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Technical Data Sheet
PartsTable / COMPONENT / 44Z689D2
44Z689D2 ✓ 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

COUPLING ASSEMBLY,QUICK DISCONNE. Key specifications include material: STEEL OVERALL, leg_length: 0.430 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, overall_length: 2.500 INCHES MINIMUM AND 2.520 INCHES MAXIMUM IN, connection_style: PLAIN FIRST FLUID END CONNECTION, special_features: SUPPORTS HARNISCHFEGER CORP.;MODEL M320T2,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431, style_designator: COUPLING ASSEMBLY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-068-6553, 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
44Z689D2
NSN: 4730-00-068-6553
FSC: 4730
CAGE: 27315 — MORRIS MATERIAL HANDLING, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length0.430 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
overall_length2.500 INCHES MINIMUM AND 2.520 INCHES MAXIMUM IN
connection_stylePLAIN FIRST FLUID END CONNECTION
special_featuresSUPPORTS HARNISCHFEGER CORP.;MODEL M320T2,CRANE TRUCK MOUNTED,NSN 3810-00-151-4431
style_designatorCOUPLING ASSEMBLY
features_providedSELF-SEALING
surface_treatmentZINC OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.250 INCHES FIRST FLUID END CONNECTION IN
quick_disconnect_methodSPRING PUSH-PULL ALL ENDS
thread_series_designatorNPT FIRST FLUID END CONNECTION
NSN4730-00-068-6553
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 44Z689D2 · 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
•
SURFACE TREATMENT: ZINC OVERALL
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.250 INCHES FIRST FLUID END CONNECTION IN
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: NPT FIRST FLUID END CONNECTION
•
LEG LENGTH: 0.430 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH2.500 INCHES MINIMUM AND 2.520 INCHES MAXIMUM IN
SURFACE TREATMENTZINC OVERALL
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.250 INCHES FIRST FLUID END CONNECTION IN
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT FIRST FLUID END CONNECTION
LEG LENGTH0.430 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
FEATURES PROVIDEDSELF-SEALING
CONNECTION STYLEPLAIN FIRST FLUID END CONNECTION
QUICK DISCONNECT NOMINAL SIZE0.562 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
2030-789Interchangeable
interchangeable cross-reference
interchangeable
16FM18C7-32Interchangeable
interchangeable cross-reference
interchangeable
7-32BALLGRADE2Interchangeable
interchangeable cross-reference
interchangeable
R98637Interchangeable
interchangeable cross-reference
interchangeable
40002Interchangeable
interchangeable cross-reference
interchangeable
803808Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 44Z689D2?
44Z689D2 is a COUPLING ASSEMBLY,QUICK DISCONNE.
What parts can replace 44Z689D2?
There are 27 known substitutes for 44Z689D2: 2030-789, 16FM18C7-32, 7-32BALLGRADE2 and 24 more. Substitute compatibility should be verified for your specific system.
Is 44Z689D2 still available?
44Z689D2 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