weapons Command Attn Amswe-Ree-S (USA)
SSL-600 ITEM 601 Amarillo Gear Co Div Amarillo Gear Service (USA)
Related Parts
5975-00-100-8716INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-100-8759INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5330-00-171-9010INTERCHANGEABLE
GASKET
4006145-3
6105-00-213-7427INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
4510-00-215-8019INTERCHANGEABLE
HANDLE,FAUCET
5330-00-290-1168INTERCHANGEABLE
SEAL,PLAIN ENCASED
335216
5975-00-317-3116INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
96T075
5950-00-433-7192INTERCHANGEABLE
TRANSFORMER,POWER
10182075
5962-00-469-4761INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5521
5935-00-502-6234INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
552-1
5910-00-528-9190INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
914004-1B
4820-00-585-8566INTERCHANGEABLE
VALVE,SAFETY RELIEF

Frequently Asked Questions

What is NSN 3110-00-100-0496?

NSN 3110-00-100-0496 is a Cup,tapered Roller Bearing, manufactured by Kenworth Truck Co a Div of Paccar Inc, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-100-0496?

NSN 3110-00-100-0496 has 22 cross-referenced part numbers: 5521 (Kenworth Truck Co a Div of Paccar Inc), 166D2 (Diamond Reo Truck Co), BT5521 (Federal-Mogul Corp Government Sales Dept), 5521 (Tyson Bearing Co Div Skf Industries Inc), 140645 (General Motors Corp) and 17 more.

What NSN replaces 3110-00-100-0496?

There are 12 known substitutes for 3110-00-100-0496: 5975-00-100-8716, 5975-00-100-8759, 5330-00-171-9010 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5521?

Key specifications for 5521: Standard Tolerance Designation: AFBMA CLASS 2; Backface Corner Radius: 0.1250 INCHES NOMINAL IN; Overall Width: 1.4375 INCHES NOMINAL IN; Material: STEEL OVERALL. 6 total characteristics are documented in the Federal Logistics Information System.

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