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PartsTable / COMPONENT / 2122-1/2 NPT
2122-1/2 NPT ✓ 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 2122-1/2 NPT 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 4730-00-623-9785, 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
2122-1/2 NPT
NSN: 4730-00-623-9785
FSC: 4730
CAGE: 80996 — ITT GRINNELL CORP (USA)
SPECIFICATIONS
Part Number2122-1/2 NPT
NSN4730-00-623-9785
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2122-1/2 NPT · 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
•
MATERIAL: STEEL OVERALL
•
HEAD TYPE: SOLID
•
THREAD SERIES DESIGNATOR: NPT EXTERNAL
•
CONNECTION STYLE: PLAIN
•
NOMINAL THREAD SIZE: 0.500 INCHES EXTERNAL IN
•
BODY TYPE: SOLID
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
HEAD TYPESOLID
THREAD SERIES DESIGNATORNPT EXTERNAL
CONNECTION STYLEPLAIN
NOMINAL THREAD SIZE0.500 INCHES EXTERNAL IN
BODY TYPESOLID
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.500 INCHES IN
DRIVE END STYLERAISED SQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
PP1Interchangeable
interchangeable cross-reference
interchangeable
T30Interchangeable
interchangeable cross-reference
interchangeable
101Interchangeable
interchangeable cross-reference
interchangeable
1B9746Interchangeable
interchangeable cross-reference
interchangeable
PP-1578/PDInterchangeable
interchangeable cross-reference
interchangeable
107-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2122-1/2 NPT?
2122-1/2 NPT is a 2122-1/2 NPT.
What parts can replace 2122-1/2 NPT?
There are 9 known substitutes for 2122-1/2 NPT: PP1, T30, 101 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2122-1/2 NPT?
2122-1/2 NPT is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-623-9785. 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