PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5257Inserter,seal

Meritor Heavy Vehicle Systems, Llc · NSN 5120-01-526-3289 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-526-3289 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-526-3289. Primary manufacturer part number: 5257.
Features
  • Inserter,seal — FSC 5120
  • 1 verified cross-reference
  • Primary manufacturer: Meritor Heavy Vehicle Systems, Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Inserter,seal, cataloged under National Stock Number 5120-01-526-3289, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Meritor Heavy Vehicle Systems, Llc. This item has 1 commercial cross-reference 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: Active.

Technical Specifications
ParameterValue
NSN5120-01-526-3289
Primary Part Number5257
Item NameInserter,seal
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerMeritor Heavy Vehicle Systems, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-065-56015257 INTERCHANGEABLE
Switch,trigger
Skil Corp
5330-00-107-00575257 INTERCHANGEABLE
Seal
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
1650-00-118-6866525-7 INTERCHANGEABLE
Coupling Assembly,p
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5330-00-286-687343-325 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
6105-00-606-6456SMD71714ANDSMC171585 INTERCHANGEABLE
Motor,alternating Current
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5975-00-847-01705257 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
5910-00-933-4061922-0583-070 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5306-01-068-45835166105 INTERCHANGEABLE
Bolt,ring
Naval Sea Systems Command
5950-01-098-86327890190-001 INTERCHANGEABLE
Transformer,power
L3harris Mas Inc Div L3harris Mas Inc.
5905-01-279-93895257 INTERCHANGEABLE
Resistor,thermal
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Cross-Reference Index
Part NumberManufacturer
5257 PRIMARY Meritor Heavy Vehicle Systems, Llc (USA)
Related Parts
5930-00-065-5601INTERCHANGEABLE
SWITCH,TRIGGER
5257
5330-00-107-0057INTERCHANGEABLE
SEAL
5257
1650-00-118-6866INTERCHANGEABLE
COUPLING ASSEMBLY,P
525-7
5330-00-286-6873INTERCHANGEABLE
SEAL,PLAIN ENCASED
43-325
6105-00-606-6456INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
SMD71714ANDSMC171585
5975-00-847-0170INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5257
5910-00-933-4061INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
922-0583-070
5306-01-068-4583INTERCHANGEABLE
BOLT,RING
5166105
5950-01-098-8632INTERCHANGEABLE
TRANSFORMER,POWER
7890190-001
5905-01-279-9389INTERCHANGEABLE
RESISTOR,THERMAL
5257
6505-01-347-0868INTERCHANGEABLE
SODIUM CHLORIDE INHALATION SOLUT
5330-01-368-3911INTERCHANGEABLE
RETAINER,PACKING
5257

Frequently Asked Questions

What is NSN 5120-01-526-3289?

NSN 5120-01-526-3289 is a Inserter,seal, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-526-3289?

NSN 5120-01-526-3289 has 1 cross-referenced part number: 5257 (Meritor Heavy Vehicle Systems, Llc).

What NSN replaces 5120-01-526-3289?

There are 12 known substitutes for 5120-01-526-3289: 5930-00-065-5601, 5330-00-107-0057, 1650-00-118-6866 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5257?

Key specifications for 5257: End Item Identification: 380501488696. 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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