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Technical Data Sheet
PartsTable / COMPONENT / 188353-1
188353-1 ✓ 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

CONNECTOR,MULTIPLE,FLUID PRESSUR. Key specifications include material: STEEL COMP 316 OR STEEL COMP 304, thread_size: 9/16 IN.-18 LOCATION NOT OTHERWISE SPECIFIED IN, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, overall_width: 1.380 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN, overall_length: 2.225 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN, connection_style: PLAIN SECOND CONNECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-028-2256, 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
188353-1
NSN: 4730-01-028-2256
FSC: 4730
CAGE: 24930 — L3HARRIS TECHNOLOGIES, INC DIV SPACE & AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OR STEEL COMP 304
thread_size9/16 IN.-18 LOCATION NOT OTHERWISE SPECIFIED IN
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
overall_width1.380 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
overall_length2.225 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
connection_stylePLAIN SECOND CONNECTION
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED FIRST CONNECTION
deg_between_outlets90.0
fluid_connection_quantity1 SECOND CONNECTION
bolt_hole_flats_serrationsNOT PROVIDED
second_deg_between_outlets90.0
NSN4730-01-028-2256
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 188353-1 · 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
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
THREAD SIZE: 9/16 IN.-18 LOCATION NOT OTHERWISE SPECIFIED IN
•
CONNECTION STYLE: PLAIN SECOND CONNECTION
•
FLUID CONNECTION QUANTITY: 2 FIRST CONNECTION
•
THREAD CLASS: 3A LOCATION NOT OTHERWISE SPECIFIED A
•
DEG BETWEEN OUTLETS: 90.0
•
THREAD PROVISION: UNTHREADED SECOND CONNECTION
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD SIZE9/16 IN.-18 LOCATION NOT OTHERWISE SPECIFIED IN
CONNECTION STYLEPLAIN SECOND CONNECTION
FLUID CONNECTION QUANTITY2 FIRST CONNECTION
THREAD CLASS3A LOCATION NOT OTHERWISE SPECIFIED A
CONNECTION STYLEFLARED FIRST CONNECTION
DEG BETWEEN OUTLETS90.0
THREAD PROVISIONUNTHREADED SECOND CONNECTION
SECOND DEG BETWEEN OUTLETS90.0
OVERALL LENGTH2.225 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
21751Interchangeable
interchangeable cross-reference
interchangeable
44-502-1Interchangeable
interchangeable cross-reference
interchangeable
24JS118-1Interchangeable
interchangeable cross-reference
interchangeable
8050-1Interchangeable
interchangeable cross-reference
interchangeable
QQB575R30T0656Interchangeable
interchangeable cross-reference
interchangeable
QQB575R36T625Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 188353-1?
188353-1 is a CONNECTOR,MULTIPLE,FLUID PRESSUR.
What parts can replace 188353-1?
There are 17 known substitutes for 188353-1: 21751, 44-502-1, 24JS118-1 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 188353-1?
188353-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-028-2256. 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