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PartsTable / COMPONENT / NA1802 ITEM 31B
NA1802 ITEM 31B ✓ 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 PUMP UNIT,CENTRIFUGAL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nominal_thread_size: 0.125 INCHES EXTERNAL IN, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, thread_series_designator: NPT EXTERNAL, nominal_pipe_size_for_which_designed: 0.125 INCHES 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 4730-01-422-7216, 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
NA1802 ITEM 31B
NSN: 4730-01-422-7216
FSC: 4730
CAGE: 83130 — AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nominal_thread_size0.125 INCHES EXTERNAL IN
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
thread_series_designatorNPT EXTERNAL
nominal_pipe_size_for_which_designed0.125 INCHES IN
NSN4730-01-422-7216
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: NA1802 ITEM 31B · 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 CORROSION RESISTING OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES EXTERNAL IN
•
THREAD SERIES DESIGNATOR: NPT EXTERNAL
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.125 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE0.125 INCHES EXTERNAL IN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
THREAD SERIES DESIGNATORNPT EXTERNAL
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.125 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
NA1802Interchangeable
interchangeable cross-reference
interchangeable
NA1802 ITEM 74AInterchangeable
interchangeable cross-reference
interchangeable
249-33-1016Interchangeable
interchangeable cross-reference
interchangeable
3-0447-01Interchangeable
interchangeable cross-reference
interchangeable
15180-5Interchangeable
interchangeable cross-reference
interchangeable
PL.058CRSP-1 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NA1802 ITEM 31B?
NA1802 ITEM 31B is a PUMP UNIT,CENTRIFUGAL.
What parts can replace NA1802 ITEM 31B?
There are 20 known substitutes for NA1802 ITEM 31B: NA1802, NA1802 ITEM 74A, 249-33-1016 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NA1802 ITEM 31B?
NA1802 ITEM 31B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-422-7216. 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