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GN521C — NOZZLE,SPRAY,FLUID-EMULSION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GN521C: NOZZLE,SPRAY,FLUID-EMULSION.

The NOZZLE,SPRAY,FLUID-EMULSION is a the manufacturer industrial component. Key specifications include special_features: STEEL;1.875 IN. LG;1.00 IN.

W ACROSS FLATS;THD FEMALE INLET CONNECTION;USED WITH 0.500 IN. NOM PIPE SIZE IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-321-9983, 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
GN521C
NSN: 4730-01-321-9983
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
special_featuresSTEEL;1.875 IN. LG;1.00 IN. W ACROSS FLATS;THD FEMALE INLET CONNECTION;USED WITH 0.500 IN. NOM PIPE SIZE IN
NSN4730-01-321-9983
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GN521C · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSTEEL;1.875 IN. LG;1.00 IN. W ACROSS FLATS;THD FEMALE INLET CONNECTION;USED WITH 0.500 IN. NOM PIPE SIZE IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
GN521C2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1/2G-32 FULLJETReference 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 GN521C?
GN521C is a NOZZLE,SPRAY,FLUID-EMULSION.
What parts can replace GN521C?
There are 2 known substitutes for GN521C: GN521C2, 1/2G-32 FULLJET. Substitute compatibility should be verified for your specific system.
What is the NSN for GN521C?
GN521C is cataloged in the U.S. Government catalog under NSN 4730-01-321-9983. This indicates validated use in U.S. government and defense supply chains.
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