PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68121Terminal Junction Block,sectiona

Mersen Canada Toronto Inc · NSN 5940-01-408-3987 · FSC 5940 · No Item Name Available
Verified by PartsTable
NSN 5940-01-408-3987 — this item is cataloged by the U.S. Government under National Stock Number 5940-01-408-3987. Primary manufacturer part number: 68121.
Features
  • Terminal Junction Block,sectiona — FSC 5940
  • Wire Size Accommodated: 6.000 AWG NOMINAL
  • Block Type: REGULAR
  • Pole Quantity: 2
  • 2 verified cross-references
  • Primary manufacturer: Mersen Canada Toronto Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Terminal Junction Block,sectiona, cataloged under National Stock Number 5940-01-408-3987, 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 Mersen Canada Toronto Inc. Government technical data includes 3 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5940-01-408-3987
Primary Part Number68121
Item NameTerminal Junction Block,sectiona
FSC / FSG5940 / 59 — No Item Name Available
ManufacturerMersen Canada Toronto Inc
StatusACTIVE
Wire Size Accommodated6.000 AWG NOMINAL
Block TypeREGULAR
Pole Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-456-8441 INTERCHANGEABLE
Transformer,power
1660-00-593-51756812-1 INTERCHANGEABLE
Screen,regulator in
Avox Systems Inc Dba Avox Systems Inc
5340-00-807-240768121 INTERCHANGEABLE
Strap,retaining
Cummins Inc.
6515-01-350-3568681.21 INTERCHANGEABLE
Knife,eye
Grieshaber and Co Inc
3040-01-366-73136812-1 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
5998-01-494-4452 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
68121 PRIMARY Mersen Canada Toronto Inc (CAN)
MPSR02454 Chand, L.l.c. (USA)
Related Parts
5950-00-456-8441INTERCHANGEABLE
TRANSFORMER,POWER
1660-00-593-5175INTERCHANGEABLE
SCREEN,REGULATOR IN
6812-1
5340-00-807-2407INTERCHANGEABLE
STRAP,RETAINING
68121
6515-01-350-3568INTERCHANGEABLE
KNIFE,EYE
681.21
3040-01-366-7313INTERCHANGEABLE
CONNECTING LINK,RIGID
6812-1
5998-01-494-4452INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 5940-01-408-3987?

NSN 5940-01-408-3987 is a Terminal Junction Block,sectiona, manufactured by Mersen Canada Toronto Inc, classified under FSC 5940 (No Item Name Available). Status: active.

What are the part numbers for NSN 5940-01-408-3987?

NSN 5940-01-408-3987 has 2 cross-referenced part numbers: 68121 (Mersen Canada Toronto Inc), MPSR02454 (Chand, L.l.c.).

What NSN replaces 5940-01-408-3987?

There are 6 known substitutes for 5940-01-408-3987: 5950-00-456-8441, 1660-00-593-5175, 5340-00-807-2407 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 68121?

Key specifications for 68121: Wire Size Accommodated: 6.000 AWG NOMINAL; Block Type: REGULAR; Pole Quantity: 2. 3 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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