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Technical Data Sheet
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503-0274 — Technical Data Sheet

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— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

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: 2.156 INCHES NOMINAL IN, style_designator: BAND, surface_treatment: PASSIVATE OVERALL, fastening_device_type: PLAIN SLOTTED HEAD SCREW. This part is cataloged in the Federal Logistics Information System under NSN 4730-00-999-9057, 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
503-0274
NSN: 4730-00-999-9057
FSC: 4730
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.562 INCHES NOMINAL IN
inside_diameter2.156 INCHES NOMINAL IN
style_designatorBAND
surface_treatmentPASSIVATE OVERALL
fastening_device_typePLAIN SLOTTED HEAD SCREW
NSN4730-00-999-9057
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 503-0274 · 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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
STYLE DESIGNATOR: BAND
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
FASTENING DEVICE TYPE: PLAIN SLOTTED HEAD SCREW
•
INSIDE DIAMETER: 2.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORBAND
SURFACE TREATMENTPASSIVATE OVERALL
FASTENING DEVICE TYPEPLAIN SLOTTED HEAD SCREW
INSIDE DIAMETER2.156 INCHES NOMINAL IN
OVERALL WIDTH0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
50344InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7538InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10054571InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
367-059-001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2AF931InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
503-0365InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 503-0274?
503-0274 is a CLAMP,HOSE.
What parts can replace 503-0274?
There are 12 known substitutes for 503-0274: 50344, 7538, 10054571 and 9 more. Substitute compatibility should be verified for your specific system.
Is 503-0274 still available?
503-0274 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026