PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2509ATerminal,feedthru

Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect · NSN 5940-00-544-6146 · FSC 5940 · No Item Name Available
Verified by PartsTable
NSN 5940-00-544-6146 — this item is cataloged by the U.S. Government under National Stock Number 5940-00-544-6146. Primary manufacturer part number: 2509A.
Features
  • Terminal,feedthru — FSC 5940
  • Turret Minor Diameter: 0.038 INCHES SINGLE END IN
  • Major Bushing Diameter: 0.094 INCHES IN
  • Surface Treatment: SILVER OVERALL EXCEPT INSULATION SINGLE LAYER
  • First End Terminal Length: 0.169 INCHES IN
  • Material Document and Classification: QQ-B-626,COM+22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSULATION
  • Basic Shape Style: NONTUBULAR ROUND
  • Minor Bushing Diameter: 0.073 INCHES IN
Applications
  • Applications requiring Copper Alloy Overall Except Insulation construction
General Description

The Terminal,feedthru, cataloged under National Stock Number 5940-00-544-6146, is classified within Federal Supply Class 5940 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect. Government technical data includes 19 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
NSN5940-00-544-6146
Primary Part Number2509A
Item NameTerminal,feedthru
FSC / FSG5940 / 59 — No Item Name Available
ManufacturerWinchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
StatusACTIVE
Turret Minor Diameter0.038 INCHES SINGLE END IN
Major Bushing Diameter0.094 INCHES IN
Surface TreatmentSILVER OVERALL EXCEPT INSULATION SINGLE LAYER
First End Terminal Length0.169 INCHES IN
Material Document and ClassificationQQ-B-626,COM+22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSULATION
Basic Shape StyleNONTUBULAR ROUND
Minor Bushing Diameter0.073 INCHES IN
Minor Bushing Length0.053 INCHES IN
Precious MaterialSILVER
Precious Material and LocationOVERALL EXCEPT INSULATION SILVER
Electrical Insulation FeatureUNINSULATED
Second End Terminal Length0.164 INCHES IN
Largest Diameter0.050 INCHES SINGLE END IN
Major Bushing Length0.022 INCHES IN
MaterialCOPPER ALLOY OVERALL EXCEPT INSULATION
Surface Treatment Document and ClassificationQQ-S-365,TY 2,GR B FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSULATION SINGLE LAYER
Overall Diameter0.094 INCHES0.094 INCHES IN
Conductor Accommodation TypeDOUBLE TURRET ALL ENDS
Mounting Method StylePRESS FIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3455-00-455-5427 INTERCHANGEABLE
File,rotary
Cross-Reference Index
Part NumberManufacturer
2509A PRIMARY Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect (USA)
29P219278 Herley Chicago Dba Stewart Warner Electronics (USA)
Related Parts
3455-00-455-5427INTERCHANGEABLE
FILE,ROTARY

Frequently Asked Questions

What is NSN 5940-00-544-6146?

NSN 5940-00-544-6146 is a Terminal,feedthru, manufactured by Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect, classified under FSC 5940 (No Item Name Available). Status: active.

What are the part numbers for NSN 5940-00-544-6146?

NSN 5940-00-544-6146 has 2 cross-referenced part numbers: 2509A (Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect), 29P219278 (Herley Chicago Dba Stewart Warner Electronics).

What NSN replaces 5940-00-544-6146?

There is 1 known substitute for 5940-00-544-6146: 3455-00-455-5427. Verify interchangeability with system specifications before substitution.

What are the specifications of 2509A?

Key specifications for 2509A: Turret Minor Diameter: 0.038 INCHES SINGLE END IN; Major Bushing Diameter: 0.094 INCHES IN; Surface Treatment: SILVER OVERALL EXCEPT INSULATION SINGLE LAYER; First End Terminal Length: 0.169 INCHES IN. 20 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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