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412-4637512 PC16 — CAP,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

412-4637512 PC16: CAP,TUBE.

The CAP,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 3A INTERNAL A, special_features: SELF-LOCKING, thread_direction: RIGHT-HAND EXTERNAL, nominal_thread_size: 2.000 INCHES EXTERNAL IN, end_item_identification: SSN 688 CLASS SUBMARINE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-372-7338, 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
412-4637512 PC16
NSN: 4730-01-372-7338
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class3A INTERNAL A
special_featuresSELF-LOCKING
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size2.000 INCHES EXTERNAL IN
end_item_identificationSSN 688 CLASS SUBMARINE
thread_quantity_per_inch8 EXTERNAL
thread_series_designatorUN EXTERNAL
material_document_and_classificationMIL-C-15725 SOFT TEMPER MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
tube_outside_diameter_for_which_designed2.500 INCHES NOMINAL IN
NSN4730-01-372-7338
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 412-4637512 PC16 · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-15725 SOFT TEMPER MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 2.000 INCHES EXTERNAL IN
•
THREAD CLASS: 3A INTERNAL A
•
THREAD QUANTITY PER INCH: 8 EXTERNAL
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-15725 SOFT TEMPER MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE2.000 INCHES EXTERNAL IN
SPECIAL FEATURESSELF-LOCKING
THREAD CLASS3A INTERNAL A
END ITEM IDENTIFICATIONSSN 688 CLASS SUBMARINE
THREAD QUANTITY PER INCH8 EXTERNAL
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUN EXTERNAL
SUBSTITUTES & CROSS-REFERENCES 2
4637512Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
97-37-317Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 412-4637512 PC16?
412-4637512 PC16 is a CAP,TUBE.
What parts can replace 412-4637512 PC16?
There are 2 known substitutes for 412-4637512 PC16: 4637512, 97-37-317. Substitute compatibility should be verified for your specific system.
What is the NSN for 412-4637512 PC16?
412-4637512 PC16 is cataloged in the U.S. Government catalog under NSN 4730-01-372-7338. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.