PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 90/4.4.1
90/4.4.1 ✓ 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 90/4.4.1 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-244-2711, 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
90/4.4.1
NSN: 4730-01-244-2711
FSC: 4730
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
Part Number90/4.4.1
NSN4730-01-244-2711
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 90/4.4.1 · 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
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL: IRON BODY
•
FURNISHED ITEMS: STRAINER
•
DESIGN TYPE: BUCKET
•
INLET CONNECTION TYPE: FEMALE IRON PIPE
•
OUTLET CONNECTION TYPE: FEMALE IRON PIPE
•
SCREW THREAD SERIES DESIGNATOR: NPT LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
MATERIALIRON BODY
FURNISHED ITEMSSTRAINER
DESIGN TYPEBUCKET
END ITEM IDENTIFICATIONLESLIE CO. CONSTANTEMP HEATER MODEL E-300 AND E-600
INLET CONNECTION TYPEFEMALE IRON PIPE
OUTLET CONNECTION TYPEFEMALE IRON PIPE
SCREW THREAD SERIES DESIGNATORNPT LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
59906Interchangeable
interchangeable cross-reference
interchangeable
AG59906Interchangeable
interchangeable cross-reference
interchangeable
K60-198Interchangeable
interchangeable cross-reference
interchangeable
5-5906Interchangeable
interchangeable cross-reference
interchangeable
NDC00004-0054-01Interchangeable
interchangeable cross-reference
interchangeable
72309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90/4.4.1?
90/4.4.1 is a 90/4.4.1.
What parts can replace 90/4.4.1?
There are 19 known substitutes for 90/4.4.1: 59906, AG59906, K60-198 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90/4.4.1?
90/4.4.1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-244-2711. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026