PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81551Felt,mechanical,preformed

Hydro-Aire Aerospace Corp · NSN 5330-00-121-3527 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-121-3527 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-121-3527. Primary manufacturer part number: 81551.
Features
  • Felt,mechanical,preformed — FSC 5330
  • Style Designator: RECTANGULAR
  • Cross-Sectional Width: 0.130 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Cross-Sectional Height: 0.070 INCHES NOMINAL IN
  • Material: WOOL OVERALL
  • 1 verified cross-reference
  • Primary manufacturer: Hydro-Aire Aerospace Corp
Applications
  • Applications requiring Wool Overall construction
General Description

The Felt,mechanical,preformed, cataloged under National Stock Number 5330-00-121-3527, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5330-00-121-3527
Primary Part Number81551
Item NameFelt,mechanical,preformed
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Style DesignatorRECTANGULAR
Cross-Sectional Width0.130 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Cross-Sectional Height0.070 INCHES NOMINAL IN
MaterialWOOL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2530-00-116-98352163190 INTERCHANGEABLE
Steering Wheel
Oshkosh Defense Llc
3110-00-180-7796G209SF INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
Cross-Reference Index
Part NumberManufacturer
81551 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
2530-00-116-9835INTERCHANGEABLE
STEERING WHEEL
2163190
3110-00-180-7796INTERCHANGEABLE
BEARING,BALL,ANNULAR
G209SF

Frequently Asked Questions

What is NSN 5330-00-121-3527?

NSN 5330-00-121-3527 is a Felt,mechanical,preformed, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-121-3527?

NSN 5330-00-121-3527 has 1 cross-referenced part number: 81551 (Hydro-Aire Aerospace Corp).

What NSN replaces 5330-00-121-3527?

There are 2 known substitutes for 5330-00-121-3527: 2530-00-116-9835, 3110-00-180-7796. Verify interchangeability with system specifications before substitution.

What are the specifications of 81551?

Key specifications for 81551: Style Designator: RECTANGULAR; Cross-Sectional Width: 0.130 INCHES NOMINAL IN; Overall Length: 20.190 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR. 7 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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