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4TZ-A — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4TZ-A: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: ALUMINUM ALLOY, 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 U.S.

Government catalog under NSN 4730-01-016-9923, 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
4TZ-A
NSN: 4730-01-016-9923
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 54938 — PARKER-HANNIFIN CORPORATION DIV INSTRUMENTATION PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
style_designatorTAPERED
casehardening_indicatorNOT CASEHARDENED
end_item_identificationSUPPORTS GRUMMAN A10 AIRCRAFT
hose/tube_outside_diameter_for_which_designed0.250 INCHES NOMINAL IN
NSN4730-01-016-9923
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4TZ-A · 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
•
STYLE DESIGNATOR: TAPERED
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ALUMINUM ALLOY
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTAPERED
CASEHARDENING INDICATORNOT CASEHARDENED
END ITEM IDENTIFICATIONSUPPORTS GRUMMAN A10 AIRCRAFT
MATERIALALUMINUM ALLOY
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
530474-37Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4TZ-DReference document
Same NSN cross-reference
Reference document — Secondary reference
11462208-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4TZ-A?
4TZ-A is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 4TZ-A?
There are 3 known substitutes for 4TZ-A: 530474-37, 4TZ-D, 11462208-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 4TZ-A?
4TZ-A is cataloged in the U.S. Government catalog under NSN 4730-01-016-9923. 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.