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2HL566 — Technical Data Sheet

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— · 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 RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.406 INCHES NOMINAL IN, orifice_diameter: 0.250 INCHES NOMINAL IN, end_item_identification: NSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-01-359-2530, 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
2HL566
NSN: 4730-01-359-2530
FSC: 4730
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
length0.406 INCHES NOMINAL IN
orifice_diameter0.250 INCHES NOMINAL IN
end_item_identificationNSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM)
NSN4730-01-359-2530
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2HL566 · 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
•
ORIFICE DIAMETER: 0.250 INCHES NOMINAL IN
•
LENGTH: 0.406 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
ORIFICE DIAMETER0.250 INCHES NOMINAL IN
END ITEM IDENTIFICATIONNSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM)
LENGTH0.406 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
23688InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
230183InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8156InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
183839-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
23688-201InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
02-163106InterchangeableGOVERNMENT REGISTRY
Restrictor,fluid Flow
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2HL566?
2HL566 is a RESTRICTOR,FLUID FLOW.
What parts can replace 2HL566?
There are 6 known substitutes for 2HL566: 23688, 230183, 8156 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2HL566?
2HL566 is cataloged in the Federal Logistics Information System under NSN 4730-01-359-2530. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026