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803749-3 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

803749-3: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, flange_width: 0.0615 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN, overall_length: 0.4260 INCHES NOMINAL IN, body_inside_diameter: 0.8060 INCHES MINIMUM AND 0.8075 INCHES MAXIMUM IN, body_outside_diameter: 0.9388 INCHES MINIMUM AND 0.9395 INCHES MAXIMUM IN, flange_outside_diameter: 1.1190 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-090-4938, 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
803749-3
NSN: 4730-01-090-4938
NIINs: 010904938, 012877657
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
flange_width0.0615 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN
overall_length0.4260 INCHES NOMINAL IN
body_inside_diameter0.8060 INCHES MINIMUM AND 0.8075 INCHES MAXIMUM IN
body_outside_diameter0.9388 INCHES MINIMUM AND 0.9395 INCHES MAXIMUM IN
flange_outside_diameter1.1190 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
NSN4730-01-090-4938
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 803749-3 · 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
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE BODY
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CONNECTION STYLE: FLARED ALL ENDS
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CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
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STYLE DESIGNATOR: MALE COUPLING HALF
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MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION STYLEFLARED ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
CONNECTION TYPEINTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH1.856 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH1.016 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SUBSTITUTES & CROSS-REFERENCES 1
2104-04F-S0Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 803749-3?
803749-3 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 803749-3?
There is 1 known substitute for 803749-3: 2104-04F-S0. Substitute compatibility should be verified for your specific system.
What is the NSN for 803749-3?
803749-3 is cataloged in the U.S. Government catalog under NSN 4730-01-090-4938. This indicates validated use in U.S. government and defense supply chains.
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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.