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Technical Data Sheet
202176REVDITEM23 ✓ 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: 0.688 INCHES NOMINAL IN, neck_height: 0.625 INCHES NOMINAL IN, flange_diameter: 3.812 INCHES NOMINAL IN, socket_diameter: 1.050 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-104-1997, 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
202176REVDITEM23
NSN: 4730-00-104-1997
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thickness0.688 INCHES NOMINAL IN
neck_height0.625 INCHES NOMINAL IN
flange_diameter3.812 INCHES NOMINAL IN
socket_diameter1.050 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
bolt_hole_diameter0.562 INCHES NOMINAL IN
bolt_hole_quantity4
bolt_circle_diameter2.688 INCHES NOMINAL IN
flange_section_stylePLAIN FACE, SOCKET BRAZING NECK
operating_pressure_and_type250.0 POUNDS PER SQUARE INCH (PSI) SALT WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
face_seating_surface_conditionSERRATED
NSN4730-00-104-1997
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 202176REVDITEM23 · 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
FACE SEATING SURFACE CONDITION: SERRATED
FLANGE SECTION STYLE: PLAIN FACE, SOCKET BRAZING NECK
BOLT HOLE DIAMETER: 0.562 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
BOLT HOLE QUANTITY: 4
NECK HEIGHT: 0.625 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
TECHNICAL CHARACTERISTICS (FLIS)
FACE SEATING SURFACE CONDITIONSERRATED
FLANGE SECTION STYLEPLAIN FACE, SOCKET BRAZING NECK
BOLT HOLE DIAMETER0.562 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.750 INCHES IN
BOLT HOLE QUANTITY4
NECK HEIGHT0.625 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE250.0 POUNDS PER SQUARE INCH (PSI) SALT WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
SOCKET DIAMETER1.050 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
FIG5181-150Interchangeable
Same NIIN cross-reference
interchangeable
MIL-F-20042Interchangeable
Same NIIN cross-reference
interchangeable
MIL-PRF-20042Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 202176REVDITEM23?
202176REVDITEM23 is a HEATING ELEMENT,ELECTRICAL,IMMER.
What parts can replace 202176REVDITEM23?
There are 3 known substitutes for 202176REVDITEM23: FIG5181-150, MIL-F-20042, MIL-PRF-20042. Substitute compatibility should be verified for your specific system.
What is the NSN for 202176REVDITEM23?
202176REVDITEM23 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-104-1997. This indicates validated use in U.S. government and defense supply chains.
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