PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4840-SF12-3Coupling,shaft,rigid

B.w. Elliott Manufacturing Co., Llc · NSN 3010-00-388-0831 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-00-388-0831 — this item is cataloged by the U.S. Government under National Stock Number 3010-00-388-0831. Primary manufacturer part number: 4840-SF12-3.
Features
  • Coupling,shaft,rigid — FSC 3010
  • Bore Shape: STRAIGHT FIRST END
  • Body Material: COPPER ALLOY AND STEEL
  • Bore Length: 1.5000 INCHES NOMINAL FIRST END IN
  • Bore Diameter: 0.7500 INCHES NOMINAL FIRST END IN
  • 7 verified cross-references
  • Primary manufacturer: B.w. Elliott Manufacturing Co., Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,shaft,rigid, cataloged under National Stock Number 3010-00-388-0831, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is B.w. Elliott Manufacturing Co., Llc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-00-388-0831
Primary Part Number4840-SF12-3
Item NameCoupling,shaft,rigid
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerB.w. Elliott Manufacturing Co., Llc
StatusACTIVE
Bore ShapeSTRAIGHT FIRST END
Body MaterialCOPPER ALLOY AND STEEL
Bore Length1.5000 INCHES NOMINAL FIRST END IN
Bore Diameter0.7500 INCHES NOMINAL FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3040-01-443-32608671-103X9FT INTERCHANGEABLE
Shaft Assembly,flexible
B.w. Elliott Manufacturing Co., Llc
4820-01-444-0992512-6408364 INTERCHANGEABLE
Gear Operator,valve
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
4840-SF12-3 PRIMARY B.w. Elliott Manufacturing Co., Llc (USA)
512-6408364-10 Naval Sea Systems Command (USA)
4840-123 Elliott B W Mfg Co Llc Flex Shaft and Valve Control Product Lines (USA)
211058335 Naval Sea Systems Command (USA)
S04840-123 B.w. Elliott Manufacturing Co., Llc (USA)
4840SF12-3 Elliott B W Mfg Co Llc Flex Shaft and Valve Control Product Lines (USA)
6408364 Naval Sea Systems Command (USA)
Related Parts
3040-01-443-3260INTERCHANGEABLE
SHAFT ASSEMBLY,FLEXIBLE
8671-103X9FT
4820-01-444-0992INTERCHANGEABLE
GEAR OPERATOR,VALVE
512-6408364

Frequently Asked Questions

What is NSN 3010-00-388-0831?

NSN 3010-00-388-0831 is a Coupling,shaft,rigid, manufactured by B.w. Elliott Manufacturing Co., Llc, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-00-388-0831?

NSN 3010-00-388-0831 has 7 cross-referenced part numbers: 4840-SF12-3 (B.w. Elliott Manufacturing Co., Llc), 512-6408364-10 (Naval Sea Systems Command), 4840-123 (Elliott B W Mfg Co Llc Flex Shaft and Valve Control Product Lines), 211058335 (Naval Sea Systems Command), S04840-123 (B.w. Elliott Manufacturing Co., Llc) and 2 more.

What NSN replaces 3010-00-388-0831?

There are 2 known substitutes for 3010-00-388-0831: 3040-01-443-3260, 4820-01-444-0992. Verify interchangeability with system specifications before substitution.

What are the specifications of 4840-SF12-3?

Key specifications for 4840-SF12-3: Special Features: SECOND END 1.286 IN. LG SHAFT WITH KEYWAY AND PIN HOLE IN; Bore Shape: STRAIGHT FIRST END; Body Material: COPPER ALLOY AND STEEL; Bore Length: 1.5000 INCHES NOMINAL FIRST END IN. 7 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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