PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

287-1254P1Shielding Gasket,electronic

Raytheon Company Dba Raytheon Co · NSN 5999-00-707-3257 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-707-3257 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-707-3257. Primary manufacturer part number: 287-1254P1.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Aperture Length: 6.500 INCHES NOMINAL IN
  • Environmental Protection Material Location: IN SEALING GASKET APERTURE
  • Surface Treatment: UNABLE TO DECODE
  • Cross-Sectional Thickness: 0.156 INCHES NOMINAL IN
  • Aperture Width: 3.250 INCHES NOMINAL IN
  • Aperture Length: 6.500 INCHES NOMINAL IN
  • Environmental Protection Material Location: IN SEALING GASKET APERTURE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Shielding Gasket,electronic, cataloged under National Stock Number 5999-00-707-3257, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-707-3257
Primary Part Number287-1254P1
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon Co
StatusACTIVE
Aperture Length6.500 INCHES NOMINAL IN
Environmental Protection Material LocationIN SEALING GASKET APERTURE
Surface TreatmentUNABLE TO DECODE
Cross-Sectional Thickness0.156 INCHES NOMINAL IN
Aperture Width3.250 INCHES NOMINAL IN
Aperture Length6.500 INCHES NOMINAL IN
Environmental Protection Material LocationIN SEALING GASKET APERTURE
Surface TreatmentUNABLE TO DECODE
Cross-Sectional Thickness0.156 INCHES NOMINAL IN
Aperture Width3.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeVN
Weight0.2500 lbs
Cube0.0069 cu ft
Verified Substitutes 1
5340-00-989-7250139 INTERCHANGEABLE
Strap,retaining
Zierick Mfg Corp
Cross-Reference Index
Part NumberManufacturer
5900-650 Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
287-1254P1 Raytheon Company (USA)
900-5017 Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA)
648454 Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
287-1254P1 Raytheon Company Div Corp (USA)
287-1254P1 PRIMARY Raytheon Company Dba Raytheon Co (USA)
Related Parts
5340-00-989-7250INTERCHANGEABLE
STRAP,RETAINING
139

Frequently Asked Questions

What is NSN 5999-00-707-3257?

NSN 5999-00-707-3257 is a Shielding Gasket,electronic, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-707-3257?

NSN 5999-00-707-3257 has 6 cross-referenced part numbers: 5900-650 (Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division), 287-1254P1 (Raytheon Company), 900-5017 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division), 648454 (Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division), 287-1254P1 (Raytheon Company Div Corp) and 1 more.

What NSN replaces 5999-00-707-3257?

There is 1 known substitute for 5999-00-707-3257: 5340-00-989-7250. Verify interchangeability with system specifications before substitution.

What are the specifications of 287-1254P1?

Key specifications for 287-1254P1: Aperture Length: 6.500 INCHES NOMINAL IN; Environmental Protection Material Location: IN SEALING GASKET APERTURE; Surface Treatment: UNABLE TO DECODE; Cross-Sectional Thickness: 0.156 INCHES NOMINAL IN. 12 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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