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Technical Data Sheet
PartsTable / COMPONENT / MIL-F-24787/3-TYC-GPI-20
MIL-F-24787/3-TYC-GPI-20 ✓ 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 MIL-F-24787/3-TYC-GPI-20 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 4730-01-119-0557, 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
MIL-F-24787/3-TYC-GPI-20
NSN: 4730-01-119-0557
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-F-24787/3-TYC-GPI-20
NSN4730-01-119-0557
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-24787/3-TYC-GPI-20 · 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
•
SPECIFICATION/STANDARD DATA: 81349-MIL-H-24135 GOVERNMENT SPECIFICATION
•
THREAD CLASS: 3A SECOND END A
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
MAXIMUM OPERATING TEMP: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
THREAD QUANTITY PER INCH: 12 SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81349-MIL-H-24135 GOVERNMENT SPECIFICATION
THREAD CLASS3A SECOND END A
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD QUANTITY PER INCH12 SECOND END
CONNECTION STYLEGRIPPING NIPPLE (NOSE) FIRST END
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING FIRST END
MATERIALNICKEL ALLOY A OVERALL
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED2.000 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
4-190909 3-8 8Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-24135Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-24787/3 GRI TY CInterchangeable
interchangeable cross-reference
interchangeable
4-191909-1-20Interchangeable
interchangeable cross-reference
interchangeable
4C190909-1-20L1Interchangeable
interchangeable cross-reference
interchangeable
4-190909-1-20L1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-24787/3-TYC-GPI-20?
MIL-F-24787/3-TYC-GPI-20 is a MIL-F-24787/3-TYC-GPI-20.
What parts can replace MIL-F-24787/3-TYC-GPI-20?
There are 25 known substitutes for MIL-F-24787/3-TYC-GPI-20: 4-190909 3-8 8, MIL-H-24135, MIL-F-24787/3 GRI TY C and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-24787/3-TYC-GPI-20?
MIL-F-24787/3-TYC-GPI-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-119-0557. 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