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Technical Data Sheet
PartsTable / COMPONENT / TC 1-1/4
TC 1-1/4 ✓ 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 TC 1-1/4 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 4730-00-221-2398, 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
TC 1-1/4
NSN: 4730-00-221-2398
FSC: 4730
CAGE: 84849 — SAMUEL LEVINE PLUMBING AND HEATING SUPPLIES, INC. DIV SLPHS INC (USA)
SPECIFICATIONS
Part NumberTC 1-1/4
NSN4730-00-221-2398
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: TC 1-1/4 · 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
•
NOMINAL OUTSIDE DIAMETER: 1.250 INCHES SECOND END IN
•
FLANGE SHAPE: ROUND SECOND END
•
FURNISHED ITEMS AND QUANTITY: 1 LOCKNUT AND 1 FRICTION RING
•
NOMINAL THREAD SIZE: 1.250 INCHES FIRST END IN
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
FLANGE FACE DESIGN: PLAIN SECOND END
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER1.250 INCHES SECOND END IN
FLANGE SHAPEROUND SECOND END
FURNISHED ITEMS AND QUANTITY1 LOCKNUT AND 1 FRICTION RING
NOMINAL THREAD SIZE1.250 INCHES FIRST END IN
THREAD SERIES DESIGNATORNPT FIRST END
FLANGE FACE DESIGNPLAIN SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
CONNECTION TYPEFLANGE SECOND END
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
TRU-7160Interchangeable
interchangeable cross-reference
interchangeable
334616-1Interchangeable
interchangeable cross-reference
interchangeable
10274949Interchangeable
interchangeable cross-reference
interchangeable
TC-114Interchangeable
interchangeable cross-reference
interchangeable
TA-115-0-0-1Interchangeable
interchangeable cross-reference
interchangeable
DYDA457Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TC 1-1/4?
TC 1-1/4 is a TC 1-1/4.
What parts can replace TC 1-1/4?
There are 16 known substitutes for TC 1-1/4: TRU-7160, 334616-1, 10274949 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TC 1-1/4?
TC 1-1/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-221-2398. 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