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221B840-11 — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

221B840-11: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.125 INCHES FIRST END IN, nominal_overall_length: 1.016 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-090-9683, 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
221B840-11
NSN: 4730-01-090-9683
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30941 — EAST/WEST INDUSTRIES, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.125 INCHES FIRST END IN
nominal_overall_length1.016 INCHES IN
thread_series_designatorUNF SECOND END
NSN4730-01-090-9683
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 221B840-11 · 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: 1.016 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
•
THREAD CLASS: 3A SECOND END A
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH1.016 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
THREAD CLASS3A SECOND END A
MATERIALSTEEL COMP 303 OVERALL
THREAD SERIES DESIGNATORANPT FIRST END
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 221B840-11?
221B840-11 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What is the NSN for 221B840-11?
221B840-11 is cataloged in the U.S. Government catalog under NSN 4730-01-090-9683. This indicates validated use in U.S. government and defense supply chains.
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