PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L1-71-5-3Terminal,feedthru

Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries · NSN 5940-00-878-8440 · FSC 5940 · No Item Name Available
Verified by PartsTable
NSN 5940-00-878-8440 — this item is cataloged by the U.S. Government under National Stock Number 5940-00-878-8440. Primary manufacturer part number: L1-71-5-3.
Features
  • Terminal,feedthru — FSC 5940
  • Material Document and Classification: MIL-M-14 MIL SPEC SINGLE MATERIAL RESPONSE INSULATION
  • Major Bushing Diameter: 0.233 INCHES IN
  • Turret Minor Diameter: 0.050 INCHES ALL ENDS IN
  • Precious Material and Location: EXTERNAL SURFACES EXCEPT INSULATION SILVER
  • Material: COPPER ALLOY OVERALL EXCEPT INSULATION
  • Major Bushing Length: 0.035 INCHES IN
  • Mounting Method Style: PRESS FIT
Applications
  • Applications requiring Copper Alloy Overall Except Insulation construction
General Description

The Terminal,feedthru, cataloged under National Stock Number 5940-00-878-8440, 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 Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN5940-00-878-8440
Primary Part NumberL1-71-5-3
Item NameTerminal,feedthru
FSC / FSG5940 / 59 — No Item Name Available
ManufacturerRockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries
StatusACTIVE
Material Document and ClassificationMIL-M-14 MIL SPEC SINGLE MATERIAL RESPONSE INSULATION
Major Bushing Diameter0.233 INCHES IN
Turret Minor Diameter0.050 INCHES ALL ENDS IN
Precious Material and LocationEXTERNAL SURFACES EXCEPT INSULATION SILVER
MaterialCOPPER ALLOY OVERALL EXCEPT INSULATION
Major Bushing Length0.035 INCHES IN
Mounting Method StylePRESS FIT
Precious MaterialSILVER
MaterialPLASTIC DIALLYL PHTHALATE INSULATION
Electrical Insulation FeatureINSULATING SLEEVE
Conductor Accommodation TypeDOUBLE TURRET ALL ENDS
Minor Bushing Diameter0.196 INCHES IN
Minor Bushing Length0.165 INCHES IN
Basic Shape StyleNONTUBULAR ROUND
Material Document and ClassificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSULATION
First End Terminal Length0.226 INCHES IN
Largest Diameter0.078 INCHES ALL ENDS IN
Precious Material and Weight0.040 SILVER GRAINS, TROY
Identification Code ColorWHITE
Second End Terminal Length0.224 INCHES IN
Surface TreatmentSILVER OVERALL EXCEPT INSULATION SINGLE LAYER
Overall Diameter0.233 INCHES0.233 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6240-00-542-6571 INTERCHANGEABLE
Lamp,incandescent
Cross-Reference Index
Part NumberManufacturer
PRG-235-5-FG10-FC3 Schroff Inc (USA)
L1-71-5-3 PRIMARY Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries (USA)
L1-54-5 Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries (USA)
PRG-235-5-FG10-FC3 Precise of California Div of Adjustable Bushing Corp (USA)
978326-5 Raytheon Company Dba Raytheon (USA)
Related Parts
6240-00-542-6571INTERCHANGEABLE
LAMP,INCANDESCENT

Frequently Asked Questions

What is NSN 5940-00-878-8440?

NSN 5940-00-878-8440 is a Terminal,feedthru, manufactured by Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries, classified under FSC 5940 (No Item Name Available). Status: active.

What are the part numbers for NSN 5940-00-878-8440?

NSN 5940-00-878-8440 has 5 cross-referenced part numbers: PRG-235-5-FG10-FC3 (Schroff Inc), L1-71-5-3 (Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries), L1-54-5 (Rockwell Aviation Services, Inc. Dba Mercury Industries Div Mercury Industries), PRG-235-5-FG10-FC3 (Precise of California Div of Adjustable Bushing Corp), 978326-5 (Raytheon Company Dba Raytheon).

What NSN replaces 5940-00-878-8440?

There is 1 known substitute for 5940-00-878-8440: 6240-00-542-6571. Verify interchangeability with system specifications before substitution.

What are the specifications of L1-71-5-3?

Key specifications for L1-71-5-3: Material Document and Classification: MIL-M-14 MIL SPEC SINGLE MATERIAL RESPONSE INSULATION; Major Bushing Diameter: 0.233 INCHES IN; Turret Minor Diameter: 0.050 INCHES ALL ENDS IN; Precious Material and Location: EXTERNAL SURFACES EXCEPT INSULATION SILVER. 24 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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