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3018T55 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3018T55: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 347 OR STEEL COMP 304L OVERALL, thread_class: 3B FIRST END, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: PLAIN (TUBE) FIRST END, special_features: 0.563 IN. ACROSS FLATS HEX WRENCHING FEATURE W/TWO 0.055 IN.

DIA HOLES,0.510 IN. APART IN, nominal_thread_size: 0.4375 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-304-7552, 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
3018T55
NSN: 4730-01-304-7552
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 347 OR STEEL COMP 304L OVERALL
thread_class3B FIRST END
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_stylePLAIN (TUBE) FIRST END
special_features0.563 IN. ACROSS FLATS HEX WRENCHING FEATURE W/TWO 0.055 IN. DIA HOLES,0.510 IN. APART IN
nominal_thread_size0.4375 INCHES FIRST END IN
nominal_overall_length0.805 INCHES IN
thread_series_designatorUNF FIRST END
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-01-304-7552
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3018T55 · 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: 0.805 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.4375 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
NOMINAL OVERALL LENGTH0.805 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.4375 INCHES FIRST END IN
NOMINAL THREAD SIZE0.4375 INCHES SECOND END IN
SPECIAL FEATURES0.563 IN. ACROSS FLATS HEX WRENCHING FEATURE W/TWO 0.055 IN. DIA HOLES,0.510 IN. APART IN
THREAD CLASS3A SECOND END A
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

No substitute or cross-reference records for this part.

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 3018T55?
3018T55 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What is the NSN for 3018T55?
3018T55 is cataloged in the U.S. Government catalog under NSN 4730-01-304-7552. This indicates validated use in U.S. government and defense supply chains.
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