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8455542 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

8455542: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, seat_angle: 60.0 DEGREES FIRST END, thread_class: 2A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END, nominal_thread_size: 0.562 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-073-1367, 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
8455542
NSN: 4730-01-073-1367
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
seat_angle60.0 DEGREES FIRST END
thread_class2A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
nominal_thread_size0.562 INCHES FIRST END IN
nominal_overall_length1.440 INCHES IN
thread_series_designatorUNF SECOND END
material_document_and_classificationASTM-A581 ASSN STD 1ST MATERIAL RESPONSE AND ASTM-A582 ASSN STD 2ND MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-01-073-1367
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 8455542 · 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
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.440 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A581 ASSN STD 1ST MATERIAL RESPONSE AND ASTM-A582 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.437 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL OVERALL LENGTH1.440 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A581 ASSN STD 1ST MATERIAL RESPONSE AND ASTM-A582 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.437 INCHES SECOND END IN
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
SEAT ANGLE60.0 DEGREES FIRST END
SPECIAL FEATURESDRILLED 0.090 IN. DIA THRU BOTH WALLS FIRST END FOR LEAK CHECK; 0.750 IN. HEX WRENCHING FACILITY FIRST END; SECOND END DRILLED 0.080 IN. DIA THRU 2WALLS 2 PLACES 90 DEGREES APART FOR AIR FLOW DIFFUSION IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
3304812-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 8455542?
8455542 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 8455542?
There is 1 known substitute for 8455542: 3304812-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 8455542?
8455542 is cataloged in the U.S. Government catalog under NSN 4730-01-073-1367. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.