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850603 ✓ Verified by PartsTable
bluechip · 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,RECEPTACLE,ELECTRICAL. Key specifications include body_style: STRAIGHT SHAPE, thread_class: 2A A, overall_width: 0.360 INCHES NOMINAL IN, terminal_type: PIN SINGLE MATING END SINGLE CONTACT GROUPING, overall_height: 0.610 INCHES NOMINAL IN, overall_length: 4.300 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-371-4999, 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
850603
NSN: 4730-00-371-4999
FSC: 4730
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
body_styleSTRAIGHT SHAPE
thread_class2A A
overall_width0.360 INCHES NOMINAL IN
terminal_typePIN SINGLE MATING END SINGLE CONTACT GROUPING
overall_height0.610 INCHES NOMINAL IN
overall_length4.300 INCHES NOMINAL IN
insert_materialPLASTIC DIALLYL PHTHALATE SINGLE MATING END
contact_materialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
special_featuresCAPACITORS 5,DIODES 10,TERMINAL BOARD 1,TERMINALS 26
thread_directionRIGHT-HAND
precious_materialGOLD
terminal_locationBACK SINGLE MATING END SINGLE CONTACT GROUPING
NSN4730-00-371-4999
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 850603 · bluechip ⚠ 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
A155-264PC57Interchangeable
interchangeable cross-reference
interchangeable
57-2-4Interchangeable
interchangeable cross-reference
interchangeable
005724Interchangeable
interchangeable cross-reference
interchangeable
DEP37K-9074-HV2Interchangeable
interchangeable cross-reference
interchangeable
DEP37K-9074-JV2Interchangeable
interchangeable cross-reference
interchangeable
6204Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 850603?
850603 is a CONNECTOR,RECEPTACLE,ELECTRICAL manufactured by bluechip.
What parts can replace 850603?
There are 23 known substitutes for 850603: A155-264PC57, 57-2-4, 005724 and 20 more. Substitute compatibility should be verified for your specific system.
Is 850603 still available?
850603 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026