PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1221-303Connector,plug,electrical

Cinch Connectivity Solutions Inc. · NSN 5935-01-398-1604 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-398-1604 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-398-1604. Primary manufacturer part number: 1221-303.
Features
  • Connector,plug,electrical — FSC 5935
  • Overall Diameter: 9.91 MILLIMETERS MAXIMUM MM
  • Contact Position Arrangement Style: NONSTD SINGLE MATING END
  • Terminal Location: BACK SINGLE MATING END SINGLE CONTACT GROUPING
  • Included Contact Quantity: 1 SINGLE MATING END SINGLE CONTACT GROUPING
  • Polarization Method: KEYWAY OR MULTIPLE KEYWAY
  • Insert Position in Deg: 180.0
  • Terminal Type: SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,plug,electrical, cataloged under National Stock Number 5935-01-398-1604, is classified within Federal Supply Class 5935 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Cinch Connectivity Solutions Inc.. Government technical data includes 9 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-01-398-1604
Primary Part Number1221-303
Item NameConnector,plug,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerCinch Connectivity Solutions Inc.
StatusACTIVE
Overall Diameter9.91 MILLIMETERS MAXIMUM MM
Contact Position Arrangement StyleNONSTD SINGLE MATING END
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact Quantity1 SINGLE MATING END SINGLE CONTACT GROUPING
Polarization MethodKEYWAY OR MULTIPLE KEYWAY
Insert Position in Deg180.0
Terminal TypeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
Body StyleSTRAIGHT SHAPE
Mating End Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-01-111-9524 INTERCHANGEABLE
Reactor
Cross-Reference Index
Part NumberManufacturer
N7709611201 Airbus Helicopters (ets De Marignane) (FRA)
1221-303 PRIMARY Cinch Connectivity Solutions Inc. (USA)
Related Parts
5950-01-111-9524INTERCHANGEABLE
REACTOR

Frequently Asked Questions

What is NSN 5935-01-398-1604?

NSN 5935-01-398-1604 is a Connector,plug,electrical, manufactured by Cinch Connectivity Solutions Inc., classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-01-398-1604?

NSN 5935-01-398-1604 has 2 cross-referenced part numbers: N7709611201 (Airbus Helicopters (ets De Marignane)), 1221-303 (Cinch Connectivity Solutions Inc.).

What NSN replaces 5935-01-398-1604?

There is 1 known substitute for 5935-01-398-1604: 5950-01-111-9524. Verify interchangeability with system specifications before substitution.

What are the specifications of 1221-303?

Key specifications for 1221-303: Overall Diameter: 9.91 MILLIMETERS MAXIMUM MM; Contact Position Arrangement Style: NONSTD SINGLE MATING END; Terminal Location: BACK SINGLE MATING END SINGLE CONTACT GROUPING; Included Contact Quantity: 1 SINGLE MATING END SINGLE CONTACT GROUPING. 10 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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