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8U540 ✓ 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 RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include orifice_diameter: 0.090 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-220-0111, 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
8U540
NSN: 4730-01-220-0111
FSC: 4730
CAGE: 08199 — STANLEY HARRISON CORPORATION (USA)
SPECIFICATIONS
orifice_diameter0.090 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
NSN4730-01-220-0111
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 8U540 · 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: 0.090 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
ORIFICE DIAMETER0.090 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
216-01023-13Interchangeable
interchangeable cross-reference
interchangeable
155-S9-16DInterchangeable
interchangeable cross-reference
interchangeable
155S9-16D10Interchangeable
interchangeable cross-reference
interchangeable
81981260038Interchangeable
interchangeable cross-reference
interchangeable
26877Interchangeable
interchangeable cross-reference
interchangeable
201153Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8U540?
8U540 is a RESTRICTOR,FLUID FLOW.
What parts can replace 8U540?
There are 8 known substitutes for 8U540: 216-01023-13, 155-S9-16D, 155S9-16D10 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8U540?
8U540 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-220-0111. 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: July 2026