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511-4684516 — NUT,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

511-4684516: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY AND NICKEL ALLOY OVERALL, nut_style: HEXAGON, seat_type: GASKET, nut_height: 1.188 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-149-6693, 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
511-4684516
NSN: 4730-01-149-6693
NIINs: 011496693, 011496795
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY AND NICKEL ALLOY OVERALL
nut_styleHEXAGON
seat_typeGASKET
nut_height1.188 INCHES NOMINAL IN
thread_class2B
thread_seriesUNS
overall_length1.440 INCHES NOMINAL IN
shoulder_width0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats2.563 INCHES NOMINAL IN
end_connection_typeWELDED
nominal_thread_size2.312 INCHES IN
NSN4730-01-149-6693
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 511-4684516 · 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
•
WIDTH ACROSS FLATS: 2.563 INCHES NOMINAL IN
•
SHOULDER STEP WIDTH: 0.250 INCHES NOMINAL IN
•
SHOULDER WIDTH: 0.250 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
THREAD PITCH DIAMETERS: +2.2175 TO 2.2239 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MAXIMUM WORKING PRESSURE RATING AND SERVICE FOR WHICH DESIGNED: 3000.0 POUNDS PER SQUARE INCH (PSI) OIL AND 3000.0 POUNDS PER SQUARE INCH (PSI) WATER LBS
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.563 INCHES NOMINAL IN
SHOULDER STEP WIDTH0.250 INCHES NOMINAL IN
SHOULDER WIDTH0.250 INCHES NOMINAL IN
THREAD SERIESUNS
THREAD PITCH DIAMETERS+2.2175 TO 2.2239 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MAXIMUM WORKING PRESSURE RATING AND SERVICE FOR WHICH DESIGNED3000.0 POUNDS PER SQUARE INCH (PSI) OIL AND 3000.0 POUNDS PER SQUARE INCH (PSI) WATER LBS
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.312 INCHES IN
NUT HEIGHT1.188 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
511-4684516 ITEM F24Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
810-1385943Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
810-1385943 PIEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
803-1385943 PIEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 511-4684516?
511-4684516 is a NUT,UNION.
What parts can replace 511-4684516?
There are 4 known substitutes for 511-4684516: 511-4684516 ITEM F24, 810-1385943, 810-1385943 PIE and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 511-4684516?
511-4684516 is cataloged in the U.S. Government catalog under NSN 4730-01-149-6693. 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.