PartsTable
Technical Data Sheet
2670-57 PC9 ✓ 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 COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: STEEL BODY, thread_class: 2B ALL ENDS, overall_length: 1.370 INCHES NOMINAL IN, connection_type: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: BOSS GASKET SEAL ALL ENDS, special_features: FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-180-0926, 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
2670-57 PC9
NSN: 4730-01-180-0926
FSC: 4730
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialSTEEL BODY
thread_class2B ALL ENDS
overall_length1.370 INCHES NOMINAL IN
connection_typeTHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleBOSS GASKET SEAL ALL ENDS
special_featuresFOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentZINC OR CADMIUM BODY
operating_pressure1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
NSN4730-01-180-0926
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2670-57 PC9 · 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
OPERATING PRESSURE: 1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
SURFACE TREATMENT: ZINC OR CADMIUM BODY
THREAD SERIES DESIGNATOR: UNF ALL ENDS
FEATURES PROVIDED: SELF-SEALING
THREAD CLASS: 2B ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SURFACE TREATMENTZINC OR CADMIUM BODY
SPECIAL FEATURESFOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY
THREAD SERIES DESIGNATORUNF ALL ENDS
FEATURES PROVIDEDSELF-SEALING
THREAD CLASS2B ALL ENDS
OVERALL LENGTH1.370 INCHES NOMINAL IN
CONNECTION TYPETHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION STYLEBOSS GASKET SEAL ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
16-00-8305Interchangeable
interchangeable cross-reference
interchangeable
845-2445071ITEM9Interchangeable
interchangeable cross-reference
interchangeable
5400-S2-8Interchangeable
interchangeable cross-reference
interchangeable
267057Interchangeable
interchangeable cross-reference
interchangeable
DD19CA061Interchangeable
interchangeable cross-reference
interchangeable
NFT5-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2670-57 PC9?
2670-57 PC9 is a COUPLING HALF,SELF-SEALING.
What parts can replace 2670-57 PC9?
There are 25 known substitutes for 2670-57 PC9: 16-00-8305, 845-2445071ITEM9, 5400-S2-8 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2670-57 PC9?
2670-57 PC9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-180-0926. This indicates validated use in U.S. government and defense supply chains.
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