PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300778P2Retainer,electrical Shield

L3harris Technologies, Inc. Dba Harris Corporation · NSN 5999-00-644-5509 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-644-5509 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-644-5509. Primary manufacturer part number: 300778P2.
Features
  • Retainer,electrical Shield — FSC 5999
  • Accommodated Item Securing Device Type: FRICTION FASTENER
  • Distance Between Mounting Facility Centers: 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Surface Treatment: CADMIUM
  • Style Designator: CYLINDRICAL W/RECTANGULAR OR SQUARE BASE
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Unthreaded Mounting Hole Diameter: 0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Material: STEEL
Applications
  • Applications requiring Steel construction
General Description

The Retainer,electrical Shield, cataloged under National Stock Number 5999-00-644-5509, 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 L3harris Technologies, Inc. Dba Harris Corporation. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5999-00-644-5509
Primary Part Number300778P2
Item NameRetainer,electrical Shield
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Dba Harris Corporation
StatusACTIVE
Accommodated Item Securing Device TypeFRICTION FASTENER
Distance Between Mounting Facility Centers0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Surface TreatmentCADMIUM
Style DesignatorCYLINDRICAL W/RECTANGULAR OR SQUARE BASE
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
MaterialSTEEL
Overall Diameter0.906 INCHES NOMINAL IN
Accommodated Item Securing Device TypeFRICTION FASTENER
Distance Between Mounting Facility Centers0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Surface TreatmentCADMIUM
Style DesignatorCYLINDRICAL W/RECTANGULAR OR SQUARE BASE
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
MaterialSTEEL
Overall Diameter0.906 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5999-00-039-5785 (1022)
HAZMATNo
Verified Substitutes 8
Retainer,electrical Shield
5999-00-039-57851022 SUCCESSOR
Contact,electrical
Lockheed Martin Corporation Div Rms - Mitchel Field
5999-00-161-4685BA10114-4 SUCCESSOR
Retainer,electrical Shield
Cinch Connectivity Solutions Inc.
6625-00-243-31321022 SUCCESSOR
Indicator,phase Sequence
Q V S Inc
6625-00-948-30021022 SUCCESSOR
Meter,drill Depth
Schenck Usa Corp. Dba Schenck Usa Corp
5999-01-031-19551022 SUCCESSOR
Shielding Gasket,electronic
Leidos, Inc. Div Cyber and Information Solutions Services
6625-01-062-8029989C553H01 SUCCESSOR
Meter,special Scale
Northrop Grumman Systems Corporation Dba Electronic Systems
6625-00-615-4490SG-89/UPM-68 INTERCHANGEABLE
Generator,pulse
Joint Electronics Type Designation System
Cross-Reference Index
Part NumberManufacturer
1022 Cinch Connectivity Solutions Inc. (USA)
300778P2 PRIMARY L3harris Technologies, Inc. Dba Harris Corporation (USA)
Related Parts
SUCCESSOR 5999-00-039-5785 Contact,electrical · 1022
5999-00-549-8629SUCCESSOR
RETAINER,ELECTRICAL SHIELD
5999-00-161-4685SUCCESSOR
RETAINER,ELECTRICAL SHIELD
BA10114-4
6625-00-243-3132SUCCESSOR
INDICATOR,PHASE SEQUENCE
1022
6625-00-948-3002SUCCESSOR
METER,DRILL DEPTH
1022
5999-01-031-1955SUCCESSOR
SHIELDING GASKET,ELECTRONIC
1022
6625-01-062-8029SUCCESSOR
METER,SPECIAL SCALE
989C553H01
6625-00-615-4490INTERCHANGEABLE
GENERATOR,PULSE
SG-89/UPM-68

Frequently Asked Questions

What is NSN 5999-00-644-5509?

NSN 5999-00-644-5509 is a Retainer,electrical Shield, manufactured by L3harris Technologies, Inc. Dba Harris Corporation, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-644-5509?

NSN 5999-00-644-5509 has 2 cross-referenced part numbers: 1022 (Cinch Connectivity Solutions Inc.), 300778P2 (L3harris Technologies, Inc. Dba Harris Corporation).

What NSN replaces 5999-00-644-5509?

There are 8 known substitutes for 5999-00-644-5509: 5999-00-549-8629, 5999-00-039-5785, 5999-00-161-4685 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 300778P2?

Key specifications for 300778P2: Overall Length: 1.125 INCHES NOMINAL IN; Accommodated Item Securing Device Type: FRICTION FASTENER; Distance Between Mounting Facility Centers: 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Surface Treatment: CADMIUM. 22 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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