PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

IR-1216-LRing,bearing,inner

Timken Aerospace, Inc Dba Torrington Product · NSN 3110-00-143-2991 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-143-2991 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-143-2991. Primary manufacturer part number: IR-1216-L.
Features
  • Ring,bearing,inner — FSC 3110
  • Bore Shape: STRAIGHT
  • Overall Outside Diameter: 0.99950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
  • Bore Diameter: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
  • Style Designator: SOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
  • Material: STEEL OVERALL
  • Surface Finish: GROUND
  • 9 verified cross-references
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Ring,bearing,inner, cataloged under National Stock Number 3110-00-143-2991, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Timken Aerospace, Inc Dba Torrington Product. Government technical data includes 6 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: Active.

Technical Specifications
ParameterValue
NSN3110-00-143-2991
Primary Part NumberIR-1216-L
Item NameRing,bearing,inner
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTimken Aerospace, Inc Dba Torrington Product
StatusACTIVE
Bore ShapeSTRAIGHT
Overall Outside Diameter0.99950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
Bore Diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
Style DesignatorSOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
MaterialSTEEL OVERALL
Surface FinishGROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
7240-00-404-979532001 INTERCHANGEABLE
Funnel
Wirthco Engineering Inc
5950-00-647-35829072485 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Aviation and Missile Command
5970-00-728-5020 INTERCHANGEABLE
Insulation Rod,electrical
5970-00-728-5021 INTERCHANGEABLE
Insulation Rod,electrical
5970-00-728-5040 INTERCHANGEABLE
Insulation Rod,electrical
5950-00-764-109236669 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
5950-00-845-3194 INTERCHANGEABLE
Transformer,current
7490-00-955-517432001 INTERCHANGEABLE
Spring,trip Lever
Pitney Bowes Inc.
6145-01-074-654532001 INTERCHANGEABLE
Cable,radio Frequency
Huber+suhner Astrolab, Inc. Dba Huber & Suhner Astrolab Inc
5985-01-229-05373200-1E INTERCHANGEABLE
Attenuator,variable
Spectrum Control Inc Div Weinschel
Cross-Reference Index
Part NumberManufacturer
JHD241T Cmh Hele-Shaw Inc Sub of Cunningham Marine Hydraulics Co Inc (USA)
0058321 New Holland Construction (USA)
32001 General Motors Corp Delco Moraine Ndh Div (USA)
32001 General Motors Corp (USA)
B3298 Cooper Machinery Services Llc (USA)
0058321-1 New Holland Construction (USA)
IR-1216-L PRIMARY Timken Aerospace, Inc Dba Torrington Product (USA)
058321 New Holland Construction (USA)
32001 General Motors Llc Dba General Motors Llc (USA)
Related Parts
7240-00-404-9795INTERCHANGEABLE
FUNNEL
32001
5950-00-647-3582INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
9072485
5970-00-728-5020INTERCHANGEABLE
INSULATION ROD,ELECTRICAL
5970-00-728-5021INTERCHANGEABLE
INSULATION ROD,ELECTRICAL
5970-00-728-5040INTERCHANGEABLE
INSULATION ROD,ELECTRICAL
5950-00-764-1092INTERCHANGEABLE
TRANSFORMER,POWER
36669
5950-00-845-3194INTERCHANGEABLE
TRANSFORMER,CURRENT
7490-00-955-5174INTERCHANGEABLE
SPRING,TRIP LEVER
32001
6145-01-074-6545INTERCHANGEABLE
CABLE,RADIO FREQUENCY
32001
5985-01-229-0537INTERCHANGEABLE
ATTENUATOR,VARIABLE
3200-1E
5998-01-357-0581INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
32001
4235-01-379-8384INTERCHANGEABLE
PILLOW,ABSORBENT,HAZARDOUS MATER

Frequently Asked Questions

What is NSN 3110-00-143-2991?

NSN 3110-00-143-2991 is a Ring,bearing,inner, manufactured by Timken Aerospace, Inc Dba Torrington Product, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-143-2991?

NSN 3110-00-143-2991 has 9 cross-referenced part numbers: JHD241T (Cmh Hele-Shaw Inc Sub of Cunningham Marine Hydraulics Co Inc), 0058321 (New Holland Construction), 32001 (General Motors Corp Delco Moraine Ndh Div), 32001 (General Motors Corp), B3298 (Cooper Machinery Services Llc) and 4 more.

What NSN replaces 3110-00-143-2991?

There are 12 known substitutes for 3110-00-143-2991: 7240-00-404-9795, 5950-00-647-3582, 5970-00-728-5020 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of IR-1216-L?

Key specifications for IR-1216-L: Bore Shape: STRAIGHT; Overall Outside Diameter: 0.99950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN; Bore Diameter: 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN; Overall Width: 1.0050 INCHES MINIMUM AND 1.0150 INCHES MAXIMUM IN. 7 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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