PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-055Contact Assembly,electrical

Automatic Switch Company Dba Asco · NSN 5999-01-178-4116 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-178-4116 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-178-4116. Primary manufacturer part number: 40-055.
Features
  • Contact Assembly,electrical — FSC 5999
  • Terminal Type: BUS BAR
  • Contact Quantity: 3
  • Contact Item Name Assigned by Government Agency: CONTACT ASSY
  • Structural Design: NONSWITCHING
  • Government Agency Controlling Contact: USN
  • Contact Identifying Number Assigned by Government Agency: 40-055
  • Terminal Quantity: 3
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Contact Assembly,electrical, cataloged under National Stock Number 5999-01-178-4116, 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 Automatic Switch Company Dba Asco. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-178-4116
Primary Part Number40-055
Item NameContact Assembly,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerAutomatic Switch Company Dba Asco
StatusACTIVE
Terminal TypeBUS BAR
Contact Quantity3
Contact Item Name Assigned by Government AgencyCONTACT ASSY
Structural DesignNONSWITCHING
Government Agency Controlling ContactUSN
Contact Identifying Number Assigned by Government Agency40-055
Terminal Quantity3
Terminal TypeBUS BAR
Contact Quantity3
Contact Item Name Assigned by Government AgencyCONTACT ASSY
Structural DesignNONSWITCHING
Government Agency Controlling ContactUSN
Contact Identifying Number Assigned by Government Agency40-055
Terminal Quantity3
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight2.4400 lbs
Cube0.2461 cu ft
Verified Substitutes 10
1670-00-406-2654 INTERCHANGEABLE
Hook,load Limiter
6105-00-411-622640055 INTERCHANGEABLE
Motor,alternating Current
Crown Audio, Inc. Dba Crown International
3020-01-181-202540055 INTERCHANGEABLE
Gear,helical
Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co
5330-01-186-20059212M41P01 INTERCHANGEABLE
Seal,nozzle
General Electric Company
5935-01-308-74674005-5 INTERCHANGEABLE
Jack,tip
Fluke Electronics Corp
6550-01-317-8706R40055 INTERCHANGEABLE
Gram Stain Decolorizer Solution
Remel Inc.
6850-01-467-135240055 INTERCHANGEABLE
Cleaning Compound,solvent
Product Services Co
8465-01-541-797640055 INTERCHANGEABLE
Hydration System
Camelbak Products, Llc Dba Camelbak
4820-01-642-049240055 INTERCHANGEABLE
Valve,safety Relief
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5315-01-674-934240055 INTERCHANGEABLE
Pin,straight,headless
Fastenal Company Div Oshk
Cross-Reference Index
Part NumberManufacturer
40-055 Automatic Switch Company Dba Asco (USA)
Related Parts
1670-00-406-2654INTERCHANGEABLE
HOOK,LOAD LIMITER
6105-00-411-6226INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
40055
3020-01-181-2025INTERCHANGEABLE
GEAR,HELICAL
40055
5330-01-186-2005INTERCHANGEABLE
SEAL,NOZZLE
9212M41P01
5935-01-308-7467INTERCHANGEABLE
JACK,TIP
4005-5
6550-01-317-8706INTERCHANGEABLE
GRAM STAIN DECOLORIZER SOLUTION
R40055
6850-01-467-1352INTERCHANGEABLE
CLEANING COMPOUND,SOLVENT
40055
8465-01-541-7976INTERCHANGEABLE
HYDRATION SYSTEM
40055
4820-01-642-0492INTERCHANGEABLE
VALVE,SAFETY RELIEF
40055
5315-01-674-9342INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
40055

Frequently Asked Questions

What is NSN 5999-01-178-4116?

NSN 5999-01-178-4116 is a Contact Assembly,electrical, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-178-4116?

NSN 5999-01-178-4116 has 1 cross-referenced part number: 40-055 (Automatic Switch Company Dba Asco).

What NSN replaces 5999-01-178-4116?

There are 10 known substitutes for 5999-01-178-4116: 1670-00-406-2654, 6105-00-411-6226, 3020-01-181-2025 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-055?

Key specifications for 40-055: Terminal Type: BUS BAR; Contact Quantity: 3; Contact Item Name Assigned by Government Agency: CONTACT ASSY; Structural Design: NONSWITCHING. 14 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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