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PartsTable / COMPONENT / QS300M80S
QS300M80S ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_width: 0.562 INCHES NOMINAL IN, inside_diameter: 2.500 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN, special_features: SUPPORTS GRUMMAN A10A AIRCRAFT, style_designator: WIRE, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-725-0537, 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
QS300M80S
NSN: 4730-00-725-0537
FSC: 4730
CAGE: 08484 — BREEZE-EASTERN LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.562 INCHES NOMINAL IN
inside_diameter2.500 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
special_featuresSUPPORTS GRUMMAN A10A AIRCRAFT
style_designatorWIRE
surface_treatmentPASSIVATE OVERALL
fastening_device_typeSLOTTED HEXAGON HEAD SCREW
NSN4730-00-725-0537
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: QS300M80S · 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 BAND
•
SURFACE TREATMENT: CADMIUM THUMBSCREW
•
STYLE DESIGNATOR: BAND
•
INSIDE DIAMETER: 0.688 INCHES MINIMUM AND 6.125 INCHES MAXIMUM IN
•
FASTENING DEVICE TYPE: THUMB HEAD SCREW
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING BAND
MATERIALSTEEL THUMBSCREW
SURFACE TREATMENTCADMIUM THUMBSCREW
STYLE DESIGNATORBAND
INSIDE DIAMETER0.688 INCHES MINIMUM AND 6.125 INCHES MAXIMUM IN
SPECIAL FEATURESSUPPORTS GRUMMAN A10A AIRCRAFT
FASTENING DEVICE TYPETHUMB HEAD SCREW
OVERALL WIDTH0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
360-HZInterchangeable
interchangeable cross-reference
interchangeable
490-ZFInterchangeable
interchangeable cross-reference
interchangeable
82320Interchangeable
interchangeable cross-reference
interchangeable
108-750-1Interchangeable
interchangeable cross-reference
interchangeable
1183Interchangeable
interchangeable cross-reference
interchangeable
75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is QS300M80S?
QS300M80S is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace QS300M80S?
There are 26 known substitutes for QS300M80S: 360-HZ, 490-ZF, 82320 and 23 more. Substitute compatibility should be verified for your specific system.
Is QS300M80S still available?
QS300M80S 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