PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D-21Terminal,lug

Southport Industries, Inc. · NSN 5940-00-939-5630 · FSC 5940 · No Item Name Available
Verified by PartsTable
NSN 5940-00-939-5630 — this item is cataloged by the U.S. Government under National Stock Number 5940-00-939-5630. Primary manufacturer part number: D-21.
Features
  • Terminal,lug — FSC 5940
  • Largest Diameter: 0.040 INCHES SINGLE END IN
  • Distance From Mounting Hole Center to Mounting End: 0.437 INCHES IN
  • Electrical Insulation Feature: UNINSULATED
  • Mounting Method Style: STRAIGHT ONE HOLE
  • Material: COPPER OVERALL
  • Mounting Hole Diameter: 0.453 INCHES IN
  • Basic Shape Style: MECHANICAL COMPRESSION
Applications
  • Applications requiring Copper Overall construction
General Description

The Terminal,lug, cataloged under National Stock Number 5940-00-939-5630, 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 Southport Industries, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5940-00-939-5630
Primary Part NumberD-21
Item NameTerminal,lug
FSC / FSG5940 / 59 — No Item Name Available
ManufacturerSouthport Industries, Inc.
StatusACTIVE
Largest Diameter0.040 INCHES SINGLE END IN
Distance From Mounting Hole Center to Mounting End0.437 INCHES IN
Electrical Insulation FeatureUNINSULATED
Mounting Method StyleSTRAIGHT ONE HOLE
MaterialCOPPER OVERALL
Mounting Hole Diameter0.453 INCHES IN
Basic Shape StyleMECHANICAL COMPRESSION
Conductor Accommodation TypeBARREL SETSCREW W/SLOT SINGLE END
Mounting Facility Thickness0.187 INCHES IN
Maximum Conductor Size Accommodated0000 AWG
Mounting Tongue Width1.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3455-00-009-0214 INTERCHANGEABLE
File,rotary
3110-00-100-8536D21 INTERCHANGEABLE
Bearing,ball,thrust
Schaeffler Group Usa Inc
3110-00-109-1179 INTERCHANGEABLE
Bearing,ball,annular
5950-00-314-354611T1830LPC35 INTERCHANGEABLE
Transformer,audio Frequency
Naval Ship Systems Command
2920-00-540-7539377 INTERCHANGEABLE
Spark Plug
Allied-Signal Inc Autolite Div
5935-01-005-3579 INTERCHANGEABLE
Connector,plug,electrical
2920-01-365-89601116435 INTERCHANGEABLE
Regulator,engine Generator
Delco Remy America Inc
Cross-Reference Index
Part NumberManufacturer
D-21 PRIMARY Southport Industries, Inc. (USA)
KA28 Souriau Usa, Inc. Dba Souriau Usa Inc (USA)
KA28 PRIMARY Burndy Llc (USA)
Related Parts
3455-00-009-0214INTERCHANGEABLE
FILE,ROTARY
3110-00-100-8536INTERCHANGEABLE
BEARING,BALL,THRUST
D21
3110-00-109-1179INTERCHANGEABLE
BEARING,BALL,ANNULAR
5950-00-314-3546INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
11T1830LPC35
2920-00-540-7539INTERCHANGEABLE
SPARK PLUG
377
5935-01-005-3579INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2920-01-365-8960INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
1116435

Frequently Asked Questions

What is NSN 5940-00-939-5630?

NSN 5940-00-939-5630 is a Terminal,lug, manufactured by Southport Industries, Inc., classified under FSC 5940 (No Item Name Available). Status: active.

What are the part numbers for NSN 5940-00-939-5630?

NSN 5940-00-939-5630 has 3 cross-referenced part numbers: D-21 (Southport Industries, Inc.), KA28 (Souriau Usa, Inc. Dba Souriau Usa Inc), KA28 (Burndy Llc).

What NSN replaces 5940-00-939-5630?

There are 7 known substitutes for 5940-00-939-5630: 3455-00-009-0214, 3110-00-100-8536, 3110-00-109-1179 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D-21?

Key specifications for D-21: Largest Diameter: 0.040 INCHES SINGLE END IN; Distance From Mounting Hole Center to Mounting End: 0.437 INCHES IN; Electrical Insulation Feature: UNINSULATED; Mounting Method Style: STRAIGHT ONE HOLE. 13 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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