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Technical Data Sheet
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ST6055 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
Zebra · HOSE FITTING
PRODUCT OVERVIEW

ST6055: RESTRICTOR,FLUID FLOW.

Hard Shell/Form Fit Holster for units with Standard Back Cover. Key specifications include design_type: TUBULAR. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-364-4627, 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
ST6055
NSN: 4730-01-364-4627
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 50325 — COMCO, INC. DBA COMCO INC (USA)
SPECIFICATIONS
design_typeTUBULAR
NSN4730-01-364-4627
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST6055 · Zebra ⚠ 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
•
DESIGN TYPE: TUBULAR
TECHNICAL CHARACTERISTICS
DESIGN TYPETUBULAR
SUBSTITUTES & CROSS-REFERENCES 3
MB1226 ITEM 18Reference document
Same NSN cross-reference
Reference document — Secondary reference
P-200-404-31Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MB1226Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST6055?
ST6055 is a RESTRICTOR,FLUID FLOW manufactured by Zebra.
What parts can replace ST6055?
There are 3 known substitutes for ST6055: MB1226 ITEM 18, P-200-404-31, MB1226. Substitute compatibility should be verified for your specific system.
What is the NSN for ST6055?
ST6055 is cataloged in the U.S. Government catalog under NSN 4730-01-364-4627. 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.