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Technical Data Sheet
PartsTable / COMPONENT / 1103-3/4
1103-3/4 ✓ 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 1103-3/4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-253-4415, 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
1103-3/4
NSN: 4730-00-253-4415
FSC: 4730
CAGE: 54578 — GRINNELL CORP SUB OF TYCO INTL US INC (USA)
SPECIFICATIONS
Part Number1103-3/4
NSN4730-00-253-4415
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1103-3/4 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
FC2003Interchangeable
interchangeable cross-reference
interchangeable
1025-6Interchangeable
interchangeable cross-reference
interchangeable
11387AInterchangeable
interchangeable cross-reference
interchangeable
SB1861RInterchangeable
interchangeable cross-reference
interchangeable
103S7Interchangeable
interchangeable cross-reference
interchangeable
SM-B-650699-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1103-3/4?
1103-3/4 is a 1103-3/4.
What parts can replace 1103-3/4?
There are 30 known substitutes for 1103-3/4: FC2003, 1025-6, 11387A and 27 more. Substitute compatibility should be verified for your specific system.
Is 1103-3/4 still available?
1103-3/4 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