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Technical Data Sheet
PartsTable / COMPONENT / S3-7-16-1-4
S3-7-16-1-4 ✓ 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,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, head_height: 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-270-4621, 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
S3-7-16-1-4
NSN: 4730-00-270-4621
FSC: 4730
CAGE: 18163 — EATON CORP CONTROLS DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
head_height0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
thread_length0.589 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN
fastener_length1.474 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN4730-00-270-4621
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S3-7-16-1-4 · 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 OVERALL LENGTH: 1.500 INCHES IN
•
SPECIFICATION/STANDARD DATA: 81343-512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
NONDEFINITIVE SPEC/STD DATA: 12A FIGURE A
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.438 INCHES FIRST END IN
•
MEDIA FOR WHICH DESIGNED: FLUID SECOND RESPONSE
•
MAXIMUM OPERATING TEMP: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
THREAD SERIES DESIGNATOR: NPTF SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.500 INCHES IN
SPECIFICATION/STANDARD DATA81343-512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION STYLEPLAIN (PIPE) SECOND END
NONDEFINITIVE SPEC/STD DATA12A FIGURE A
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.438 INCHES FIRST END IN
MEDIA FOR WHICH DESIGNEDFLUID SECOND RESPONSE
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD SERIES DESIGNATORNPTF SECOND END
FURNISHED ITEMS AND QUANTITY1 SHORT COUPLING NUT WITH SLEEVE
MATERIALCOPPER ALLOY 360 OR COPPER ALLOY 377 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
R1-597Interchangeable
interchangeable cross-reference
interchangeable
913009Interchangeable
interchangeable cross-reference
interchangeable
28888Interchangeable
interchangeable cross-reference
interchangeable
SAE-J512Interchangeable
interchangeable cross-reference
interchangeable
453B120Interchangeable
interchangeable cross-reference
interchangeable
3299Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S3-7-16-1-4?
S3-7-16-1-4 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace S3-7-16-1-4?
There are 24 known substitutes for S3-7-16-1-4: R1-597, 913009, 28888 and 21 more. Substitute compatibility should be verified for your specific system.
Is S3-7-16-1-4 still available?
S3-7-16-1-4 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