PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5531Gasket

R.w. Fernstrum & Company · NSN 5330-01-668-3731 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-668-3731 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-668-3731. Primary manufacturer part number: 5531.
Features
  • Gasket — FSC 5330
  • 3 verified cross-references
  • Primary manufacturer: R.w. Fernstrum & Company
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Gasket, cataloged under National Stock Number 5330-01-668-3731, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is R.w. Fernstrum & Company. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGasket
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersR.w. Fernstrum & Company (CAGE 98396); Birdon Pty Ltd (CAGE Z0PP1)
Technical Specifications
ParameterValue
NSN5330-01-668-3731
Primary Part Number5531
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerR.w. Fernstrum & Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5330-00-138-4561181W27 INTERCHANGEABLE
Seal,inside,upper
Cone Drive Operations Inc
5310-00-143-64915S3-1 INTERCHANGEABLE
Washer,split
Howmet Global Fastening Systems Inc Div Camloc Products
5330-00-337-54675531 INTERCHANGEABLE
Seal,oil,reverse Tr
Eaton Corp Transmission Div
5310-00-530-996358A122A1678 INTERCHANGEABLE
Washer,split
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-830-79735531 INTERCHANGEABLE
Nut,self-Locking,spline
Goodrich Aerospace Canada Ltd
2995-00-969-1053 INTERCHANGEABLE
Plate,nutating
5930-01-094-8115SM-A-802900-1 INTERCHANGEABLE
Switch,flow
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6150-01-316-2267 INTERCHANGEABLE
Bus,conductor
4320-01-348-1565CW7299 PIECE 5531 INTERCHANGEABLE
Rotor,pump
Megator Corp
5985-01-705-4696553-1 INTERCHANGEABLE
Seal,waveguide
Applied Systems Engineering Inc
Cross-Reference Index
Part NumberManufacturer
5531 PRIMARY R.w. Fernstrum & Company (USA)
5531 Birdon Pty Ltd (AUS)
DA6132U-S1-1 ITEM NO 11 R.w. Fernstrum & Company (USA)
Related Parts
5330-00-138-4561INTERCHANGEABLE
SEAL,INSIDE,UPPER
181W27
5310-00-143-6491INTERCHANGEABLE
WASHER,SPLIT
5S3-1
5330-00-337-5467INTERCHANGEABLE
SEAL,OIL,REVERSE TR
5531
5310-00-530-9963INTERCHANGEABLE
WASHER,SPLIT
58A122A1678
5310-00-830-7973INTERCHANGEABLE
NUT,SELF-LOCKING,SPLINE
5531
2995-00-969-1053INTERCHANGEABLE
PLATE,NUTATING
5930-01-094-8115INTERCHANGEABLE
SWITCH,FLOW
SM-A-802900-1
6150-01-316-2267INTERCHANGEABLE
BUS,CONDUCTOR
4320-01-348-1565INTERCHANGEABLE
ROTOR,PUMP
CW7299 PIECE 5531
5985-01-705-4696INTERCHANGEABLE
SEAL,WAVEGUIDE
553-1

Frequently Asked Questions

What is NSN 5330-01-668-3731?

NSN 5330-01-668-3731 is a Gasket, manufactured by R.w. Fernstrum & Company, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-668-3731?

NSN 5330-01-668-3731 has 3 cross-referenced part numbers: 5531 (R.w. Fernstrum & Company), 5531 (Birdon Pty Ltd), DA6132U-S1-1 ITEM NO 11 (R.w. Fernstrum & Company).

What NSN replaces 5330-01-668-3731?

There are 10 known substitutes for 5330-01-668-3731: 5330-00-138-4561, 5310-00-143-6491, 5330-00-337-5467 and 7 more. Verify interchangeability with system specifications before substitution.

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