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ST9M540 — CLAMP,HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST9M540: CLAMP,HOSE.

The CLAMP,HOSE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_width: 0.562 INCHES NOMINAL IN, inside_diameter: 3.625 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN, style_designator: WIRE, surface_treatment: PASSIVATE OVERALL, fastening_device_type: SLOTTED HEXAGON HEAD SCREW. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-0424, 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
ST9M540
NSN: 4730-00-278-0424
NIINs: 002780424, 005404032, 008107848, 013946649, 015297932
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.562 INCHES NOMINAL IN
inside_diameter3.625 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
style_designatorWIRE
surface_treatmentPASSIVATE OVERALL
fastening_device_typeSLOTTED HEXAGON HEAD SCREW
NSN4730-00-278-0424
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST9M540 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FASTENING DEVICE TYPE: THUMB HEAD SCREW
•
STYLE DESIGNATOR: BAND
•
INSIDE DIAMETER: 1.375 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE BAND
•
MATERIAL: STEEL COMP 301 BAND
TECHNICAL CHARACTERISTICS
FASTENING DEVICE TYPETHUMB HEAD SCREW
STYLE DESIGNATORBAND
OVERALL WIDTH0.500 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN
INSIDE DIAMETER1.375 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
SPECIAL FEATURESSINGLE WITH SHOE
SURFACE TREATMENTPASSIVATE BAND
END ITEM IDENTIFICATIONGRUMAN A-10 AIRCRAFT
MATERIALSTEEL COMP 301 BAND
MATERIALSTEEL CORROSION RESISTING THUMBSCREW
SUBSTITUTES & CROSS-REFERENCES 6
AN737TW58SSSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
224Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AN737TW58Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9224Reference document
Same NSN cross-reference
Reference document — Secondary reference
ST9M540-58Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WWD58Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST9M540?
ST9M540 is a CLAMP,HOSE.
What parts can replace ST9M540?
There are 6 known substitutes for ST9M540: AN737TW58SS, 224, AN737TW58 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST9M540?
ST9M540 is cataloged in the U.S. Government catalog under NSN 4730-00-278-0424. 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.