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NAS595-4E — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

NAS595-4E: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL COMP 431, overall_length: 0.337 INCHES NOMINAL IN, style_designator: DOUBLE BEVEL FLARELESS, seat_angle_in_deg: 33.0, surface_treatment: PASSIVATE, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-121-0417, 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
NAS595-4E
NSN: 4730-00-121-0417
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 431
overall_length0.337 INCHES NOMINAL IN
style_designatorDOUBLE BEVEL FLARELESS
seat_angle_in_deg33.0
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
sleeve_outside_diameter0.384 INCHES NOMINAL IN
metallic_hardness_rating20.0 MINIMUM ROCKWELL C AND 32.0 MAXIMUM ROCKWELL C
material_document_and_classificationMIL-S-18732, COND HT-200 MIL SPEC SINGLE MATERIAL RESPONSE
hose/tube_outside_diameter_for_which_designed0.250 INCHES NOMINAL IN
NSN4730-00-121-0417
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: NAS595-4E · 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
•
SEAT ANGLE IN DEG: 33.0
•
STYLE DESIGNATOR: DOUBLE BEVEL FLARELESS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18732, COND HT-200 MIL SPEC SINGLE MATERIAL RESPONSE
•
SLEEVE OUTSIDE DIAMETER: 0.384 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL COMP 431
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG33.0
STYLE DESIGNATORDOUBLE BEVEL FLARELESS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18732, COND HT-200 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.337 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.384 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 431
METALLIC HARDNESS RATING20.0 MINIMUM ROCKWELL C AND 32.0 MAXIMUM ROCKWELL C
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NAS595-4E?
NAS595-4E is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What is the NSN for NAS595-4E?
NAS595-4E is cataloged in the U.S. Government catalog under NSN 4730-00-121-0417. This indicates validated use in U.S. government and defense supply chains.
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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.