PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

KS-7Control Assembly,manual

Duro Dyne Corporation · NSN 4520-01-021-4951 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-021-4951 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-021-4951. Primary manufacturer part number: KS-7.
Features
  • Control Assembly,manual — FSC 4520
  • General Characteristics Item Description: STEEL,CONSITST OF LEVER/W/POINTER,1/4 BY 7/8 IN.THREADED BEARING,SPRING END BEARING IN
  • 2 verified cross-references
  • Primary manufacturer: Duro Dyne Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Control Assembly,manual, cataloged under National Stock Number 4520-01-021-4951, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Duro Dyne Corporation. Government technical data includes 1 verified specification, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-021-4951
Primary Part NumberKS-7
Item NameControl Assembly,manual
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerDuro Dyne Corporation
StatusACTIVE
General Characteristics Item DescriptionSTEEL,CONSITST OF LEVER/W/POINTER,1/4 BY 7/8 IN.THREADED BEARING,SPRING END BEARING IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2520-00-039-58314361 INTERCHANGEABLE
Housing
Eaton Corp Transmission Div
6780-00-096-7500 INTERCHANGEABLE
Camera Set,still Picture
5950-00-184-4823678-2390-00 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3455-00-243-217911880 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
5305-00-271-3570 INTERCHANGEABLE
Screw,machine
5120-00-277-1594 INTERCHANGEABLE
Wrench,box
5120-00-357-5182 INTERCHANGEABLE
Adapter,mechanical Puller
6625-00-458-8578 INTERCHANGEABLE
Adapter,test
5310-00-787-8900F1004-006 INTERCHANGEABLE
Washer,spring Tension
Barnes Group Inc. Dba Associated Spring Div Associated Spring Bristol
5999-00-879-406911018012-1 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
KS-7 Duro Dyne Corporation (USA)
8039 Duro Dyne Corporation (USA)
Related Parts
2520-00-039-5831INTERCHANGEABLE
HOUSING
4361
6780-00-096-7500INTERCHANGEABLE
CAMERA SET,STILL PICTURE
5950-00-184-4823INTERCHANGEABLE
REACTOR
678-2390-00
3455-00-243-2179INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11880
5305-00-271-3570INTERCHANGEABLE
SCREW,MACHINE
5120-00-277-1594INTERCHANGEABLE
WRENCH,BOX
5120-00-357-5182INTERCHANGEABLE
ADAPTER,MECHANICAL PULLER
6625-00-458-8578INTERCHANGEABLE
ADAPTER,TEST
5310-00-787-8900INTERCHANGEABLE
WASHER,SPRING TENSION
F1004-006
5999-00-879-4069INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
11018012-1
5360-01-190-1632INTERCHANGEABLE
SPRING
8039
2530-01-330-3285INTERCHANGEABLE
TANK,PRESSURE
8039

Frequently Asked Questions

What is NSN 4520-01-021-4951?

NSN 4520-01-021-4951 is a Control Assembly,manual, manufactured by Duro Dyne Corporation, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-021-4951?

NSN 4520-01-021-4951 has 2 cross-referenced part numbers: KS-7 (Duro Dyne Corporation), 8039 (Duro Dyne Corporation).

What NSN replaces 4520-01-021-4951?

There are 12 known substitutes for 4520-01-021-4951: 2520-00-039-5831, 6780-00-096-7500, 5950-00-184-4823 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of KS-7?

Key specifications for KS-7: End Item Identification: UP TO 10 IN.ROUND OR SQUARE DUCT IN; General Characteristics Item Description: STEEL,CONSITST OF LEVER/W/POINTER,1/4 BY 7/8 IN.THREADED BEARING,SPRING END BEARING IN. 2 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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