PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

115452Housing Spring

Hdt Expeditionary Systems Inc · NSN 4520-00-404-4310 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-404-4310 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-404-4310. Primary manufacturer part number: 115452.
Features
  • Housing Spring — FSC 4520
  • 3 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Housing Spring, cataloged under National Stock Number 4520-00-404-4310, 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 Hdt Expeditionary Systems Inc. This item has 3 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.

Catalog Facts
Item NameHousing Spring
FSC / FSG4520 — No Item Name Available (FSG 45)
ManufacturersEngineered Air Systems, Inc. Dba Drs Sustainment Systems (CAGE 90598); Drs Environmental Systems Inc (CAGE 5RQL2); Hdt Expeditionary Systems Inc (CAGE 92878)
Technical Specifications
ParameterValue
NSN4520-00-404-4310
Primary Part Number115452
Item NameHousing Spring
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5340-00-211-8742115452 INTERCHANGEABLE
Retainer,helical Compression Spr
Suntec Industries Inc Del Dba Suntec
5330-01-222-6931115452 INTERCHANGEABLE
Gasket
Lake Shore Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
115452 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
115452 Drs Environmental Systems Inc (USA)
115452 PRIMARY Hdt Expeditionary Systems Inc (USA)
Related Parts
5340-00-211-8742INTERCHANGEABLE
RETAINER,HELICAL COMPRESSION SPR
115452
5330-01-222-6931INTERCHANGEABLE
GASKET
115452

Frequently Asked Questions

What is NSN 4520-00-404-4310?

NSN 4520-00-404-4310 is a Housing Spring, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-404-4310?

NSN 4520-00-404-4310 has 3 cross-referenced part numbers: 115452 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), 115452 (Drs Environmental Systems Inc), 115452 (Hdt Expeditionary Systems Inc).

What NSN replaces 4520-00-404-4310?

There are 2 known substitutes for 4520-00-404-4310: 5340-00-211-8742, 5330-01-222-6931. Verify interchangeability with system specifications before substitution.

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