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Technical Data Sheet
PartsTable / COMPONENT / 3588-1-4
3588-1-4 ✓ 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 material: STEEL COMP 1212, end_style: VERTEX BELOW CENTER, ring_style: ANGULAR CAP, usage_design: INTERNAL OR EXTERNAL, inside_diameter: 1.756 INCHES NOMINAL IN, major_thickness: 0.030 INCHES NOMINAL 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 4730-00-034-8538, 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
3588-1-4
NSN: 4730-00-034-8538
FSC: 4730
CAGE: 63686 — THE WALWORTH COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 1212
end_styleVERTEX BELOW CENTER
ring_styleANGULAR CAP
usage_designINTERNAL OR EXTERNAL
inside_diameter1.756 INCHES NOMINAL IN
major_thickness0.030 INCHES NOMINAL IN
outside_diameter1.908 INCHES NOMINAL IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS,NO. 5010 ASSN STD SINGLE MATERIAL RESPONSE
NSN4730-00-034-8538
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3588-1-4 · 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
•
LENGTH: 0.875 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
DESIGN TYPE: TUBULAR
•
HOSE/TUBE SIZE FOR WHICH DESIGNED: 1/4 IN.OD TUBE IN
•
THREAD PROVISION: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
•
ORIFICE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.875 INCHES NOMINAL IN
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
DESIGN TYPETUBULAR
HOSE/TUBE SIZE FOR WHICH DESIGNED1/4 IN.OD TUBE IN
THREAD PROVISIONUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
ORIFICE DIAMETER0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
5623Interchangeable
interchangeable cross-reference
interchangeable
1006Interchangeable
interchangeable cross-reference
interchangeable
701364Interchangeable
interchangeable cross-reference
interchangeable
309623Interchangeable
interchangeable cross-reference
interchangeable
358814Interchangeable
interchangeable cross-reference
interchangeable
5623-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3588-1-4?
3588-1-4 is a RESTRICTOR,FLUID FLOW.
What parts can replace 3588-1-4?
There are 15 known substitutes for 3588-1-4: 5623, 1006, 701364 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3588-1-4?
3588-1-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-034-8538. 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