PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BA3957Gasket

Stillman Seal Corporation Div Stillman Seal Corperation · NSN 5330-00-839-2851 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-839-2851 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-839-2851. Primary manufacturer part number: BA3957.
Features
  • Gasket — FSC 5330
  • Material: STEEL CORROSION RESISTING OVERALL
  • Hole Diameter: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Outside Corner Radius: 0.375 INCHES NOMINAL IN
  • Outside Edge to Bolt Hole Center Distance Along Length: 0.437 INCHES NOMINAL IN
  • Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR METAL
  • Center to Center Distance Between Bolt Holes Along Width: 1.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-00-839-2851, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stillman Seal Corporation Div Stillman Seal Corperation. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-839-2851
Primary Part NumberBA3957
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerStillman Seal Corporation Div Stillman Seal Corperation
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OVERALL
Hole Diameter0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outside Corner Radius0.375 INCHES NOMINAL IN
Outside Edge to Bolt Hole Center Distance Along Length0.437 INCHES NOMINAL IN
Cross-Sectional Thickness0.031 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR METAL
Center to Center Distance Between Bolt Holes Along Width1.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Bolt Hole Quantity4
Center to Center Distance Between Bolt Holes Along Length2.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outside Edge to Bolt Hole Center Distance Along Width0.437 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
2520-00-164-545622851 INTERCHANGEABLE
Gear and Shaft
Eaton Corporation
2825-00-390-4165 INTERCHANGEABLE
Cylinder,relay
6240-01-017-73224017 INTERCHANGEABLE
Lamp,incandescent
Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
5330-01-224-806540168 INTERCHANGEABLE
Gasket
Lubriquip Inc Dba Lubriquip, Inc., a Unit of Idex
5330-01-458-251140171 INTERCHANGEABLE
Gasket
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5340-01-478-9339 INTERCHANGEABLE
Extension Handle
5310-01-549-770840171 INTERCHANGEABLE
Nut,self-Locking,hexagon
Fastenal Company Dba Fastenal Co
5340-01-578-604240171 INTERCHANGEABLE
Plate,mounting
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
2990-01-671-3860648695 INTERCHANGEABLE
Actuator,electro-Mechanical,line
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump and Power Division
Cross-Reference Index
Part NumberManufacturer
648695 Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
C455-1 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
BA3957 PRIMARY Stillman Seal Corporation Div Stillman Seal Corperation (USA)
40171 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
Related Parts
2520-00-164-5456INTERCHANGEABLE
GEAR AND SHAFT
22851
2825-00-390-4165INTERCHANGEABLE
CYLINDER,RELAY
6240-01-017-7322INTERCHANGEABLE
LAMP,INCANDESCENT
4017
5330-01-224-8065INTERCHANGEABLE
GASKET
40168
5330-01-458-2511INTERCHANGEABLE
GASKET
40171
5340-01-478-9339INTERCHANGEABLE
EXTENSION HANDLE
5310-01-549-7708INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
40171
5340-01-578-6042INTERCHANGEABLE
PLATE,MOUNTING
40171
2990-01-671-3860INTERCHANGEABLE
ACTUATOR,ELECTRO-MECHANICAL,LINE
648695

Frequently Asked Questions

What is NSN 5330-00-839-2851?

NSN 5330-00-839-2851 is a Gasket, manufactured by Stillman Seal Corporation Div Stillman Seal Corperation, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-839-2851?

NSN 5330-00-839-2851 has 4 cross-referenced part numbers: 648695 (Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division), C455-1 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), BA3957 (Stillman Seal Corporation Div Stillman Seal Corperation), 40171 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).

What NSN replaces 5330-00-839-2851?

There are 9 known substitutes for 5330-00-839-2851: 2520-00-164-5456, 2825-00-390-4165, 6240-01-017-7322 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BA3957?

Key specifications for BA3957: Material: STEEL CORROSION RESISTING OVERALL; Hole Diameter: 0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Overall Length: 3.125 INCHES NOMINAL IN; Outside Corner Radius: 0.375 INCHES NOMINAL 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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