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81981300733 — ADAPTOR

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

81981300733: ADAPTOR.

The ADAPTOR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL (PIPE) SECOND END, special_features: PIPE THREADS ARE BRITISH STANDARD PIPE - PARALLEL (BSPP); HAS 19.0 MM NUT MOLDED INTO FITTING FOR WRENCHING MM, nominal_thread_size: 0.438 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-273-3181, 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
81981300733
NSN: 4730-01-273-3181
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: D3273 — MAN TRUCK & BUS SE (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL (PIPE) SECOND END
special_featuresPIPE THREADS ARE BRITISH STANDARD PIPE - PARALLEL (BSPP); HAS 19.0 MM NUT MOLDED INTO FITTING FOR WRENCHING MM
nominal_thread_size0.438 INCHES FIRST END IN
nominal_overall_length32.0 MILLIMETERS MM
thread_quantity_per_inch19 SECOND END
thread_series_designatorUNF FIRST END
furnished_items_and_quantity1 PREFORMED PACKING AND 1 PREINSERTED RING
reduced_passage_nominal_inside_diameter4.4 MILLIMETERS SECOND END MM
part_name_assigned_by_controlling_agencyF4OMX MALE CONNECTOR BSPP
NSN4730-01-273-3181
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81981300733 · 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
SUBSTITUTES & CROSS-REFERENCES 2
980 8213Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
15012645Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81981300733?
81981300733 is a ADAPTOR.
What parts can replace 81981300733?
There are 2 known substitutes for 81981300733: 980 8213, 15012645. Substitute compatibility should be verified for your specific system.
What is the NSN for 81981300733?
81981300733 is cataloged in the U.S. Government catalog under NSN 4730-01-273-3181. This indicates validated use in U.S. government and defense supply chains.
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