PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R38B31K25Bearing,ball,annular

New Hampshire Ball Bearings Inc Div Hitech Division · NSN 3110-00-109-1856 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-109-1856 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-109-1856. Primary manufacturer part number: R38B31K25.
Features
  • Bearing,ball,annular — FSC 3110
  • Overall Outside Diameter: 22.00 MILLIMETERS NOMINAL MM
  • Bore Diameter: 8.00 MILLIMETERS NOMINAL MM
  • Material: STEEL COMP E52100 OUTER RING
  • Internal Fit-Up Designation: STANDARD
  • Material: STEEL RETAINER
  • Material: STEEL COMP E52100 INNER RING
  • Material: STEEL COMP E52100 BALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E52100 Outer Ring construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-109-1856, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is New Hampshire Ball Bearings Inc Div Hitech Division. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-109-1856
Primary Part NumberR38B31K25
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerNew Hampshire Ball Bearings Inc Div Hitech Division
StatusACTIVE
Overall Outside Diameter22.00 MILLIMETERS NOMINAL MM
Bore Diameter8.00 MILLIMETERS NOMINAL MM
MaterialSTEEL COMP E52100 OUTER RING
Internal Fit-Up DesignationSTANDARD
MaterialSTEEL RETAINER
MaterialSTEEL COMP E52100 INNER RING
MaterialSTEEL COMP E52100 BALL
MaterialSTEEL SHIELD
Style DesignatorCOUNTERBORED OUTER RING, NON-SEPARABLE
Surface FinishGROUND
Bore ShapeSTRAIGHT
Load DirectionRADIAL
Standard Tolerance DesignationABEC NO.5
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-052-9798 INTERCHANGEABLE
Bearing,ball,annular
3110-00-109-1873 INTERCHANGEABLE
Bearing,ball,annular
2910-00-358-52287367585 INTERCHANGEABLE
Retainer
U S Army Tank Automotive Command Amsta-Im-Mm
3110-00-554-3168 INTERCHANGEABLE
Bearing,ball,annular
3110-00-980-5793 INTERCHANGEABLE
Bearing,ball,annular
3110-01-053-2937 INTERCHANGEABLE
Bearing,ball,annular
5340-01-589-622238R INTERCHANGEABLE
Bumper
Allegis Corporation
Cross-Reference Index
Part NumberManufacturer
R38B31K25 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
4132238-1A5A Whippany Actuation Systems, Llc (USA)
4132238-2A5A Whippany Actuation Systems, Llc (USA)
38R Skf Usa Inc. (USA)
M913/09JB714NPP Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M913/09JB71XNPP Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M81793-GILLBN04AC51AA0 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
297837-1 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MIL-B-913 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M913/09JBJXNPP Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-00-052-9798INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-109-1873INTERCHANGEABLE
BEARING,BALL,ANNULAR
2910-00-358-5228INTERCHANGEABLE
RETAINER
7367585
3110-00-554-3168INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-980-5793INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-053-2937INTERCHANGEABLE
BEARING,BALL,ANNULAR
5340-01-589-6222INTERCHANGEABLE
BUMPER
38R

Frequently Asked Questions

What is NSN 3110-00-109-1856?

NSN 3110-00-109-1856 is a Bearing,ball,annular, manufactured by New Hampshire Ball Bearings Inc Div Hitech Division, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-109-1856?

NSN 3110-00-109-1856 has 10 cross-referenced part numbers: R38B31K25 (New Hampshire Ball Bearings Inc Div Hitech Division), 4132238-1A5A (Whippany Actuation Systems, Llc), 4132238-2A5A (Whippany Actuation Systems, Llc), 38R (Skf Usa Inc.), M913/09JB714NPP (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 3110-00-109-1856?

There are 7 known substitutes for 3110-00-109-1856: 3110-00-052-9798, 3110-00-109-1873, 2910-00-358-5228 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R38B31K25?

Key specifications for R38B31K25: Overall Outside Diameter: 22.00 MILLIMETERS NOMINAL MM; Bore Diameter: 8.00 MILLIMETERS NOMINAL MM; Material: STEEL COMP E52100 OUTER RING; Internal Fit-Up Designation: STANDARD. 14 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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