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Technical Data Sheet
PartsTable / COMPONENT / AA2921I2B
AA2921I2B ✓ 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 COUPLING ASSEMBLY,HOSE is a the manufacturer industrial component. Key specifications include nominal_overall_length: 2.000 INCHES IN, nondefinitive_spec/std_data: 1 UNIT AND 2 CLASS AND 3/4 SIZE, nominal_inside_diameter_hose_accommodated: 0.750 INCHES ALL ENDS IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-063-3911, 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
AA2921I2B
NSN: 4730-00-063-3911
FSC: 4730
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
nominal_overall_length2.000 INCHES IN
nondefinitive_spec/std_data1 UNIT AND 2 CLASS AND 3/4 SIZE
nominal_inside_diameter_hose_accommodated0.750 INCHES ALL ENDS IN
NSN4730-00-063-3911
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AA2921I2B · 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
•
NONDEFINITIVE SPEC/STD DATA: 1 UNIT AND 2 CLASS AND 3/4 SIZE
•
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.750 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA1 UNIT AND 2 CLASS AND 3/4 SIZE
NOMINAL OVERALL LENGTH2.000 INCHES IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.750 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
A-A-2921Interchangeable
interchangeable cross-reference
interchangeable
226-ZInterchangeable
interchangeable cross-reference
interchangeable
AA2921C2AInterchangeable
interchangeable cross-reference
interchangeable
234C3-4HOSEInterchangeable
interchangeable cross-reference
interchangeable
AA2921M2BInterchangeable
interchangeable cross-reference
interchangeable
234CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA2921I2B?
AA2921I2B is a COUPLING ASSEMBLY,HOSE.
What parts can replace AA2921I2B?
There are 18 known substitutes for AA2921I2B: A-A-2921, 226-Z, AA2921C2A and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA2921I2B?
AA2921I2B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-063-3911. 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