PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11223Contact Assembly,electrical

Lockheed Martin Corp Lockheed Martin Mission Systems · NSN 5999-00-335-1620 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-335-1620 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-335-1620. Primary manufacturer part number: 11223.
Features
  • Contact Assembly,electrical — FSC 5999
  • Structural Design: NONSWITCHING
  • Contact Identifying Number Assigned by Government Agency: 03744
  • Mounting Configuration: TWO 3/16 IN. DIA MTG HOLES ON 1/4 IN. CENTERS IN
  • Contact Quantity: 4
  • Contact Item Name Assigned by Government Agency: CONTACT ASSY
  • Government Agency Controlling Contact: USN
  • Structural Design: NONSWITCHING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Contact Assembly,electrical, cataloged under National Stock Number 5999-00-335-1620, 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 Lockheed Martin Corp Lockheed Martin Mission Systems. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5999-00-335-1620
Primary Part Number11223
Item NameContact Assembly,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerLockheed Martin Corp Lockheed Martin Mission Systems
StatusACTIVE
Structural DesignNONSWITCHING
Contact Identifying Number Assigned by Government Agency03744
Mounting ConfigurationTWO 3/16 IN. DIA MTG HOLES ON 1/4 IN. CENTERS IN
Contact Quantity4
Contact Item Name Assigned by Government AgencyCONTACT ASSY
Government Agency Controlling ContactUSN
Structural DesignNONSWITCHING
Contact Identifying Number Assigned by Government Agency03744
Mounting ConfigurationTWO 3/16 IN. DIA MTG HOLES ON 1/4 IN. CENTERS IN
Contact Quantity4
Contact Item Name Assigned by Government AgencyCONTACT ASSY
Government Agency Controlling ContactUSN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-167-820811223 INTERCHANGEABLE
Seal,plain
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4730-00-173-721811-223 INTERCHANGEABLE
Elbow,overflow
Pakon Inc Dba Impak Division
5136-00-204-1644C54211 INTERCHANGEABLE
Tap,thread Cutting
Greenfield Industries Inc
5945-00-258-3072NA13471 INTERCHANGEABLE
Relay,electromagnetic
Meggitt (new Hampshire), Inc
3040-00-393-452711223 INTERCHANGEABLE
Collar,shaft
Rexnord Industries, Llc Div Couplings Division
5930-00-482-035710177144-2 INTERCHANGEABLE
Switch,rotary
Us Army Aviation and Missile Command
4820-00-523-8161202744 INTERCHANGEABLE
Diaphragm,valve,flat
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5136-00-580-7156316321 INTERCHANGEABLE
Tap,thread Cutting
Stanley Tools Div of Stanley Works
3020-00-692-648811223 INTERCHANGEABLE
Gear Cluster
Electronic Associates Inc
3010-00-776-589211223 INTERCHANGEABLE
Coupling,shaft,rigid
Rps-Fl, Inc. Dba Rps Inc
Cross-Reference Index
Part NumberManufacturer
11223 Lockheed Martin Corp Lockheed Martin Mission Systems (USA)
EE11223 Lockheed Martin Corp Lockheed Martin Mission Systems (USA)
C3744 Cooper Industries Inc Busmann Mfg Div (USA)
Related Parts
5330-00-167-8208INTERCHANGEABLE
SEAL,PLAIN
11223
4730-00-173-7218INTERCHANGEABLE
ELBOW,OVERFLOW
11-223
5136-00-204-1644INTERCHANGEABLE
TAP,THREAD CUTTING
C54211
5945-00-258-3072INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
NA13471
3040-00-393-4527INTERCHANGEABLE
COLLAR,SHAFT
11223
5930-00-482-0357INTERCHANGEABLE
SWITCH,ROTARY
10177144-2
4820-00-523-8161INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
202744
5136-00-580-7156INTERCHANGEABLE
TAP,THREAD CUTTING
316321
3020-00-692-6488INTERCHANGEABLE
GEAR CLUSTER
11223
3010-00-776-5892INTERCHANGEABLE
COUPLING,SHAFT,RIGID
11223
5935-01-126-8212INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
SM-A-937268
6250-01-166-5050INTERCHANGEABLE
LAMPHOLDER
11-223

Frequently Asked Questions

What is NSN 5999-00-335-1620?

NSN 5999-00-335-1620 is a Contact Assembly,electrical, manufactured by Lockheed Martin Corp Lockheed Martin Mission Systems, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-335-1620?

NSN 5999-00-335-1620 has 3 cross-referenced part numbers: 11223 (Lockheed Martin Corp Lockheed Martin Mission Systems), EE11223 (Lockheed Martin Corp Lockheed Martin Mission Systems), C3744 (Cooper Industries Inc Busmann Mfg Div).

What NSN replaces 5999-00-335-1620?

There are 12 known substitutes for 5999-00-335-1620: 5330-00-167-8208, 4730-00-173-7218, 5136-00-204-1644 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11223?

Key specifications for 11223: Overall Height: 0.156 INCHES NOMINAL IN; Structural Design: NONSWITCHING; Contact Identifying Number Assigned by Government Agency: 03744; Overall Width: 0.312 INCHES NOMINAL IN. 18 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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