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21597-B — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21597-B: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, overall_length: 1.125 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT ALL ENDS, style_designator: MALE COUPLING HALF, surface_treatment: CHROMIUM BODY, quick_disconnect_method: PUSH-PULL ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-323-2445, 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
21597-B
NSN: 4730-01-323-2445
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 20266 — ELKHART BRASS MANUFACTURING COMPANY, LLC DIV ELKHART BRASS MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
overall_length1.125 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentCHROMIUM BODY
quick_disconnect_methodPUSH-PULL ALL ENDS
NSN4730-01-323-2445
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21597-B · 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
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
SURFACE TREATMENT: CHROMIUM BODY
•
MATERIAL: COPPER ALLOY BODY
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.125 INCHES NOMINAL IN
SURFACE TREATMENTCHROMIUM BODY
MATERIALCOPPER ALLOY BODY
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21597-B?
21597-B is a COUPLING HALF,QUICK DISCONNECT.
What is the NSN for 21597-B?
21597-B is cataloged in the U.S. Government catalog under NSN 4730-01-323-2445. 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.