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Technical Data Sheet
PartsTable / COMPONENT / 383-1-3/4
383-1-3/4 ✓ 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 383-1-3/4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-193-0879, 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
383-1-3/4
NSN: 4730-00-193-0879
FSC: 4730
CAGE: 54578 — GRINNELL CORP SUB OF TYCO INTL US INC (USA)
SPECIFICATIONS
Part Number383-1-3/4
NSN4730-00-193-0879
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 383-1-3/4 · 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
•
INTERNAL THREAD SIZE: 3/4-14
•
EXTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
•
INTERNAL THREAD DIRECTION: RIGHT-HAND
•
EXTERNAL THREAD DIRECTION: RIGHT-HAND
•
INTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
•
STYLE DESIGNATOR: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND A STYLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-I-666, GRADE 1 FED SPEC 1ST MATERIAL RESPONSE AND QQ-I-666, GRADE 2 FED SPEC 2ND MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL THREAD SIZE3/4-14
EXTERNAL SCREW THREAD SERIES DESIGNATORNPT
INTERNAL THREAD DIRECTIONRIGHT-HAND
EXTERNAL THREAD DIRECTIONRIGHT-HAND
INTERNAL SCREW THREAD SERIES DESIGNATORNPT
STYLE DESIGNATOROUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
NONDEFINITIVE SPEC/STD DATA2 TYPE AND A STYLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-I-666, GRADE 1 FED SPEC 1ST MATERIAL RESPONSE AND QQ-I-666, GRADE 2 FED SPEC 2ND MATERIAL RESPONSE
MATERIALIRON CAST UNS F22400 OR IRON CAST UNS F22200
EXTERNAL THREAD SIZE1-11-1/2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
WWP471TYPE2STYLEBCLASS1Interchangeable
interchangeable cross-reference
interchangeable
AA59616BDQBUFBInterchangeable
interchangeable cross-reference
interchangeable
WW-P-471Interchangeable
interchangeable cross-reference
interchangeable
CS4510-0142Interchangeable
interchangeable cross-reference
interchangeable
2814Interchangeable
interchangeable cross-reference
interchangeable
9382-4318Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 383-1-3/4?
383-1-3/4 is a 383-1-3/4.
What parts can replace 383-1-3/4?
There are 18 known substitutes for 383-1-3/4: WWP471TYPE2STYLEBCLASS1, AA59616BDQBUFB, WW-P-471 and 15 more. Substitute compatibility should be verified for your specific system.
Is 383-1-3/4 still available?
383-1-3/4 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