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Technical Data Sheet
PartsTable / COMPONENT / 5179-300
5179-300 ✓ 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

HEATING ELEMENT,ELECTRICAL,IMMER. Key specifications include material: COPPER ALLOY, thickness: 0.812 INCHES NOMINAL IN, neck_height: 0.938 INCHES NOMINAL IN, groove_depth: 0.125 INCHES NOMINAL IN, groove_width: 0.250 INCHES NOMINAL IN, flange_diameter: 5.937 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-024-7701, 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
5179-300
NSN: 4730-01-024-7701
FSC: 4730
CAGE: 72423 — FLAGG STANLEY G & CO INC DBA FLAGG BRASS (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thickness0.812 INCHES NOMINAL IN
neck_height0.938 INCHES NOMINAL IN
groove_depth0.125 INCHES NOMINAL IN
groove_width0.250 INCHES NOMINAL IN
flange_diameter5.937 INCHES NOMINAL IN
style_designatorROUND, NO BOLT HOLES
flange_section_stylePLAIN FACE, BRAZING NECK
groove_pitch_diameter2.025 INCHES NOMINAL IN
nondefinitive_spec/std_dataPR TYPE
departure_from_cited_documentFLANGE IS UNDRILLED
face_seating_surface_conditionSERRATED
NSN4730-01-024-7701
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5179-300 · 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
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER DEGF
•
GROOVE DEPTH: 0.125 INCHES NOMINAL IN
•
DEPARTURE FROM CITED DOCUMENT: FLANGE IS UNDRILLED
•
FACE SEATING SURFACE CONDITION: SERRATED
•
OPERATING PRESSURE AND TYPE: 400.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
NONDEFINITIVE SPEC/STD DATA: PR TYPE
•
MATERIAL: COPPER ALLOY
•
FLANGE SECTION STYLE: PLAIN FACE, BRAZING NECK
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED425.0 FAHRENHEIT STEAM AND 425.0 FAHRENHEIT GAS AND 425.0 FAHRENHEIT OIL AND 425.0 FAHRENHEIT WATER DEGF
GROOVE DEPTH0.125 INCHES NOMINAL IN
DEPARTURE FROM CITED DOCUMENTFLANGE IS UNDRILLED
FACE SEATING SURFACE CONDITIONSERRATED
OPERATING PRESSURE AND TYPE400.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 400.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
NONDEFINITIVE SPEC/STD DATAPR TYPE
MATERIALCOPPER ALLOY
FLANGE SECTION STYLEPLAIN FACE, BRAZING NECK
STYLE DESIGNATORROUND, NO BOLT HOLES
THICKNESS0.812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
CS4730-0108Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-20042Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-20042Interchangeable
interchangeable cross-reference
interchangeable
5-1304SPInterchangeable
interchangeable cross-reference
interchangeable
R1304BFInterchangeable
interchangeable cross-reference
interchangeable
18-4625AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5179-300?
5179-300 is a HEATING ELEMENT,ELECTRICAL,IMMER.
What parts can replace 5179-300?
There are 21 known substitutes for 5179-300: CS4730-0108, MIL-F-20042, MIL-PRF-20042 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5179-300?
5179-300 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-024-7701. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026