NSN 3110-00-970-3909 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-970-3909. Manufacturer of record part number: 15931.
Overall Outside Diameter: 0.5000 INCHES NOMINAL IN
Identification
NSN: 3110-00-970-3909
NIIN: 009703909
FSC: 3110 — Bearings, Antifriction, Unmounted
FSG: 31 — Bearings
Primary part number: 15931
Manufacturer: Grimes Aerospace Company
General Description
The Bearing,ball,annular, cataloged under National Stock Number 3110-00-970-3909, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3110-00-970-3909
Primary Part Number
15931
Item Name
Bearing,ball,annular
FSC / FSG
3110 / 31 — Bearings, Antifriction, Unmounted
Manufacturer
Grimes Aerospace Company
Status
ACTIVE
Retainer Fabrication Method
PRESSED
Lubrication Material
GREASE
Internal Clearance
0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
Surface Finish
GROUND
Shield Quantity
2
Style Designator
NON-LOADING GROOVE, NON-SEPARABLE
Overall Outside Diameter
0.5000 INCHES NOMINAL IN
Bore Shape
STRAIGHT
Load Direction
RADIAL
Standard Tolerance Designation
ABEC NO.1
Bore Diameter
0.1875 INCHES NOMINAL IN
Material
STEEL CORROSION RESISTING OVERALL
Lubrication Material Document and Classification
ASUM 100,AMERICAN OIL CO MFR REF SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-00-995-1968NM137AS1024S6CPOSSIBLE MATCH
SCREW,CAP,SOCKET HEAD
Possible match (shared part number)Nylok Llc
5950-01-032-191115931POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
5940-01-148-445315931POSSIBLE MATCH
TERMINAL,STUD
Possible match (shared part number)Useco an Affil of United Service Equipment Co
5935-01-243-4421POSSIBLE MATCH
CONNECTOR,RECEPTACLE,ELECTRICAL
Possible match (shared part number)
5940-01-279-38111593-1POSSIBLE MATCH
TERMINAL,STUD
Possible match (shared part number)Keystone Electronics Corp
NSN 3110-00-970-3909 is a Bearing,ball,annular, manufactured by Grimes Aerospace Company, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
What part numbers are listed for NSN 3110-00-970-3909?
NSN 3110-00-970-3909 has 1 manufacturer part number on file: 15931 (Grimes Aerospace Company).
What NSN replaces 3110-00-970-3909?
7 possible matches (shared part number, not a government interchangeability claim): 5305-00-995-1968, 5950-01-032-1911, 5940-01-148-4453. Verify interchangeability with system specifications before substitution.
What are the specifications of 15931?
Key specifications for 15931: Retainer Fabrication Method: PRESSED; Lubrication Material: GREASE; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 13 specifications are documented in the U.S. Government catalog.
Is NSN 3110-00-970-3909 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.