PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PM21779Gasket

Mason Electric Co. Dba Mason Controls · NSN 5330-00-004-0427 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-004-0427 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-004-0427. Primary manufacturer part number: PM21779.
Features
  • Gasket — FSC 5330
  • Bolt Hole Quantity: 4
  • Aperture Diameter: 0.925 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN
  • Hole Diameter: 0.166 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Center to Center Distance Between Bolt Holes Along Width: 0.906 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Center to Center Distance Between Bolt Holes Along Length: 0.906 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Material: RUBBER SYNTHETIC OVERALL
  • Outside Edge to Bolt Hole Center Distance Along Length: 0.117 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-004-0427, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mason Electric Co. Dba Mason Controls. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-004-0427
Primary Part NumberPM21779
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMason Electric Co. Dba Mason Controls
StatusACTIVE
Bolt Hole Quantity4
Aperture Diameter0.925 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN
Hole Diameter0.166 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Center to Center Distance Between Bolt Holes Along Width0.906 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Center to Center Distance Between Bolt Holes Along Length0.906 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MaterialRUBBER SYNTHETIC OVERALL
Outside Edge to Bolt Hole Center Distance Along Length0.117 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Width0.117 INCHES NOMINAL IN
Cross-Sectional Thickness0.032 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3455-00-232-410219956 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5915-00-334-9495SM-D-78532 INTERCHANGEABLE
Network,pulse Forming
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2805-00-350-4048200376Y25 INTERCHANGEABLE
Lock,knuckle
Renk America Llc Div Renk America
2920-00-516-2718021779 INTERCHANGEABLE
Cap,ignition Distribution
Caterpillar Inc Div Caterpillar Defense
5365-01-063-749921779 INTERCHANGEABLE
Spacer,sleeve
Eaton Aerospace Llc
5330-01-267-0254 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
PM21779 PRIMARY Mason Electric Co. Dba Mason Controls (USA)
21779 Unison Industries Llc (USA)
21779 Mason Electric Co. Dba Mason Controls (USA)
21779 Amphenol Corp Div Amphenol Aerospace Operations (USA)
Related Parts
3455-00-232-4102INTERCHANGEABLE
REAMER,MACHINE
19956
5915-00-334-9495INTERCHANGEABLE
NETWORK,PULSE FORMING
SM-D-78532
2805-00-350-4048INTERCHANGEABLE
LOCK,KNUCKLE
200376Y25
2920-00-516-2718INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
021779
5365-01-063-7499INTERCHANGEABLE
SPACER,SLEEVE
21779
5330-01-267-0254INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 5330-00-004-0427?

NSN 5330-00-004-0427 is a Gasket, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-004-0427?

NSN 5330-00-004-0427 has 4 cross-referenced part numbers: PM21779 (Mason Electric Co. Dba Mason Controls), 21779 (Unison Industries Llc), 21779 (Mason Electric Co. Dba Mason Controls), 21779 (Amphenol Corp Div Amphenol Aerospace Operations).

What NSN replaces 5330-00-004-0427?

There are 6 known substitutes for 5330-00-004-0427: 3455-00-232-4102, 5915-00-334-9495, 2805-00-350-4048 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PM21779?

Key specifications for PM21779: Bolt Hole Quantity: 4; Aperture Diameter: 0.925 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN; Hole Diameter: 0.166 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Center to Center Distance Between Bolt Holes Along Width: 0.906 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. 13 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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