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ST7M421 — PLUG,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST7M421: PLUG,QUICK DISCONNECT.

The PLUG,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, overall_length: 0.800 INCHES NOMINAL IN, special_features: POLARIZED, surface_treatment: ANODIZE BODY, operating_pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, maximum_operating_temp: 275.0 FAHRENHEIT DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-119-6925, 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
ST7M421
NSN: 4730-01-119-6925
NIINs: 011196925, 011233837
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
overall_length0.800 INCHES NOMINAL IN
special_featuresPOLARIZED
surface_treatmentANODIZE BODY
operating_pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
maximum_operating_temp275.0 FAHRENHEIT DEGF
quick_disconnect_methodPUSH-PULL
media_for_which_designedHYDRAULIC FLUID, SILICATE-ESTER BASE
quick_disconnect_nominal_size0.750 INCHES IN
material_document_and_classificationQQ-A-22516 FED SPEC SINGLE MATERIAL RESPONSE BODY
surface_treatment_document_and_classificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
NSN4730-01-119-6925
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST7M421 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-22516 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
QUICK DISCONNECT NOMINAL SIZE: 0.750 INCHES IN
•
SURFACE TREATMENT: ANODIZE BODY
•
MATERIAL: ALUMINUM ALLOY BODY
•
QUICK DISCONNECT METHOD: PUSH-PULL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-22516 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH0.800 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE0.750 INCHES IN
SPECIAL FEATURESPOLARIZED
SURFACE TREATMENTANODIZE BODY
MATERIALALUMINUM ALLOY BODY
QUICK DISCONNECT METHODPUSH-PULL
SUBSTITUTES & CROSS-REFERENCES 2
10108566Reference document
Same NSN cross-reference
Reference document — Informative reference only
ST7M421-8-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 ST7M421?
ST7M421 is a PLUG,QUICK DISCONNECT.
What parts can replace ST7M421?
There are 2 known substitutes for ST7M421: 10108566, ST7M421-8-2. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M421?
ST7M421 is cataloged in the U.S. Government catalog under NSN 4730-01-119-6925. 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.