PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

645A851H01Seal,waveguide

Northrop Grumman Support Services Corp · NSN 5985-01-288-0616 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-288-0616 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-288-0616. Primary manufacturer part number: 645A851H01.
Features
  • Seal,waveguide — FSC 5985
  • Style Designator: CIRCULAR SOLID SEAL
  • Material: ALUMINUM FIRST SEAL
  • Seal Outside Height: 3.560 INCHES NOMINAL IN
  • Material: PLASTIC SECOND SEAL
  • Seal Thickness: 0.375 INCHES NOMINAL IN
  • Seal Outside Width: 2.680 INCHES NOMINAL IN
  • Criticality Code Justification: FEAT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Aluminum First Seal construction
General Description

The Seal,waveguide, cataloged under National Stock Number 5985-01-288-0616, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 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
NSN5985-01-288-0616
Primary Part Number645A851H01
Item NameSeal,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Style DesignatorCIRCULAR SOLID SEAL
MaterialALUMINUM FIRST SEAL
Seal Outside Height3.560 INCHES NOMINAL IN
MaterialPLASTIC SECOND SEAL
Seal Thickness0.375 INCHES NOMINAL IN
Seal Outside Width2.680 INCHES NOMINAL IN
Criticality Code JustificationFEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5340-00-085-26152098-1 INTERCHANGEABLE
Cover,access
Rockwell Collins, Inc. Dba Rc Displays Systems
5999-00-284-43421093A INTERCHANGEABLE
Retainer,electrical Shield
Cinch Connectivity Solutions Inc.
6760-00-880-83892098-1 INTERCHANGEABLE
Intervalometer,aircraft Camera
Dne Technologies, Inc
5330-01-123-219020981 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
5930-01-159-51042098-1 INTERCHANGEABLE
Switch,push
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
3040-01-238-8739 INTERCHANGEABLE
Connecting Link,rigid
Cross-Reference Index
Part NumberManufacturer
20981 Waveline Inc (USA)
645A851H01 Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA)
645A851 Northrop Grumman Support Services Corp (USA)
645A851H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
645A851H01 Waveline Inc (USA)
645A851H01 Frontgrade Technologies Inc. (USA)
645A851H01 Cobham Advanced Electronic Solutions Inc. (USA)
645A851 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
645A851H01 PRIMARY Northrop Grumman Support Services Corp (USA)
645A851H01 Microtech Inc Dba Microtech Inc (USA)
645A851H01 Microwave Engineering Corporation (USA)
645A851H01 Victor Microwave, Inc (USA)
Related Parts
5340-00-085-2615INTERCHANGEABLE
COVER,ACCESS
2098-1
5999-00-284-4342INTERCHANGEABLE
RETAINER,ELECTRICAL SHIELD
1093A
6760-00-880-8389INTERCHANGEABLE
INTERVALOMETER,AIRCRAFT CAMERA
2098-1
5330-01-123-2190INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
20981
5930-01-159-5104INTERCHANGEABLE
SWITCH,PUSH
2098-1
3040-01-238-8739INTERCHANGEABLE
CONNECTING LINK,RIGID

Frequently Asked Questions

What is NSN 5985-01-288-0616?

NSN 5985-01-288-0616 is a Seal,waveguide, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-288-0616?

NSN 5985-01-288-0616 has 12 cross-referenced part numbers: 20981 (Waveline Inc), 645A851H01 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc), 645A851 (Northrop Grumman Support Services Corp), 645A851H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 645A851H01 (Waveline Inc) and 7 more.

What NSN replaces 5985-01-288-0616?

There are 6 known substitutes for 5985-01-288-0616: 5340-00-085-2615, 5999-00-284-4342, 6760-00-880-8389 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 645A851H01?

Key specifications for 645A851H01: Style Designator: CIRCULAR SOLID SEAL; Material: ALUMINUM FIRST SEAL; Seal Outside Height: 3.560 INCHES NOMINAL IN; End Item Identification: GROUND THEATER AIR CONTROL SYSTEM (GTACS). 9 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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