PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J-8550Inserter,seal

Bosch Automotive Service Solutions Inc. · NSN 5120-00-977-5579 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-977-5579 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-977-5579. Primary manufacturer part number: J-8550.
Features
  • Inserter,seal — FSC 5120
  • Usage Design: USED TO INSTALL THERMOSTAT HOUSING SEAL
  • 4 verified cross-references
  • Primary manufacturer: Bosch Automotive Service Solutions Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Inserter,seal, cataloged under National Stock Number 5120-00-977-5579, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Bosch Automotive Service Solutions Inc.. Government technical data includes 1 verified specification, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-977-5579
Primary Part NumberJ-8550
Item NameInserter,seal
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerBosch Automotive Service Solutions Inc.
StatusACTIVE
Usage DesignUSED TO INSTALL THERMOSTAT HOUSING SEAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-285-7420871 INTERCHANGEABLE
Washer,flat
Itt Jabsco Products
2530-00-383-506007779AB INTERCHANGEABLE
Steering Wheel
Cnh Industrial America Llc Dba Cnh America
6515-00-384-6950TRM26393 INTERCHANGEABLE
Cannula,bronchial
Boehm Surgical Instrument Corp
3950-00-389-7921 INTERCHANGEABLE
Windlass
6210-00-538-0744 INTERCHANGEABLE
Diffuser,light
6145-00-581-1616HP3-EXBHB1 INTERCHANGEABLE
Wire,electrical
National Electrical Mfrs Assn Dba Nema
3439-00-981-1101TC-871 INTERCHANGEABLE
Control,soldering Iron
Hexacon Electric Company
5940-01-106-3259ST110 INTERCHANGEABLE
Terminal,quick Disconnect
Standard Motor Products
6625-01-126-3133871 INTERCHANGEABLE
Counter,electronic,digital Reado
Advanced Measurement Technology Inc
4910-01-257-4883871 INTERCHANGEABLE
Analyzer,engine
Merc-O-Tronic Instruments Corporation
Cross-Reference Index
Part NumberManufacturer
J-8550 PRIMARY Bosch Automotive Service Solutions Inc. (USA)
2KM1 Oshkosh Defense Llc (USA)
871 L-K Tool and Mfg Inc Div of W and D Machinery Co (USA)
2KM1 Oshkosh Corp (USA)
Related Parts
5310-00-285-7420INTERCHANGEABLE
WASHER,FLAT
871
2530-00-383-5060INTERCHANGEABLE
STEERING WHEEL
07779AB
6515-00-384-6950INTERCHANGEABLE
CANNULA,BRONCHIAL
TRM26393
3950-00-389-7921INTERCHANGEABLE
WINDLASS
6210-00-538-0744INTERCHANGEABLE
DIFFUSER,LIGHT
6145-00-581-1616INTERCHANGEABLE
WIRE,ELECTRICAL
HP3-EXBHB1
3439-00-981-1101INTERCHANGEABLE
CONTROL,SOLDERING IRON
TC-871
5940-01-106-3259INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
ST110
6625-01-126-3133INTERCHANGEABLE
COUNTER,ELECTRONIC,DIGITAL READO
871
4910-01-257-4883INTERCHANGEABLE
ANALYZER,ENGINE
871
9390-01-288-2748INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
871
5930-01-337-5418INTERCHANGEABLE
SWITCH SECTION,ROTARY
871

Frequently Asked Questions

What is NSN 5120-00-977-5579?

NSN 5120-00-977-5579 is a Inserter,seal, manufactured by Bosch Automotive Service Solutions Inc., classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-977-5579?

NSN 5120-00-977-5579 has 4 cross-referenced part numbers: J-8550 (Bosch Automotive Service Solutions Inc.), 2KM1 (Oshkosh Defense Llc), 871 (L-K Tool and Mfg Inc Div of W and D Machinery Co), 2KM1 (Oshkosh Corp).

What NSN replaces 5120-00-977-5579?

There are 12 known substitutes for 5120-00-977-5579: 5310-00-285-7420, 2530-00-383-5060, 6515-00-384-6950 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J-8550?

Key specifications for J-8550: Usage Design: USED TO INSTALL THERMOSTAT HOUSING SEAL; End Item Identification: DETROIT DIESEL SERIES V-71, 92 AND 149 ENGINES. 2 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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