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Technical Data Sheet
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HSS128 ✓ 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 CORROSION RESISTING OVERALL, overall_width: 0.563 INCHES NOMINAL IN, inside_diameter: 8.500 INCHES NOMINAL IN, special_features: 7.5", style_designator: WIRE, fastening_device_type: SLOTTED HEXAGON HEAD SCREW. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-138-8990, 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
HSS128
NSN: 4730-01-138-8990
FSC: 4730
CAGE: 72661 — DIXON VALVE & COUPLING COMPANY, LLC DIV DIXON FIRE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.563 INCHES NOMINAL IN
inside_diameter8.500 INCHES NOMINAL IN
special_features7.5"
style_designatorWIRE
fastening_device_typeSLOTTED HEXAGON HEAD SCREW
end_item_identification49'BUSL,SICR.NO.1559
NSN4730-01-138-8990
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: HSS128 · 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
•
INSIDE DIAMETER: 8.500 INCHES NOMINAL IN
•
FASTENING DEVICE TYPE: SLOTTED HEXAGON HEAD SCREW
•
STYLE DESIGNATOR: WIRE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
INSIDE DIAMETER8.500 INCHES NOMINAL IN
FASTENING DEVICE TYPESLOTTED HEXAGON HEAD SCREW
STYLE DESIGNATORWIRE
OVERALL WIDTH0.563 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
QS200-M120SInterchangeable
interchangeable cross-reference
interchangeable
200120SInterchangeable
interchangeable cross-reference
interchangeable
AS28778-28Interchangeable
interchangeable cross-reference
interchangeable
3-928N507-90Interchangeable
interchangeable cross-reference
interchangeable
N94-84928Interchangeable
interchangeable cross-reference
interchangeable
503140-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HSS128?
HSS128 is a CLAMP,HOSE.
What parts can replace HSS128?
There are 12 known substitutes for HSS128: QS200-M120S, 200120S, AS28778-28 and 9 more. Substitute compatibility should be verified for your specific system.
Is HSS128 still available?
HSS128 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