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Technical Data Sheet
PartsTable / COMPONENT / CS-306-01
CS-306-01 ✓ 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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 0.188 INCHES NOMINAL IN, style_designator: TAPERED, casehardening_indicator: NOT CASEHARDENED, end_item_identification: SUPPORTS GRUMMAN A10 AIRCRAFT, hose/tube_outside_diameter_for_which_designed: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-888-6778, 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
CS-306-01
NSN: 4730-00-888-6778
FSC: 4730
CAGE: H0212 — KONINKLIJKE FABRIEK INVENTUM B.V. (NLD)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length0.188 INCHES NOMINAL IN
style_designatorTAPERED
casehardening_indicatorNOT CASEHARDENED
end_item_identificationSUPPORTS GRUMMAN A10 AIRCRAFT
hose/tube_outside_diameter_for_which_designed0.250 INCHES NOMINAL IN
NSN4730-00-888-6778
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: CS-306-01 · 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
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TAPERED
•
MATERIAL: STEEL CORROSION RESISTING
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.188 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
STYLE DESIGNATORTAPERED
END ITEM IDENTIFICATIONSUPPORTS GRUMMAN A10 AIRCRAFT
MATERIALSTEEL CORROSION RESISTING
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4TZSSInterchangeable
interchangeable cross-reference
interchangeable
906F054PC15Interchangeable
interchangeable cross-reference
interchangeable
403-1-316Interchangeable
interchangeable cross-reference
interchangeable
906F054 PIECE 15Interchangeable
interchangeable cross-reference
interchangeable
SS4031Interchangeable
interchangeable cross-reference
interchangeable
296843Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CS-306-01?
CS-306-01 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace CS-306-01?
There are 15 known substitutes for CS-306-01: 4TZSS, 906F054PC15, 403-1-316 and 12 more. Substitute compatibility should be verified for your specific system.
Is CS-306-01 still available?
CS-306-01 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026