PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70-71Plunger Assembly,ja

Lear Siegler Inc Astro Structures Div · NSN 1730-00-521-9959 · FSC 1730 · No Item Name Available
Verified by PartsTable
NSN 1730-00-521-9959 — this item is cataloged by the U.S. Government under National Stock Number 1730-00-521-9959. Primary manufacturer part number: 70-71.
Features
  • Plunger Assembly,ja — FSC 1730
  • 1 verified cross-reference
  • Primary manufacturer: Lear Siegler Inc Astro Structures Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Plunger Assembly,ja, cataloged under National Stock Number 1730-00-521-9959, is classified within Federal Supply Class 1730 (No Item Name Available) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The primary manufacturer of record is Lear Siegler Inc Astro Structures Div. This item has 1 commercial cross-reference 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.

Catalog Facts
Item NamePlunger Assembly,ja
FSC / FSG1730 — No Item Name Available (FSG 17)
ManufacturersLear Siegler Inc Astro Structures Div (CAGE 29683)
Technical Specifications
ParameterValue
NSN1730-00-521-9959
Primary Part Number70-71
Item NamePlunger Assembly,ja
FSC / FSG1730 / 17 — No Item Name Available
ManufacturerLear Siegler Inc Astro Structures Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-080-1630G360578-4 INTERCHANGEABLE
Coil,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3110-00-156-4218202554-29 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5975-00-245-1690 INTERCHANGEABLE
Conduit Outlet
6680-00-399-26757071 INTERCHANGEABLE
Connector,equalizer
King Engineering Corporation Dba King-Gage Systems
6515-00-451-2604 INTERCHANGEABLE
Stockings,anti-Embolism
2805-00-516-932814S43 INTERCHANGEABLE
Ring Set,piston
Spirolox Inc
5910-00-669-2730KM0C2M025X2-10 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Custom Capacitors, Inc. Dba Custom Capacitors Inc
5950-00-710-03267071 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5950-00-754-6953 INTERCHANGEABLE
Coil,radio Frequency
6250-00-955-07027-07-1 INTERCHANGEABLE
Lampholder
Dialight Corporation
Cross-Reference Index
Part NumberManufacturer
70-71 Lear Siegler Inc Astro Structures Div (USA)
Related Parts
5950-00-080-1630INTERCHANGEABLE
COIL,RADIO FREQUENCY
G360578-4
3110-00-156-4218INTERCHANGEABLE
BEARING,BALL,ANNULAR
202554-29
5975-00-245-1690INTERCHANGEABLE
CONDUIT OUTLET
6680-00-399-2675INTERCHANGEABLE
CONNECTOR,EQUALIZER
7071
6515-00-451-2604INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM
2805-00-516-9328INTERCHANGEABLE
RING SET,PISTON
14S43
5910-00-669-2730INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
KM0C2M025X2-10
5950-00-710-0326INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
7071
5950-00-754-6953INTERCHANGEABLE
COIL,RADIO FREQUENCY
6250-00-955-0702INTERCHANGEABLE
LAMPHOLDER
7-07-1
5340-01-039-4396INTERCHANGEABLE
STUD,FRICTION CATCH
70-7-1
6515-01-121-6481INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM

Frequently Asked Questions

What is NSN 1730-00-521-9959?

NSN 1730-00-521-9959 is a Plunger Assembly,ja, manufactured by Lear Siegler Inc Astro Structures Div, classified under FSC 1730 (No Item Name Available). Status: active.

What are the part numbers for NSN 1730-00-521-9959?

NSN 1730-00-521-9959 has 1 cross-referenced part number: 70-71 (Lear Siegler Inc Astro Structures Div).

What NSN replaces 1730-00-521-9959?

There are 12 known substitutes for 1730-00-521-9959: 5950-00-080-1630, 3110-00-156-4218, 5975-00-245-1690 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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