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PartsTable / COMPONENT / WWD128/AN737TW1
WWD128/AN737TW1 ✓ 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 WWD128/AN737TW1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-540-4032, 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
WWD128/AN737TW1
NSN: 4730-00-540-4032
FSC: 4730
CAGE: 66295 — WITTEK COMPANIES INTL INC (USA)
SPECIFICATIONS
Part NumberWWD128/AN737TW1
NSN4730-00-540-4032
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: WWD128/AN737TW1 · 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
•
STYLE DESIGNATOR: BAND
•
MATERIAL: STEEL CORROSION RESISTING SCREW
•
INSIDE DIAMETER: 3.125 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE BAND
•
FASTENING DEVICE TYPE: SLOTTED HEXAGON HEAD SCREW
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
OVERALL WIDTH0.500 INCHES NOMINAL IN
STYLE DESIGNATORBAND
MATERIALSTEEL CORROSION RESISTING SCREW
INSIDE DIAMETER3.125 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE BAND
FASTENING DEVICE TYPESLOTTED HEXAGON HEAD SCREW
CRITICALITY CODE JUSTIFICATIONFEAT
MATERIALSTEEL CORROSION RESISTING BAND
END ITEM IDENTIFICATIONAIRCRAFT USED ON: B-1B, C-17A, C-135, E-3A, F-4, F-15; SUPPORT EQUIPMENT, B-1 AIRCRAFT; ENGINE, AIRCRAFT, J-57 ALL MODELS (C-135, EC-135, B-52) A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
HW128-11Interchangeable
interchangeable cross-reference
interchangeable
050004Interchangeable
interchangeable cross-reference
interchangeable
17012R1Interchangeable
interchangeable cross-reference
interchangeable
945-6Interchangeable
interchangeable cross-reference
interchangeable
AN737TW58SSInterchangeable
interchangeable cross-reference
interchangeable
224Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WWD128/AN737TW1?
WWD128/AN737TW1 is a WWD128/AN737TW1.
What parts can replace WWD128/AN737TW1?
There are 19 known substitutes for WWD128/AN737TW1: HW128-11, 050004, 17012R1 and 16 more. Substitute compatibility should be verified for your specific system.
Is WWD128/AN737TW1 still available?
WWD128/AN737TW1 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