PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

138C663H01Clamp,electrical

Northrop Grumman Support Services Corp · NSN 5999-01-086-8403 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-086-8403 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-086-8403. Primary manufacturer part number: 138C663H01.
Features
  • Clamp,electrical — FSC 5999
  • Style Designator: GROOVE
  • Material Document and Classification: MIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE BODY
  • Material: ALUMINUM ALLOY BODY
  • Conductor Accommodation Quantity: 2
  • Mounting Device Quantity: 2
  • Accommodation Hole Width: 0.258 INCHES MAXIMUM IN
  • Mounting Method: BOLT
Applications
  • Applications requiring Aluminum Alloy Body construction
General Description

The Clamp,electrical, cataloged under National Stock Number 5999-01-086-8403, 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 Northrop Grumman Support Services Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-086-8403
Primary Part Number138C663H01
Item NameClamp,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Style DesignatorGROOVE
Material Document and ClassificationMIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MaterialALUMINUM ALLOY BODY
Conductor Accommodation Quantity2
Mounting Device Quantity2
Accommodation Hole Width0.258 INCHES MAXIMUM IN
Mounting MethodBOLT
Style DesignatorGROOVE
Material Document and ClassificationMIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MaterialALUMINUM ALLOY BODY
Conductor Accommodation Quantity2
Mounting Device Quantity2
Accommodation Hole Width0.258 INCHES MAXIMUM IN
Mounting MethodBOLT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Weight0.2500 lbs
Cube0.0061 cu ft
Verified Substitutes 3
5905-00-058-09760N002232 INTERCHANGEABLE
Resistor,voltage Sensitive
National Security Agency
5935-01-052-922050-476 INTERCHANGEABLE
Connector,plug,electrical
Dit-Mco International Llc
4320-01-139-2631A707 INTERCHANGEABLE
Impeller,pump,centrifugal
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
138C663H01 PRIMARY Northrop Grumman Support Services Corp (USA)
138C663H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
A707 Thompson Lightning Protection Inc (USA)
Related Parts
5905-00-058-0976INTERCHANGEABLE
RESISTOR,VOLTAGE SENSITIVE
0N002232
5935-01-052-9220INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
50-476
4320-01-139-2631INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
A707

Frequently Asked Questions

What is NSN 5999-01-086-8403?

NSN 5999-01-086-8403 is a Clamp,electrical, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-086-8403?

NSN 5999-01-086-8403 has 3 cross-referenced part numbers: 138C663H01 (Northrop Grumman Support Services Corp), 138C663H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), A707 (Thompson Lightning Protection Inc).

What NSN replaces 5999-01-086-8403?

There are 3 known substitutes for 5999-01-086-8403: 5905-00-058-0976, 5935-01-052-9220, 4320-01-139-2631. Verify interchangeability with system specifications before substitution.

What are the specifications of 138C663H01?

Key specifications for 138C663H01: Overall Height: 1.218 INCHES NOMINAL IN; Style Designator: GROOVE; Material Document and Classification: MIL-A-21180 MIL SPEC SINGLE MATERIAL RESPONSE BODY; Material: ALUMINUM ALLOY BODY. 20 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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