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Technical Data Sheet
PartsTable / COMPONENT / A-A-2921M1B
A-A-2921M1B ✓ 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 material: COPPER ALLOY, overall_length: 1.734 INCHES NOMINAL IN, nondefinitive_spec/std_data: 2 TYPE AND 3/4 SIZE, hose_inside_diameter_for_which_designed: 0.750 INCHES NOMINAL 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 4730-00-202-8305, 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
A-A-2921M1B
NSN: 4730-00-202-8305
FSC: 4730
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length1.734 INCHES NOMINAL IN
nondefinitive_spec/std_data2 TYPE AND 3/4 SIZE
hose_inside_diameter_for_which_designed0.750 INCHES NOMINAL IN
NSN4730-00-202-8305
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A-A-2921M1B · 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: COPPER ALLOY
•
HOSE INSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3/4 SIZE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.734 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
HOSE INSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 3/4 SIZE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
WW-C-1692Interchangeable
interchangeable cross-reference
interchangeable
A-A-2921Interchangeable
interchangeable cross-reference
interchangeable
AA2921I2BInterchangeable
interchangeable cross-reference
interchangeable
226-ZInterchangeable
interchangeable cross-reference
interchangeable
AA2921C2AInterchangeable
interchangeable cross-reference
interchangeable
234C3-4HOSEInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-A-2921M1B?
A-A-2921M1B is a COUPLING ASSEMBLY,HOSE.
What parts can replace A-A-2921M1B?
There are 14 known substitutes for A-A-2921M1B: WW-C-1692, A-A-2921, AA2921I2B and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-A-2921M1B?
A-A-2921M1B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-202-8305. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026