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Technical Data Sheet
PartsTable / COMPONENT / 0503-8-4
0503-8-4 ✓ 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 BOSS is a the manufacturer industrial component. Key specifications include special_features: USER MANUAL FOR MODEL 5000 TEG AND VERSION 4 TEG ENABLED AND TEG REMOTE SOFTWARE, end_item_identification: ANALYZER,HEMOSTASIS, NSN: 6640-01-528-5195, part_name_assigned_by_controlling_agency: MANUAL USER F/TEG 5000 HEMOSTASIS ANALYZER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-212-5775, 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
0503-8-4
NSN: 4730-01-212-5775
FSC: 4730
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
special_featuresUSER MANUAL FOR MODEL 5000 TEG AND VERSION 4 TEG ENABLED AND TEG REMOTE SOFTWARE
end_item_identificationANALYZER,HEMOSTASIS, NSN: 6640-01-528-5195
part_name_assigned_by_controlling_agencyMANUAL USER F/TEG 5000 HEMOSTASIS ANALYZER
NSN4730-01-212-5775
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 0503-8-4 · 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
•
NOMINAL THREAD SIZE: 0.750 INCHES SECOND END IN
•
CONNECTION STYLE: FLARED (TUBE) FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
THREAD SERIES DESIGNATOR: UNF FIRST END
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 3B FIGURE
•
FURNISHED ITEMS AND QUANTITY: 1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.750 INCHES SECOND END IN
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
THREAD SERIES DESIGNATORUNF FIRST END
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA3B FIGURE
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
FURNISHED ITEMS AND QUANTITY1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
SEAT ANGLE37.0 DEGREES FIRST END
SPECIFICATION/STANDARD DATA81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
434990Interchangeable
interchangeable cross-reference
interchangeable
SAE J514/1 12-8 070120SAInterchangeable
interchangeable cross-reference
interchangeable
SAE J514 12-8 070120SAInterchangeable
interchangeable cross-reference
interchangeable
12-8 070120SAInterchangeable
interchangeable cross-reference
interchangeable
HT4024L7-9MInterchangeable
interchangeable cross-reference
interchangeable
05-0384Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0503-8-4?
0503-8-4 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 0503-8-4?
There are 16 known substitutes for 0503-8-4: 434990, SAE J514/1 12-8 070120SA, SAE J514 12-8 070120SA and 13 more. Substitute compatibility should be verified for your specific system.
Is 0503-8-4 still available?
0503-8-4 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