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Technical Data Sheet
PartsTable / COMPONENT / 3-1664-20-374-6
3-1664-20-374-6 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The HOSE,AIR DUCT is a the manufacturer industrial component. Key specifications include material: FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR REINFORCING CORD, wall_thickness: 0.100 INCHES MAXIMUM IN, connection_type: SOFT BOTH ENDS, inside_diameter: 2.500 INCHES NOMINAL FIRST END IN, connection_style: ROUND BOTH ENDS, style_designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-516-3296, 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
3-1664-20-374-6
NSN: 4720-00-516-3296
FSC: 4720
CAGE: 70628 — ARROWHEAD PRODUCTS CORP (USA)
SPECIFICATIONS
materialFIBERGLASS AND RUBBER CHLOROPRENE CLASS CR REINFORCING CORD
wall_thickness0.100 INCHES MAXIMUM IN
connection_typeSOFT BOTH ENDS
inside_diameter2.500 INCHES NOMINAL FIRST END IN
connection_styleROUND BOTH ENDS
style_designatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
end_overall_length1.500 INCHES NOMINAL BOTH ENDS IN
operating_pressure6.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
end_inside_diameter2.500 INCHES NOMINAL BOTH ENDS IN
cross-sectional_shape_styleROUND
measuring_method_and_length93.500 INCHES NOMINAL OVERALL IN
minimum_inside_bending_radius0.833 INCHES IN
NSN4720-00-516-3296
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 3-1664-20-374-6 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: FIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FIRST PLY
•
CONNECTION TYPE: SOFT BOTH ENDS
•
END INSIDE DIAMETER: 2.500 INCHES NOMINAL BOTH ENDS IN
•
INSIDE DIAMETER: 2.500 INCHES NOMINAL FIRST END IN
•
STYLE DESIGNATOR: HELICALLY WOUND CONTINOUS WIRE SUPPORTED
•
OPERATING PRESSURE: 6.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALFIBERGLASS AND RUBBER CHLOROPRENE CLASS CR FIRST PLY
MATERIALFIBERGLASS AND RUBBER CHLOROPRENE CLASS CR SECOND PLY
CONNECTION TYPESOFT BOTH ENDS
END INSIDE DIAMETER2.500 INCHES NOMINAL BOTH ENDS IN
INSIDE DIAMETER2.500 INCHES NOMINAL FIRST END IN
STYLE DESIGNATORHELICALLY WOUND CONTINOUS WIRE SUPPORTED
MATERIALSTEEL REINFORCING WIRE
OPERATING PRESSURE6.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
MEASURING METHOD AND LENGTH93.500 INCHES NOMINAL OVERALL IN
CONNECTION STYLEROUND BOTH ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
31310Interchangeable
interchangeable cross-reference
interchangeable
322235Interchangeable
interchangeable cross-reference
interchangeable
R4303SInterchangeable
interchangeable cross-reference
interchangeable
GGG-F-331 TY18CL6Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-331Interchangeable
interchangeable cross-reference
interchangeable
A-A-2447Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-1664-20-374-6?
3-1664-20-374-6 is a HOSE,AIR DUCT.
What parts can replace 3-1664-20-374-6?
There are 21 known substitutes for 3-1664-20-374-6: 31310, 322235, R4303S and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-1664-20-374-6?
3-1664-20-374-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-516-3296. 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