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Technical Data Sheet
PartsTable / COMPONENT / 16633-81
16633-81 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: RUBBER SYNTHETIC TUBE, temp_rating: -67.0 FAHRENHEIT AND 158.0 FAHRENHEIT SINGLE RESPONSE DEGF, inside_diameter: 0.375 INCHES NOMINAL IN, outside_diameter: 0.625 INCHES NOMINAL IN, operating_pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, burst_test_pressure: 1000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-041-1075, 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
16633-81
NSN: 4720-01-041-1075
FSC: 4720
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
temp_rating-67.0 FAHRENHEIT AND 158.0 FAHRENHEIT SINGLE RESPONSE DEGF
inside_diameter0.375 INCHES NOMINAL IN
outside_diameter0.625 INCHES NOMINAL IN
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
burst_test_pressure1000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
hydrostatic_test_pressure300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
cross-sectional_shape_styleROUND
measuring_method_and_length5.500 INCHES MINIMUM OVERALL AND 5.555 INCHES MAXIMUM OVERALL IN
specification/standard_data81349-MIL-H-5593 GOVERNMENT SPECIFICATION
NSN4720-01-041-1075
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 16633-81 · 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
•
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
BURST TEST PRESSURE: 1000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
•
OUTER COVERING ENVIRONMENTAL PROTECTION: FUEL RESISTANT AND OIL RESISTANT AND ABRASION RESISTANT
•
MEASURING METHOD AND LENGTH: 5.500 INCHES MINIMUM OVERALL AND 5.555 INCHES MAXIMUM OVERALL IN
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
SPECIFICATION/STANDARD DATA: 81349-MIL-H-5593 GOVERNMENT SPECIFICATION
•
INSIDE SURFACE CONDITION: SMOOTH
•
CRITICALITY CODE JUSTIFICATION: CRXX
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
BURST TEST PRESSURE1000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
OUTER COVERING ENVIRONMENTAL PROTECTIONFUEL RESISTANT AND OIL RESISTANT AND ABRASION RESISTANT
MEASURING METHOD AND LENGTH5.500 INCHES MINIMUM OVERALL AND 5.555 INCHES MAXIMUM OVERALL IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
SPECIFICATION/STANDARD DATA81349-MIL-H-5593 GOVERNMENT SPECIFICATION
INSIDE SURFACE CONDITIONSMOOTH
CRITICALITY CODE JUSTIFICATIONCRXX
HYDROSTATIC TEST PRESSURE300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
HHG101TYPE1Interchangeable
interchangeable cross-reference
interchangeable
5615Interchangeable
interchangeable cross-reference
interchangeable
16-633Interchangeable
interchangeable cross-reference
interchangeable
SM-B-525564-2Interchangeable
interchangeable cross-reference
interchangeable
1694-1-5Interchangeable
interchangeable cross-reference
interchangeable
1P230Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 16633-81?
16633-81 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 16633-81?
There are 19 known substitutes for 16633-81: HHG101TYPE1, 5615, 16-633 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 16633-81?
16633-81 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-041-1075. 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