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SS845-1889794 — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SS845-1889794: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, design_type: STRAIGHT, connection_type: FLANGE, ROUND W/HOLES, flange_diameter: 5.563 INCHES IN, operating_pressure: 650.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, valve_size_for_which_designed: 2.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-058-5534, 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
SS845-1889794
NSN: 4730-01-058-5534
NIINs: 010585534, 011996673
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
design_typeSTRAIGHT
connection_typeFLANGE, ROUND W/HOLES
flange_diameter5.563 INCHES IN
operating_pressure650.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
valve_size_for_which_designed2.000 INCHES IN
valve_model_number_for_which_designedSS845-1889794
NSN4730-01-058-5534
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SS845-1889794 · 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
•
HOLE OR SLOT QUANTITY: 2
•
THREAD LENGTH: 0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND SLOTTED, EXTERNAL THREAD, BOSS
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 1-3/8-16
•
SCREW THREAD SERIES DESIGNATOR: UN
TECHNICAL CHARACTERISTICS
HOLE OR SLOT QUANTITY2
THREAD LENGTH0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
STYLE DESIGNATORROUND SLOTTED, EXTERNAL THREAD, BOSS
OVERALL LENGTH0.438 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE1-3/8-16
SCREW THREAD SERIES DESIGNATORUN
THREAD CLASS2A A
MAJOR UNTHREADED OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
SS845-1889794REReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SS845-1889794REVEPC8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1889794PC8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SS845-1889794?
SS845-1889794 is a PACKING NUT.
What parts can replace SS845-1889794?
There are 3 known substitutes for SS845-1889794: SS845-1889794RE, SS845-1889794REVEPC8, 1889794PC8. Substitute compatibility should be verified for your specific system.
What is the NSN for SS845-1889794?
SS845-1889794 is cataloged in the U.S. Government catalog under NSN 4730-01-058-5534. 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.