PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4995378-9Ring,electrical Contact

Kalmar AC Inc · NSN 5977-00-415-1404 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-415-1404 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-415-1404. Primary manufacturer part number: 4995378-9.
Features
  • Ring,electrical Contact — FSC 5977
  • Material: COPPER ALLOY
  • Outside Diameter: 1.080 INCHES NOMINAL IN
  • Inside Diameter: 0.950 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Kalmar AC Inc
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,electrical Contact, cataloged under National Stock Number 5977-00-415-1404, is classified within Federal Supply Class 5977 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Kalmar AC Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-00-415-1404
Primary Part Number4995378-9
Item NameRing,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerKalmar AC Inc
StatusACTIVE
MaterialCOPPER ALLOY
Outside Diameter1.080 INCHES NOMINAL IN
Inside Diameter0.950 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-034-386821149 INTERCHANGEABLE
Gasket
Industrial Technologies and Services Llc
5920-00-284-7734159-0043-00 INTERCHANGEABLE
Fuse,cartridge
Tektronix, Inc.
5325-01-067-3314 INTERCHANGEABLE
Ring,retaining
6150-01-098-507521149 INTERCHANGEABLE
Bus,conductor
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
2590-01-308-414221149 INTERCHANGEABLE
Housing,hydraulic,gear Pump-Moto
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
6-74995378 Brighton Cromwell Llc (USA)
4995378-9 PRIMARY Kalmar AC Inc (USA)
21149 PRIMARY Eaton Corporation Div Eaton Fluid Power (USA)
6-74995378 Ar Bee Corp (USA)
Related Parts
5330-00-034-3868INTERCHANGEABLE
GASKET
21149
5920-00-284-7734INTERCHANGEABLE
FUSE,CARTRIDGE
159-0043-00
5325-01-067-3314INTERCHANGEABLE
RING,RETAINING
6150-01-098-5075INTERCHANGEABLE
BUS,CONDUCTOR
21149
2590-01-308-4142INTERCHANGEABLE
HOUSING,HYDRAULIC,GEAR PUMP-MOTO
21149

Frequently Asked Questions

What is NSN 5977-00-415-1404?

NSN 5977-00-415-1404 is a Ring,electrical Contact, manufactured by Kalmar AC Inc, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-415-1404?

NSN 5977-00-415-1404 has 4 cross-referenced part numbers: 6-74995378 (Brighton Cromwell Llc), 4995378-9 (Kalmar AC Inc), 21149 (Eaton Corporation Div Eaton Fluid Power), 6-74995378 (Ar Bee Corp).

What NSN replaces 5977-00-415-1404?

There are 5 known substitutes for 5977-00-415-1404: 5330-00-034-3868, 5920-00-284-7734, 5325-01-067-3314 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4995378-9?

Key specifications for 4995378-9: Material: COPPER ALLOY; End Item Identification: 3930-00-489-0263; Outside Diameter: 1.080 INCHES NOMINAL IN; Inside Diameter: 0.950 INCHES NOMINAL IN. 4 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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