PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54303Gasket

L3 Technologies, Inc. Div L3 Keo · NSN 5330-01-459-5990 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-459-5990 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-459-5990. Primary manufacturer part number: 54303.
Features
  • Gasket — FSC 5330
  • Material: RUBBER CHLOROPRENE CLASS CR OVERALL
  • Center to Center Distance Between Bolt Holes Along Length: 0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
  • Aperture Diameter: 0.605 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
  • Center to Center Distance Between Bolt Holes Along Width: 0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
  • Hole Diameter: 0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
  • Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN
  • Material Document and Classification: MIL-G-1149,TY1,CL1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Chloroprene Class Cr Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-459-5990, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-459-5990
Primary Part Number54303
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Center to Center Distance Between Bolt Holes Along Length0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
Aperture Diameter0.605 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
Center to Center Distance Between Bolt Holes Along Width0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
Hole Diameter0.105 INCHES MINIMUM AND 0.145 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
Cross-Sectional Thickness0.031 INCHES NOMINAL IN
Material Document and ClassificationMIL-G-1149,TY1,CL1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Bolt Hole Quantity4
Style DesignatorNON-CIRCULAR
Cross-Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5136-00-199-671554303 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5331-00-291-7353 INTERCHANGEABLE
O-Ring
5995-01-710-4595C2G 54303 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Cables to Go
Cross-Reference Index
Part NumberManufacturer
885C054303 L3 Technologies, Inc. Div L3 Keo (USA)
54303 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
5136-00-199-6715INTERCHANGEABLE
TAP,THREAD CUTTING
54303
5331-00-291-7353INTERCHANGEABLE
O-RING
5995-01-710-4595INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
C2G 54303

Frequently Asked Questions

What is NSN 5330-01-459-5990?

NSN 5330-01-459-5990 is a Gasket, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-459-5990?

NSN 5330-01-459-5990 has 2 cross-referenced part numbers: 885C054303 (L3 Technologies, Inc. Div L3 Keo), 54303 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 5330-01-459-5990?

There are 3 known substitutes for 5330-01-459-5990: 5136-00-199-6715, 5331-00-291-7353, 5995-01-710-4595. Verify interchangeability with system specifications before substitution.

What are the specifications of 54303?

Key specifications for 54303: Material: RUBBER CHLOROPRENE CLASS CR OVERALL; Center to Center Distance Between Bolt Holes Along Length: 0.574 INCHES MINIMUM AND 0.614 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN; Overall Width: 0.855 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN; Aperture Diameter: 0.605 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com