PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25993Coupling,shaft,flexible

Rexnord Industries, Llc Div Couplings Division · NSN 3010-00-559-3638 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-00-559-3638 — this item is cataloged by the U.S. Government under National Stock Number 3010-00-559-3638. Primary manufacturer part number: 25993.
Features
  • Coupling,shaft,flexible — FSC 3010
  • Design Type: DOUBLE DISK
  • Outside Diameter: 2.250 INCHES NOMINAL IN
  • Thread Size Designator: 10-32 BOTH ENDS
  • Securing Method: THREADED HOLE(S) BOTH ENDS
  • Spline Quantity: 24 BOTH ENDS
  • Spline Minor Diameter: 0.5850 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM BOTH ENDS IN
  • Features Provided: EXPOSED COUPLING BOLT TYPE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-559-3638, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Rexnord Industries, Llc Div Couplings Division. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-00-559-3638
Primary Part Number25993
Item NameCoupling,shaft,flexible
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerRexnord Industries, Llc Div Couplings Division
StatusACTIVE
Design TypeDOUBLE DISK
Outside Diameter2.250 INCHES NOMINAL IN
Thread Size Designator10-32 BOTH ENDS
Securing MethodTHREADED HOLE(S) BOTH ENDS
Spline Quantity24 BOTH ENDS
Spline Minor Diameter0.5850 INCHES MINIMUM AND 0.5880 INCHES MAXIMUM BOTH ENDS IN
Features ProvidedEXPOSED COUPLING BOLT TYPE
Bore ShapeSPLINED BOTH ENDS
Spline Major Diameter0.6350 INCHES MINIMUM AND 0.6430 INCHES MAXIMUM BOTH ENDS IN
Threaded Hole Quantity2 BOTH ENDS
Threaded Hole LocationBOTH ENDS: END OF HUB, 90 DEG APART
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-928-5647391-3809 INTERCHANGEABLE
Transformer,radio Frequency
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
5342-01-197-123225993 INTERCHANGEABLE
Mount,resilient,weapon System
Jetstream of Houston, Llp Dba Jetstream of Houston Llp
5355-01-277-916125993 INTERCHANGEABLE
Knob
Elbitamerica, Inc.
Cross-Reference Index
Part NumberManufacturer
2836289 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
25993 PRIMARY Rexnord Industries, Llc Div Couplings Division (USA)
Related Parts
5950-00-928-5647INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
391-3809
5342-01-197-1232INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
25993
5355-01-277-9161INTERCHANGEABLE
KNOB
25993

Frequently Asked Questions

What is NSN 3010-00-559-3638?

NSN 3010-00-559-3638 is a Coupling,shaft,flexible, manufactured by Rexnord Industries, Llc Div Couplings Division, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-00-559-3638?

NSN 3010-00-559-3638 has 2 cross-referenced part numbers: 2836289 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 25993 (Rexnord Industries, Llc Div Couplings Division).

What NSN replaces 3010-00-559-3638?

There are 3 known substitutes for 3010-00-559-3638: 5950-00-928-5647, 5342-01-197-1232, 5355-01-277-9161. Verify interchangeability with system specifications before substitution.

What are the specifications of 25993?

Key specifications for 25993: Design Type: DOUBLE DISK; Outside Diameter: 2.250 INCHES NOMINAL IN; Thread Size Designator: 10-32 BOTH ENDS; Securing Method: THREADED HOLE(S) BOTH ENDS. 12 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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