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AN737RM66 ✓ Verified by PartsTable
— · 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 OR STEEL CORROSION RESISTING THUMBSCREW, overall_width: 0.562 INCHES NOMINAL IN, inside_diameter: 1.625 INCHES MINIMUM AND 2.062 INCHES MAXIMUM IN, style_designator: BAND, surface_treatment: PASSIVATE BAND, application/function: GENERAL PURPOSE USE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-9387, 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
AN737RM66
NSN: 4730-00-277-9387
FSC: 4730
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL OR STEEL CORROSION RESISTING THUMBSCREW
overall_width0.562 INCHES NOMINAL IN
inside_diameter1.625 INCHES MINIMUM AND 2.062 INCHES MAXIMUM IN
style_designatorBAND
surface_treatmentPASSIVATE BAND
application/functionGENERAL PURPOSE USE
fastening_device_typeTHUMB HEAD SCREW
nondefinitive_spec/std_dataA TYPE AND AN7374-66 PART
surface_treatment_document_and_classificationQQ-P-416 FED SPEC 2ND TREATMENT RESPONSE SCREW
NSN4730-00-277-9387
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN737RM66 · 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
•
INSIDE DIAMETER: 1.625 INCHES MINIMUM AND 2.062 INCHES MAXIMUM IN
•
FASTENING DEVICE TYPE: THUMB HEAD SCREW
•
MATERIAL: STEEL CORROSION RESISTING BAND
•
SURFACE TREATMENT: PASSIVATE BAND
•
STYLE DESIGNATOR: BAND
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER1.625 INCHES MINIMUM AND 2.062 INCHES MAXIMUM IN
OVERALL WIDTH0.562 INCHES NOMINAL IN
FASTENING DEVICE TYPETHUMB HEAD SCREW
MATERIALSTEEL CORROSION RESISTING BAND
SURFACE TREATMENTPASSIVATE BAND
MATERIALSTEEL OR STEEL CORROSION RESISTING THUMBSCREW
STYLE DESIGNATORBAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
AN737RM66Interchangeable
interchangeable cross-reference
interchangeable
MILC6985TYPEBInterchangeable
interchangeable cross-reference
interchangeable
AN748-56Interchangeable
interchangeable cross-reference
interchangeable
9276983-4Interchangeable
interchangeable cross-reference
interchangeable
AN737TW34-38Interchangeable
interchangeable cross-reference
interchangeable
ST9M540-34Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN737RM66?
AN737RM66 is a CLAMP,HOSE.
What parts can replace AN737RM66?
There are 12 known substitutes for AN737RM66: AN737RM66, MILC6985TYPEB, AN748-56 and 9 more. Substitute compatibility should be verified for your specific system.
Is AN737RM66 still available?
AN737RM66 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: July 2026