PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

258B1027Coupling,shaft,flexible

General Dynamics Mission Systems, Inc. Dba Gdms · NSN 3010-00-203-1649 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-00-203-1649 — this item is cataloged by the U.S. Government under National Stock Number 3010-00-203-1649. Primary manufacturer part number: 258B1027.
Features
  • Coupling,shaft,flexible — FSC 3010
  • Thread Size Designator: 8-32 BOTH ENDS
  • Securing Method: THREADED HOLE(S) BOTH ENDS
  • Bore Shape: STRAIGHT BOTH ENDS
  • FSC Application Data: RADIO RECEIVER,EXCEPT NAVIGATION,EXCEPT AIRBORNE
  • Design Type: INSULATOR W/SPRING ACTION
  • Furnished Items and Quantity: 4 SETSCREWS
  • Bore Diameter: 0.2525 INCHES NOMINAL BOTH ENDS IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-203-1649, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is General Dynamics Mission Systems, Inc. Dba Gdms. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN3010-00-203-1649
Primary Part Number258B1027
Item NameCoupling,shaft,flexible
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc. Dba Gdms
StatusACTIVE
Thread Size Designator8-32 BOTH ENDS
Securing MethodTHREADED HOLE(S) BOTH ENDS
Bore ShapeSTRAIGHT BOTH ENDS
FSC Application DataRADIO RECEIVER,EXCEPT NAVIGATION,EXCEPT AIRBORNE
Design TypeINSULATOR W/SPRING ACTION
Furnished Items and Quantity4 SETSCREWS
Bore Diameter0.2525 INCHES NOMINAL BOTH ENDS IN
Threaded Hole Quantity2 BOTH ENDS
Outside Diameter1.094 INCHES NOMINAL1.094 INCHES NOMINAL IN
Threaded Hole LocationBOTH ENDS: LOCATED ON HUB
Bore Length0.3360 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-144-8507 INTERCHANGEABLE
Bearing,ball,annular
4820-00-304-41436403 INTERCHANGEABLE
Disk,valve
Eaton Corporation Div Eaton Fluid Power
5915-00-496-20402920137-3 INTERCHANGEABLE
Filter,band Pass
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6680-00-499-51815135238 INTERCHANGEABLE
Gage Rod,liquid Level
Rolls-Royce Solutions America Inc
2815-00-511-2586BM35791 INTERCHANGEABLE
Guide,valve
Cummins Inc.
5975-00-564-621532Z2B1 INTERCHANGEABLE
Cable Nipple,electrical
Bell Textron Inc
5305-00-948-4042 INTERCHANGEABLE
Screw,machine
6230-01-031-0847 INTERCHANGEABLE
Handle,extension Light
5340-01-038-05966403 INTERCHANGEABLE
Boot,dust and Moisture Seal
Auto Crane Company
4730-01-204-8795 INTERCHANGEABLE
Strainer Element,sediment
Cross-Reference Index
Part NumberManufacturer
258B1027 PRIMARY General Dynamics Mission Systems, Inc. Dba Gdms (USA)
258B1027 Motorola Inc. Dba Integrated Information Systems Group (USA)
SMB19072 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
LSN274E-43 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
SMB97523 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
6403 PRIMARY Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
Related Parts
3110-00-144-8507INTERCHANGEABLE
BEARING,BALL,ANNULAR
4820-00-304-4143INTERCHANGEABLE
DISK,VALVE
6403
5915-00-496-2040INTERCHANGEABLE
FILTER,BAND PASS
2920137-3
6680-00-499-5181INTERCHANGEABLE
GAGE ROD,LIQUID LEVEL
5135238
2815-00-511-2586INTERCHANGEABLE
GUIDE,VALVE
BM35791
5975-00-564-6215INTERCHANGEABLE
CABLE NIPPLE,ELECTRICAL
32Z2B1
5305-00-948-4042INTERCHANGEABLE
SCREW,MACHINE
6230-01-031-0847INTERCHANGEABLE
HANDLE,EXTENSION LIGHT
5340-01-038-0596INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
6403
4730-01-204-8795INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
5120-01-335-9099INTERCHANGEABLE
EXTENSION,SOCKET WRENCH
5985-01-443-7443INTERCHANGEABLE
COUPLER,ANTENNA
6403

Frequently Asked Questions

What is NSN 3010-00-203-1649?

NSN 3010-00-203-1649 is a Coupling,shaft,flexible, manufactured by General Dynamics Mission Systems, Inc. Dba Gdms, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-00-203-1649?

NSN 3010-00-203-1649 has 6 cross-referenced part numbers: 258B1027 (General Dynamics Mission Systems, Inc. Dba Gdms), 258B1027 (Motorola Inc. Dba Integrated Information Systems Group), SMB19072 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), LSN274E-43 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), SMB97523 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir) and 1 more.

What NSN replaces 3010-00-203-1649?

There are 12 known substitutes for 3010-00-203-1649: 3110-00-144-8507, 4820-00-304-4143, 5915-00-496-2040 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 258B1027?

Key specifications for 258B1027: Thread Size Designator: 8-32 BOTH ENDS; Securing Method: THREADED HOLE(S) BOTH ENDS; Bore Shape: STRAIGHT BOTH ENDS; FSC Application Data: RADIO RECEIVER,EXCEPT NAVIGATION,EXCEPT AIRBORNE. 13 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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