PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M39029/121-666Contact,electrical

Sae International Dba Sae International · NSN 5999-01-681-4474 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-681-4474 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-681-4474. Primary manufacturer part number: M39029/121-666.
Features
  • Contact,electrical — FSC 5999
  • Terminal Type and Quantity: 1 CRIMP BACK
  • Surface Treatment: GOLD CONTACT
  • Mounting Method: CRIMP
  • Cable Entrance Diameter: 0.046 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
  • Mounting Facility Quantity: 1
  • Overall Diameter: 0.127 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Precious Material and Location: CONTACT SURFACE GOLD
Applications
  • Applications requiring Copper Alloy Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-01-681-4474, 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 Sae International Dba Sae International. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-681-4474
Primary Part NumberM39029/121-666
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusACTIVE
Terminal Type and Quantity1 CRIMP BACK
Surface TreatmentGOLD CONTACT
Mounting MethodCRIMP
Cable Entrance Diameter0.046 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
Mounting Facility Quantity1
Overall Diameter0.127 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Precious Material and LocationCONTACT SURFACE GOLD
Precious MaterialGOLD
Style DesignatorSOCKET CONTACT
MaterialCOPPER ALLOY CONTACT
Terminal Type and Quantity1 CRIMP BACK
Surface TreatmentGOLD CONTACT
Mounting MethodCRIMP
Cable Entrance Diameter0.046 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN
Mounting Facility Quantity1
Overall Diameter0.127 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Precious Material and LocationCONTACT SURFACE GOLD
Precious MaterialGOLD
Style DesignatorSOCKET CONTACT
MaterialCOPPER ALLOY CONTACT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code1
Unit of IssueEA
SMR CodeJZ
Verified Substitutes 9
5999-01-109-4173M39029/76-424 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-200-7988M39029/56-349 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-502-7599M39029/93-597 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-530-1749M39029/9-136 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-681-4466M39029/121-664 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-681-4743M39029/121-667 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5999-01-681-4746M39029/122-673 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
5120-01-695-8460K496-1 INTERCHANGEABLE
Contact Positioner,terminal Crim
Daniels Manufacturing Corporation
5999-01-710-9769M39029/121-663 INTERCHANGEABLE
Contact,electrical
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
M39029/121-666 PRIMARY Sae International Dba Sae International (USA)
AS39029 Sae International Dba Sae International (USA)
SAE-AS39029/121 Sae International Dba Sae International (USA)
Related Parts
5999-01-109-4173INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/76-424
5999-01-200-7988INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/56-349
5999-01-502-7599INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/93-597
5999-01-530-1749INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/9-136
5999-01-681-4466INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/121-664
5999-01-681-4743INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/121-667
5999-01-681-4746INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/122-673
5120-01-695-8460INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
K496-1
5999-01-710-9769INTERCHANGEABLE
CONTACT,ELECTRICAL
M39029/121-663

Frequently Asked Questions

What is NSN 5999-01-681-4474?

NSN 5999-01-681-4474 is a Contact,electrical, manufactured by Sae International Dba Sae International, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-681-4474?

NSN 5999-01-681-4474 has 3 cross-referenced part numbers: M39029/121-666 (Sae International Dba Sae International), AS39029 (Sae International Dba Sae International), SAE-AS39029/121 (Sae International Dba Sae International).

What NSN replaces 5999-01-681-4474?

There are 9 known substitutes for 5999-01-681-4474: 5999-01-109-4173, 5999-01-200-7988, 5999-01-502-7599 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M39029/121-666?

Key specifications for M39029/121-666: Terminal Type and Quantity: 1 CRIMP BACK; Surface Treatment: GOLD CONTACT; Mounting Method: CRIMP; End Item Identification: 2355-01-648-7836. 26 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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