PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

48121Insulator,bushing

Valley Power Systems, Inc. · NSN 5970-00-669-9544 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-669-9544 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-669-9544. Primary manufacturer part number: 48121.
Features
  • Insulator,bushing — FSC 5970
  • Inside Diameter: 0.506 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Material Document and Classification: MIL-P-79, TYPE PBG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: PLASTIC PHENOLIC AND PAPER OVERALL
  • End Configuration: BOTH ENDS SQUARED
  • Outside Diameter: 0.689 INCHES NOMINAL IN
  • 4 verified cross-references
Applications
  • Applications requiring Plastic Phenolic and Paper Overall construction
General Description

The Insulator,bushing, cataloged under National Stock Number 5970-00-669-9544, 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 Valley Power Systems, Inc.. Government technical data includes 6 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-669-9544
Primary Part Number48121
Item NameInsulator,bushing
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerValley Power Systems, Inc.
StatusCANCELLED
Inside Diameter0.506 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Material Document and ClassificationMIL-P-79, TYPE PBG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialPLASTIC PHENOLIC AND PAPER OVERALL
End ConfigurationBOTH ENDS SQUARED
Outside Diameter0.689 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2940-00-382-8003L21 INTERCHANGEABLE
Line
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5999-00-418-937448121 INTERCHANGEABLE
Contact,electrical
Anderson C J and Co
5935-00-950-11834812-1 INTERCHANGEABLE
Connector,receptacle,electrical
Microwave Devices Inc
1680-01-525-34385382040 INTERCHANGEABLE
Panel,armor,aircraft
Point Blank Enterprises, Inc. Dba the Protective Group Div the Protective Group, a Point Blank Company
Cross-Reference Index
Part NumberManufacturer
48121 Valley Power Systems, Inc. (USA)
5382040 General Motors Corp Delco Products Div Machine Control Systems (USA)
5382040 General Motors Corp (USA)
5382040 Rolls-Royce Solutions America Inc (USA)
Related Parts
2940-00-382-8003INTERCHANGEABLE
LINE
L21
5999-00-418-9374INTERCHANGEABLE
CONTACT,ELECTRICAL
48121
5935-00-950-1183INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
4812-1
1680-01-525-3438INTERCHANGEABLE
PANEL,ARMOR,AIRCRAFT
5382040

Frequently Asked Questions

What is NSN 5970-00-669-9544?

NSN 5970-00-669-9544 is a Insulator,bushing, manufactured by Valley Power Systems, Inc., classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-669-9544?

NSN 5970-00-669-9544 has 4 cross-referenced part numbers: 48121 (Valley Power Systems, Inc.), 5382040 (General Motors Corp Delco Products Div Machine Control Systems), 5382040 (General Motors Corp), 5382040 (Rolls-Royce Solutions America Inc).

What NSN replaces 5970-00-669-9544?

There are 4 known substitutes for 5970-00-669-9544: 2940-00-382-8003, 5999-00-418-9374, 5935-00-950-1183 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 48121?

Key specifications for 48121: Inside Diameter: 0.506 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Material Document and Classification: MIL-P-79, TYPE PBG MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: PLASTIC PHENOLIC AND PAPER OVERALL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-669-9544 still in active supply?

NSN 5970-00-669-9544 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com