PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-506Inserter,seal

Bosch Automotive Service Solutions Ltd · NSN 5120-01-123-0132 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-123-0132 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-123-0132. Primary manufacturer part number: 21-506.
Features
  • Inserter,seal — FSC 5120
  • 2 verified cross-references
  • Primary manufacturer: Bosch Automotive Service Solutions Ltd
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Inserter,seal, cataloged under National Stock Number 5120-01-123-0132, 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 Ltd. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-123-0132
Primary Part Number21-506
Item NameInserter,seal
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerBosch Automotive Service Solutions Ltd
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
1650-00-168-578421506 INTERCHANGEABLE
Cap,valve
Eaton Aerospace Llc
5120-00-752-903121506 INTERCHANGEABLE
Punch,drive Pin
Mayhew Steel Products Inc
1680-00-760-309421506 INTERCHANGEABLE
Control Assembly,push-Pull
Transdigm Inc
6610-00-919-274021506 INTERCHANGEABLE
Diaphragm Assy
Aerosonic Llc
2990-01-059-9440 INTERCHANGEABLE
Piston
6625-01-070-5910623P INTERCHANGEABLE
Lead Set,test
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
4820-01-228-780421506 INTERCHANGEABLE
Retainer,disk,valve
Barksdale, Inc
6685-01-289-0950G21506 INTERCHANGEABLE
Control,temperature,indicating
National Oil Well Dba Iec Baylor
4820-01-338-229321506 INTERCHANGEABLE
Cap,valve
Schneider Electric Systems Usa Inc
2930-01-567-127887687372 INTERCHANGEABLE
Cooler,lubricating Oil,engine
Cnh Industrial America Llc Dba Cnh America
Cross-Reference Index
Part NumberManufacturer
21-506 Churchill V L Ltd (GBR)
21-506 PRIMARY Bosch Automotive Service Solutions Ltd (GBR)
Related Parts
1650-00-168-5784INTERCHANGEABLE
CAP,VALVE
21506
5120-00-752-9031INTERCHANGEABLE
PUNCH,DRIVE PIN
21506
1680-00-760-3094INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
21506
6610-00-919-2740INTERCHANGEABLE
DIAPHRAGM ASSY
21506
2990-01-059-9440INTERCHANGEABLE
PISTON
6625-01-070-5910INTERCHANGEABLE
LEAD SET,TEST
623P
4820-01-228-7804INTERCHANGEABLE
RETAINER,DISK,VALVE
21506
6685-01-289-0950INTERCHANGEABLE
CONTROL,TEMPERATURE,INDICATING
G21506
4820-01-338-2293INTERCHANGEABLE
CAP,VALVE
21506
2930-01-567-1278INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
87687372
1005-01-705-8245INTERCHANGEABLE
SEAR
21506

Frequently Asked Questions

What is NSN 5120-01-123-0132?

NSN 5120-01-123-0132 is a Inserter,seal, manufactured by Bosch Automotive Service Solutions Ltd, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-123-0132?

NSN 5120-01-123-0132 has 2 cross-referenced part numbers: 21-506 (Churchill V L Ltd), 21-506 (Bosch Automotive Service Solutions Ltd).

What NSN replaces 5120-01-123-0132?

There are 11 known substitutes for 5120-01-123-0132: 1650-00-168-5784, 5120-00-752-9031, 1680-00-760-3094 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-506?

Key specifications for 21-506: End Item Identification: 1940-01-105-5728. 1 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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