PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550-10PLIndicator,sight,liquid

Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg. · NSN 6680-01-136-1476 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-136-1476 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-136-1476. Primary manufacturer part number: 550-10PL.
Features
  • Indicator,sight,liquid — FSC 6680
  • Nominal Thread Size: UNABLE TO DECODE
  • Thread Series Designator: UNABLE TO DECODE
  • Material: ALUMINUM ALLOY
  • Material Document and Classification: 550 FSCM 99381 MFR REF SINGLE MATERIAL RESPONSE
  • Furnished Data: LIQUID LEVEL
  • Media for Which Designed: ANY ACCEPTABLE
  • Surface Treatment Document and Classification: 550-FSCM 99381 MFR REF SINGLE TREATMENT RESPONSE
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-136-1476, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-01-136-1476
Primary Part Number550-10PL
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerTobeyco Mfg, Co, Inc. Div Federal Brass Mfg.
StatusCANCELLED
Nominal Thread SizeUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
MaterialALUMINUM ALLOY
Material Document and Classification550 FSCM 99381 MFR REF SINGLE MATERIAL RESPONSE
Furnished DataLIQUID LEVEL
Media for Which DesignedANY ACCEPTABLE
Surface Treatment Document and Classification550-FSCM 99381 MFR REF SINGLE TREATMENT RESPONSE
Surface TreatmentANODIZE
Style DesignatorDOUBLE-MOUNT, SHIELDED, FRONT OPENING
Data Furnishing MethodINSCRIBED HIGH-LOW
End Connection TypeUNABLE TO DECODE
Thread DirectionUNABLE TO DECODE
Thread ClassUNABLE TO DECODE
Sight Height8.000 INCHES NOMINAL IN
Maximum Temp Rating150.0 FAHRENHEIT DEGF
Distance Between Mounting Facility Centers10.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-052-41982270800-3 INTERCHANGEABLE
Coil,radio Frequency
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3110-00-100-6151MS19059-2414 INTERCHANGEABLE
Ball,bearing
American Society for Testing and Materials Dba Astm International
5330-00-154-8353 INTERCHANGEABLE
Seal,plain Encased
5820-00-161-5361SC-D-23997-24 INTERCHANGEABLE
Dial
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5815-00-324-9265 INTERCHANGEABLE
Teletypewriter Subassembly
1730-00-358-927855010 INTERCHANGEABLE
Block,valve,pump
Malabar
5305-00-448-145955010 INTERCHANGEABLE
Screw,machine
Lucent Technologies Inc Corporate Headquarters
5133-00-838-5245 INTERCHANGEABLE
Drill,twist
5915-00-891-3291526-7727-010 INTERCHANGEABLE
Filter,band Pass-Low Pass
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
2040-01-047-212755010 INTERCHANGEABLE
Box Assembly,indica
L3 Technologies, Inc. Div L3 Keo
Cross-Reference Index
Part NumberManufacturer
550-10 Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg. (USA)
550-10PL PRIMARY Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg. (USA)
550 Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg. (USA)
Related Parts
5950-00-052-4198INTERCHANGEABLE
COIL,RADIO FREQUENCY
2270800-3
3110-00-100-6151INTERCHANGEABLE
BALL,BEARING
MS19059-2414
5330-00-154-8353INTERCHANGEABLE
SEAL,PLAIN ENCASED
5820-00-161-5361INTERCHANGEABLE
DIAL
SC-D-23997-24
5815-00-324-9265INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
1730-00-358-9278INTERCHANGEABLE
BLOCK,VALVE,PUMP
55010
5305-00-448-1459INTERCHANGEABLE
SCREW,MACHINE
55010
5133-00-838-5245INTERCHANGEABLE
DRILL,TWIST
5915-00-891-3291INTERCHANGEABLE
FILTER,BAND PASS-LOW PASS
526-7727-010
2040-01-047-2127INTERCHANGEABLE
BOX ASSEMBLY,INDICA
55010
4720-01-565-9907INTERCHANGEABLE
HOSE ASSEMBLY SET,NONMETALLIC
55010
1005-01-584-9049INTERCHANGEABLE
CHUTE ASSEMBLY,AMMUNITION
55010

Frequently Asked Questions

What is NSN 6680-01-136-1476?

NSN 6680-01-136-1476 is a Indicator,sight,liquid, manufactured by Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg., classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-01-136-1476?

NSN 6680-01-136-1476 has 3 cross-referenced part numbers: 550-10 (Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.), 550-10PL (Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.), 550 (Tobeyco Mfg, Co, Inc. Div Federal Brass Mfg.).

What NSN replaces 6680-01-136-1476?

There are 12 known substitutes for 6680-01-136-1476: 5950-00-052-4198, 3110-00-100-6151, 5330-00-154-8353 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 550-10PL?

Key specifications for 550-10PL: Nominal Thread Size: UNABLE TO DECODE; Thread Series Designator: UNABLE TO DECODE; Material: ALUMINUM ALLOY; Material Document and Classification: 550 FSCM 99381 MFR REF SINGLE MATERIAL RESPONSE. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-01-136-1476 still in active supply?

NSN 6680-01-136-1476 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.
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