PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

389906ITEM7Insulator,washer

Naval Ship Systems Command · NSN 5970-00-280-8911 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-280-8911 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-280-8911. Primary manufacturer part number: 389906ITEM7.
Features
  • Insulator,washer — FSC 5970
  • Inside Diameter: 5.625 INCHES NOMINAL IN
  • Style Designator: ROUND, FLAT
  • Material: MICA OVERALL
  • Outside Diameter: 12.250 INCHES NOMINAL IN
  • 5 verified cross-references
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Mica Overall construction
General Description

The Insulator,washer, cataloged under National Stock Number 5970-00-280-8911, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-280-8911
Primary Part Number389906ITEM7
Item NameInsulator,washer
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Inside Diameter5.625 INCHES NOMINAL IN
Style DesignatorROUND, FLAT
MaterialMICA OVERALL
Outside Diameter12.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2920-00-422-6879 INTERCHANGEABLE
Winding,motor Field
1240-00-499-4247 INTERCHANGEABLE
Window,optical Instrument
1650-00-787-0947 INTERCHANGEABLE
Plug,valve
3510-00-868-903616819 INTERCHANGEABLE
Bearing Assembly
Clayton Manufacturing Company
5342-01-013-6044 INTERCHANGEABLE
Bracket,permuter
6685-01-147-852416-819 INTERCHANGEABLE
Gage,pressure,dial Indicating
Hess Manufacturing Inc Div Blast-It-All
3120-01-156-568716819 INTERCHANGEABLE
Bearing,sleeve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4730-01-173-412816819 INTERCHANGEABLE
Tee,pipe to Tube
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
Cross-Reference Index
Part NumberManufacturer
389906ITEM7 PRIMARY Naval Ship Systems Command (USA)
3399ITEM7 Eaton Corp Opns & Technical Center (USA)
16-819 PRIMARY Eaton Corp Opns & Technical Center (USA)
533853PCSP1G Naval Ship Systems Command (USA)
5203ALT1PCSP1G Eaton Corp Opns & Technical Center (USA)
Related Parts
2920-00-422-6879INTERCHANGEABLE
WINDING,MOTOR FIELD
1240-00-499-4247INTERCHANGEABLE
WINDOW,OPTICAL INSTRUMENT
1650-00-787-0947INTERCHANGEABLE
PLUG,VALVE
3510-00-868-9036INTERCHANGEABLE
BEARING ASSEMBLY
16819
5342-01-013-6044INTERCHANGEABLE
BRACKET,PERMUTER
6685-01-147-8524INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
16-819
3120-01-156-5687INTERCHANGEABLE
BEARING,SLEEVE
16819
4730-01-173-4128INTERCHANGEABLE
TEE,PIPE TO TUBE
16819

Frequently Asked Questions

What is NSN 5970-00-280-8911?

NSN 5970-00-280-8911 is a Insulator,washer, manufactured by Naval Ship Systems Command, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-280-8911?

NSN 5970-00-280-8911 has 5 cross-referenced part numbers: 389906ITEM7 (Naval Ship Systems Command), 3399ITEM7 (Eaton Corp Opns & Technical Center), 16-819 (Eaton Corp Opns & Technical Center), 533853PCSP1G (Naval Ship Systems Command), 5203ALT1PCSP1G (Eaton Corp Opns & Technical Center).

What NSN replaces 5970-00-280-8911?

There are 8 known substitutes for 5970-00-280-8911: 2920-00-422-6879, 1240-00-499-4247, 1650-00-787-0947 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 389906ITEM7?

Key specifications for 389906ITEM7: Inside Diameter: 5.625 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Material: MICA OVERALL; Outside Diameter: 12.250 INCHES NOMINAL IN. 5 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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