Features Provided: STANDARD GRID SPRING AND SHROUDED COUPLING BOLT TYPE
Bore Shape: ROUGH STOCK BOTH ENDS
Bore Diameter: 2.1250 INCHES NOMINAL BOTH ENDS IN
Identification
NSN: 3010-00-253-9801
NIIN: 002539801
FSC: 3010 — Torque Converters and Speed Changers
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-253-9801, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3010-00-253-9801
Item Name
Coupling,shaft,flexible
FSC / FSG
3010 / 30 — Torque Converters and Speed Changers
Status
ACTIVE
Bore Length
2.4380 INCHES NOMINAL BOTH ENDS IN
Design Type
INTERNAL GEAR
Outside Diameter
7.000 INCHES NOMINAL IN
Features Provided
STANDARD GRID SPRING AND SHROUDED COUPLING BOLT TYPE
Bore Shape
ROUGH STOCK BOTH ENDS
Bore Diameter
2.1250 INCHES NOMINAL BOTH ENDS IN
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
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
CS1861
3/9Design control — primary reference
Poole Co
No interchangeability data on file.
Other items in FSC 3010 — Torque Converters and Speed Changers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3010-00-001-0013
3010-00-001-0013 · Item name not on file
3010-00-001-0067
3010-00-001-0067 · Item name not on file
3010-00-001-0069
3010-00-001-0069 · Item name not on file
3010-00-001-0095
3010-00-001-0095 · Item name not on file
3010-00-001-1239
3010-00-001-1239 · Item name not on file
3010-00-001-1689
3010-00-001-1689 · Item name not on file
3010-00-001-2168
3010-00-001-2168 · Item name not on file
3010-00-001-2173
3010-00-001-2173 · Item name not on file
Frequently Asked Questions
What is NSN 3010-00-253-9801?
NSN 3010-00-253-9801 is a Coupling,shaft,flexible, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
What are the specifications of 3010-00-253-9801?
Key specifications for 3010-00-253-9801: Bore Length: 2.4380 INCHES NOMINAL BOTH ENDS IN; Design Type: INTERNAL GEAR; Overall Length: 5.000 INCHES NOMINAL IN; Outside Diameter: 7.000 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 3010-00-253-9801 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.