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1213E1665 — REDUCER,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1213E1665: REDUCER,BOSS.

The REDUCER,BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thickness: 0.250 INCHES NOMINAL IN, neck_height: 0.750 INCHES NOMINAL IN, recess_depth: 0.130 INCHES NOMINAL IN, reducer_type: CONCENTRIC, thread_class: 2A FIRST END A. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-199-7897, 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
1213E1665
NSN: 4730-01-199-7897
NIINs: 011997897, 011997954, 012600332
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 54497 — MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thickness0.250 INCHES NOMINAL IN
neck_height0.750 INCHES NOMINAL IN
recess_depth0.130 INCHES NOMINAL IN
reducer_typeCONCENTRIC
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
flange_diameter3.750 INCHES NOMINAL IN
recess_diameter1.875 INCHES NOMINAL IN
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
style_designatorROUND, ONE BOLT HOLE CIRCLE
surface_treatmentPASSIVATE OVERALL
NSN4730-01-199-7897
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1213E1665 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.270 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
NOMINAL THREAD SIZE: 0.563 INCHES SECOND END IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THREAD CLASS: 2A FIRST END A
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH1.270 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
NOMINAL THREAD SIZE0.563 INCHES SECOND END IN
NOMINAL THREAD SIZE0.813 INCHES FIRST END IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A FIRST END A
THREAD CLASS3A SECOND END A
THREAD QUANTITY PER INCH16 FIRST END
SUBSTITUTES & CROSS-REFERENCES 2
1213E1665 FIND 230Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1210C2473Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 1213E1665?
1213E1665 is a REDUCER,BOSS.
What parts can replace 1213E1665?
There are 2 known substitutes for 1213E1665: 1213E1665 FIND 230, 1210C2473. Substitute compatibility should be verified for your specific system.
What is the NSN for 1213E1665?
1213E1665 is cataloged in the U.S. Government catalog under NSN 4730-01-199-7897. 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.