PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51A66Gasket

Surface Combustion Inc · NSN 5330-00-166-5509 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-166-5509 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-166-5509. Primary manufacturer part number: 51A66.
Features
  • Gasket — FSC 5330
  • Material: ASBESTOS OVERALL
  • Cross-Sectional Thickness: 0.062 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
  • 3 verified cross-references
  • Primary manufacturer: Surface Combustion Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Asbestos Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-166-5509, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Surface Combustion Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-166-5509
Primary Part Number51A66
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSurface Combustion Inc
StatusCANCELLED
MaterialASBESTOS OVERALL
Cross-Sectional Thickness0.062 INCHES NOMINAL IN
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5940-00-159-02483038-9006PC2 INTERCHANGEABLE
Terminal,stud
Northrop Grumman Systems Corporation
5330-01-465-985051A66 INTERCHANGEABLE
Gasket
Hartzell Engine Technologies Llc
Cross-Reference Index
Part NumberManufacturer
1660EG000 Us Army Aviation and Missile Command (USA)
51A66 Grimes Aerospace Company (USA)
51A66 PRIMARY Surface Combustion Inc (USA)
Related Parts
5940-00-159-0248INTERCHANGEABLE
TERMINAL,STUD
3038-9006PC2
5330-01-465-9850INTERCHANGEABLE
GASKET
51A66

Frequently Asked Questions

What is NSN 5330-00-166-5509?

NSN 5330-00-166-5509 is a Gasket, manufactured by Surface Combustion Inc, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-166-5509?

NSN 5330-00-166-5509 has 3 cross-referenced part numbers: 1660EG000 (Us Army Aviation and Missile Command), 51A66 (Grimes Aerospace Company), 51A66 (Surface Combustion Inc).

What NSN replaces 5330-00-166-5509?

There are 2 known substitutes for 5330-00-166-5509: 5940-00-159-0248, 5330-01-465-9850. Verify interchangeability with system specifications before substitution.

What are the specifications of 51A66?

Key specifications for 51A66: Material: ASBESTOS OVERALL; Cross-Sectional Thickness: 0.062 INCHES NOMINAL IN; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-166-5509 still in active supply?

NSN 5330-00-166-5509 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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