PartsTable
Technical Data Sheet
320-5-4ZK ✓ 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

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: IRON OR STEEL OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-074-7544, 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
320-5-4ZK
NSN: 4730-01-074-7544
FSC: 4730
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialIRON OR STEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
surface_treatmentZINC OVERALL
operating_pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.500 INCHES FIRST END IN
maximum_operating_temp212.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length2.940 INCHES IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNF FIRST END
NSN4730-01-074-7544
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 320-5-4ZK · 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
SEAT ANGLE: 37.0 DEGREES FIRST END
THREAD SERIES DESIGNATOR: UNF FIRST END
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
SPECIFICATION/STANDARD DATA: 81349-MIL-F-52525C GOVERNMENT SPECIFICATION
NOMINAL THREAD SIZE: 0.500 INCHES FIRST END IN
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.312 INCHES FIRST END IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE37.0 DEGREES FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SPECIFICATION/STANDARD DATA81349-MIL-F-52525C GOVERNMENT SPECIFICATION
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES FIRST END IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING NUT
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MIL-DTL-52525/1Interchangeable
interchangeable cross-reference
interchangeable
MS39290-8-8BInterchangeable
interchangeable cross-reference
interchangeable
M52525/1-8-8Interchangeable
interchangeable cross-reference
interchangeable
4721-6Interchangeable
interchangeable cross-reference
interchangeable
4721-12Interchangeable
interchangeable cross-reference
interchangeable
4721-12SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 320-5-4ZK?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 320-5-4ZK?
320-5-4ZK is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 320-5-4ZK?
There are 21 known substitutes for 320-5-4ZK: MIL-DTL-52525/1, MS39290-8-8B, M52525/1-8-8 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 320-5-4ZK?
320-5-4ZK is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-074-7544. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 320-5-4ZK