PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C547-405Spring Assembly,leaf

L3 Technologies, Inc. Div L3 Keo · NSN 2040-00-778-0677 · FSC 2040 · No Item Name Available
Verified by PartsTable
NSN 2040-00-778-0677 — this item is cataloged by the U.S. Government under National Stock Number 2040-00-778-0677. Primary manufacturer part number: C547-405.
Features
  • Spring Assembly,leaf — FSC 2040
  • General Characteristics Item Description: STEEL,QQ-S-763 CL F5-410 COND F-FULL HARDNESS AND STEEL,QQ-S-763 CLASS 303-A
  • 4 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc. Div L3 Keo
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring Assembly,leaf, cataloged under National Stock Number 2040-00-778-0677, is classified within Federal Supply Class 2040 (No Item Name Available) of the Ship and Marine Equipment group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN2040-00-778-0677
Primary Part NumberC547-405
Item NameSpring Assembly,leaf
FSC / FSG2040 / 20 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
General Characteristics Item DescriptionSTEEL,QQ-S-763 CL F5-410 COND F-FULL HARDNESS AND STEEL,QQ-S-763 CLASS 303-A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4920-00-447-64823-4-1-7 INTERCHANGEABLE
Thrust Tie Down Yok
Celtech Corporation Div Use CAGE 65552 for All Orders
4220-01-341-2409300-F-SS INTERCHANGEABLE
Adapter,quick Connect and Discon
Dixon Valve & Coupling Company, Llc Div Dixon Fire
Cross-Reference Index
Part NumberManufacturer
547C002848 Northrop Grumman Systems Corporation (USA)
C547-405 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
002848 L3 Technologies, Inc. Div L3 Keo (USA)
547C002848 L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
4920-00-447-6482INTERCHANGEABLE
THRUST TIE DOWN YOK
3-4-1-7
4220-01-341-2409INTERCHANGEABLE
ADAPTER,QUICK CONNECT AND DISCON
300-F-SS

Frequently Asked Questions

What is NSN 2040-00-778-0677?

NSN 2040-00-778-0677 is a Spring Assembly,leaf, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 2040 (No Item Name Available). Status: active.

What are the part numbers for NSN 2040-00-778-0677?

NSN 2040-00-778-0677 has 4 cross-referenced part numbers: 547C002848 (Northrop Grumman Systems Corporation), C547-405 (L3 Technologies, Inc. Div L3 Keo), 002848 (L3 Technologies, Inc. Div L3 Keo), 547C002848 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 2040-00-778-0677?

There are 2 known substitutes for 2040-00-778-0677: 4920-00-447-6482, 4220-01-341-2409. Verify interchangeability with system specifications before substitution.

What are the specifications of C547-405?

Key specifications for C547-405: General Characteristics Item Description: STEEL,QQ-S-763 CL F5-410 COND F-FULL HARDNESS AND STEEL,QQ-S-763 CLASS 303-A. 1 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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