PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F440-30639 TYPE 12SCoupling,shaft,flexible

TB Woods's Corporation · NSN 3010-01-354-5546 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-01-354-5546 — this item is cataloged by the U.S. Government under National Stock Number 3010-01-354-5546. Primary manufacturer part number: F440-30639 TYPE 12S.
Features
  • Coupling,shaft,flexible — FSC 3010
  • Outside Diameter: 10.000 INCHES NOMINAL IN
  • Keyway Depth: 0.3750 INCHES NOMINAL FIRST END IN
  • Thread Size Designator: 5/8-11 FIRST END
  • Bore Diameter: 2.8775 INCHES NOMINAL SECOND END IN
  • Bore Diameter: 2.3770 INCHES NOMINAL FIRST END IN
  • Keyway Width: 0.750 INCHES NOMINAL FIRST END IN
  • Keyway Width: 0.625 INCHES NOMINAL SECOND END 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 3010-01-354-5546, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is TB Woods's Corporation. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-01-354-5546
Primary Part NumberF440-30639 TYPE 12S
Item NameCoupling,shaft,flexible
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerTB Woods's Corporation
StatusACTIVE
Outside Diameter10.000 INCHES NOMINAL IN
Keyway Depth0.3750 INCHES NOMINAL FIRST END IN
Thread Size Designator5/8-11 FIRST END
Bore Diameter2.8775 INCHES NOMINAL SECOND END IN
Bore Diameter2.3770 INCHES NOMINAL FIRST END IN
Keyway Width0.750 INCHES NOMINAL FIRST END IN
Keyway Width0.625 INCHES NOMINAL SECOND END IN
Securing MethodTHREADED HOLE(S) BOTH ENDS
Features ProvidedKEYWAY
Keying Facility TypeKEYWAY BOTH ENDS
Bore ShapeSTRAIGHT BOTH ENDS
Keying Facility Quantity1 BOTH ENDS
Design TypeCLAMPING HUB
Threaded Hole LocationON EACH HUB
Keyway Depth0.3120 INCHES NOMINAL SECOND END IN
Bore Length4.0000 INCHES NOMINAL BOTH ENDS IN
Thread Size Designator1/2-13 SECOND END
Threaded Hole Quantity1 BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3010-01-354-554512E INTERCHANGEABLE
Insert,flexible Coupling
TB Woods's Corporation
Cross-Reference Index
Part NumberManufacturer
F440-30639 TB Woods's Corporation (USA)
F440-30639 TYPE 12S PRIMARY TB Woods's Corporation (USA)
Related Parts
3010-01-354-5545INTERCHANGEABLE
INSERT,FLEXIBLE COUPLING
12E

Frequently Asked Questions

What is NSN 3010-01-354-5546?

NSN 3010-01-354-5546 is a Coupling,shaft,flexible, manufactured by TB Woods's Corporation, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-01-354-5546?

NSN 3010-01-354-5546 has 2 cross-referenced part numbers: F440-30639 (TB Woods's Corporation), F440-30639 TYPE 12S (TB Woods's Corporation).

What NSN replaces 3010-01-354-5546?

There is 1 known substitute for 3010-01-354-5546: 3010-01-354-5545. Verify interchangeability with system specifications before substitution.

What are the specifications of F440-30639 TYPE 12S?

Key specifications for F440-30639 TYPE 12S: Outside Diameter: 10.000 INCHES NOMINAL IN; Keyway Depth: 0.3750 INCHES NOMINAL FIRST END IN; Thread Size Designator: 5/8-11 FIRST END; Bore Diameter: 2.8775 INCHES NOMINAL SECOND END IN. 19 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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