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431137 — INSERT,CIRCUIT BREAKER

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

431137: INSERT,CIRCUIT BREAKER.

The INSERT,CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY AND STEEL OVERALL, special_features: GASKET NOT INCLUDED,NONSUBMERSIBLE, surface_treatment: ANODIZE OVERALL, locking_device_type: INTEGRAL KEY LOCK, fsc_application_data: TEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT, maximum_working_pressure: 60.000 POUNDS PER SQUARE INCH (PSI) LBS. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-538-8659, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 431137
NSN: 5340-00-538-8659
NIINs: 005388659, 010982136
FSC: 5340 — Hardware, Commercial
CAGE: 99321 — PARKER HANNIFIN CORP DBA PNEUTRONICS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY AND STEEL OVERALL
special_featuresGASKET NOT INCLUDED,NONSUBMERSIBLE
surface_treatmentANODIZE OVERALL
locking_device_typeINTEGRAL KEY LOCK
fsc_application_dataTEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT
maximum_working_pressure60.000 POUNDS PER SQUARE INCH (PSI) LBS
NSN5340-00-538-8659
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 431137 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FSC APPLICATION DATA: TEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT
•
LOCKING DEVICE TYPE: INTEGRAL KEY LOCK
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MAXIMUM WORKING PRESSURE: 60.000 POUNDS PER SQUARE INCH (PSI) LBS
•
MATERIAL: ALUMINUM ALLOY AND STEEL OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATATEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT
LOCKING DEVICE TYPEINTEGRAL KEY LOCK
SPECIAL FEATURESGASKET NOT INCLUDED,NONSUBMERSIBLE
SURFACE TREATMENTANODIZE OVERALL
MAXIMUM WORKING PRESSURE60.000 POUNDS PER SQUARE INCH (PSI) LBS
MATERIALALUMINUM ALLOY AND STEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
ST7M348-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 431137?
431137 is a INSERT,CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 431137?
There is 1 known substitute for 431137: ST7M348-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 431137?
431137 is cataloged in the U.S. Government catalog under NSN 5340-00-538-8659. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.