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195993 — ADAPTER,STRAIGHT,FLANGE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

195993: ADAPTER,STRAIGHT,FLANGE TO TUBE.

ADAPTER,STRAIGHT,FLANGE TO TUBE. Key specifications include material: STEEL OVERALL, flange_shape: TRIANGULAR WITH HOLES SECOND END, connection_style: FLARED (TUBE) FIRST END, bolt_hole_quantity: 3 SECOND END, flange_face_design: PLAIN SECOND END, fsc_application_data: ACFT ENG R2800. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-031-6335, 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
195993
NSN: 4730-00-031-6335
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL OVERALL
flange_shapeTRIANGULAR WITH HOLES SECOND END
connection_styleFLARED (TUBE) FIRST END
bolt_hole_quantity3 SECOND END
flange_face_designPLAIN SECOND END
fsc_application_dataACFT ENG R2800
bolt_hole_nominal_diameter0.2656 INCHES SECOND END IN
material_document_and_classificationAMS5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.539 INCHES FIRST END IN
NSN4730-00-031-6335
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 195993 · 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
•
FLANGE SHAPE: TRIANGULAR WITH HOLES SECOND END
•
FSC APPLICATION DATA: ACFT ENG R2800
•
FLANGE FACE DESIGN: PLAIN SECOND END
•
CONNECTION STYLE: FLARED (TUBE) FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BOLT HOLE NOMINAL DIAMETER: 0.2656 INCHES SECOND END IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.539 INCHES FIRST END IN
•
BOLT HOLE QUANTITY: 3 SECOND END
TECHNICAL CHARACTERISTICS
FLANGE SHAPETRIANGULAR WITH HOLES SECOND END
FSC APPLICATION DATAACFT ENG R2800
FLANGE FACE DESIGNPLAIN SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
BOLT HOLE NOMINAL DIAMETER0.2656 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.539 INCHES FIRST END IN
BOLT HOLE QUANTITY3 SECOND END
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
M225Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 195993?
195993 is a ADAPTER,STRAIGHT,FLANGE TO TUBE.
What parts can replace 195993?
There is 1 known substitute for 195993: M225. Substitute compatibility should be verified for your specific system.
What is the NSN for 195993?
195993 is cataloged in the U.S. Government catalog under NSN 4730-00-031-6335. 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.