PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 4803B
4803B ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 12L14, flange_width: 0.240 INCHES NOMINAL IN, overall_length: 0.660 INCHES NOMINAL IN, style_designator: SLEEVE, seat_angle_in_deg: 33.0, surface_treatment: CADMIUM AND CHROMATE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-895-2975, 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
4803B
NSN: 4730-00-895-2975
FSC: 4730
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
materialSTEEL COMP 12L14
flange_width0.240 INCHES NOMINAL IN
overall_length0.660 INCHES NOMINAL IN
style_designatorSLEEVE
seat_angle_in_deg33.0
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.797 INCHES NOMINAL IN
metallic_hardness_rating70.0 MINIMUM ROCKWELL B AND 95.0 MAXIMUM ROCKWELL B
material_document_and_classificationFED STD 66, COMP 12L14 FED STD SINGLE MATERIAL RESPONSE
hose/tube_outside_diameter_for_which_designed0.625 INCHES NOMINAL IN
NSN4730-00-895-2975
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4803B · 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
•
METALLIC HARDNESS RATING: 70.0 MINIMUM ROCKWELL B AND 95.0 MAXIMUM ROCKWELL B
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.625 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 12L14
•
FLANGE WIDTH: 0.240 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66, COMP 12L14 FED STD SINGLE MATERIAL RESPONSE
•
STYLE DESIGNATOR: SLEEVE
TECHNICAL CHARACTERISTICS (FLIS)
METALLIC HARDNESS RATING70.0 MINIMUM ROCKWELL B AND 95.0 MAXIMUM ROCKWELL B
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.625 INCHES NOMINAL IN
MATERIALSTEEL COMP 12L14
FLANGE WIDTH0.240 INCHES NOMINAL IN
OVERALL LENGTH0.660 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66, COMP 12L14 FED STD SINGLE MATERIAL RESPONSE
STYLE DESIGNATORSLEEVE
SEAT ANGLE IN DEG33.0
FLANGE OUTSIDE DIAMETER0.797 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
95RN03Interchangeable
interchangeable cross-reference
interchangeable
NM95Interchangeable
interchangeable cross-reference
interchangeable
MCS319Interchangeable
interchangeable cross-reference
interchangeable
038833-0001Interchangeable
interchangeable cross-reference
interchangeable
488853-047Interchangeable
interchangeable cross-reference
interchangeable
A319Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4803B?
4803B is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace 4803B?
There are 12 known substitutes for 4803B: 95RN03, NM95, MCS319 and 9 more. Substitute compatibility should be verified for your specific system.
Is 4803B still available?
4803B is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026