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R74-4 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R74-4: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE, sterility: STERILE, body_shape: OVAL, body_style: CYLINDRICAL SERVO MOUNTED, cone_width: 1.8375 INCHES NOMINAL IN, body_length: 1.040 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-595-0083, 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
R74-4
NSN: 4730-00-595-0083
NIINs: 005950083, 013390706
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 51501 — ROGERS BROTHERS CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
sterilitySTERILE
body_shapeOVAL
body_styleCYLINDRICAL SERVO MOUNTED
cone_width1.8375 INCHES NOMINAL IN
body_length1.040 INCHES MAXIMUM IN
design_typeDRY
shaft_styleROUND, SLOTTED
bearing_typeBALL SHAFT
coolant_typeAIR
groove_width0.093 INCHES NOMINAL IN
pilot_length0.0620 INCHES NOMINAL IN
NSN4730-00-595-0083
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R74-4 · 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
SUBSTITUTES & CROSS-REFERENCES 9
MN1202CReference document
Same NSN cross-reference
Reference document — Secondary reference
N1202CReference document
Same NSN cross-reference
Reference document — Secondary reference
MS35746-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
891901Reference document
Same NSN cross-reference
Reference document — Secondary reference
74-9Reference document
Same NSN cross-reference
Reference document — Secondary reference
900280Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R74-4?
R74-4 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace R74-4?
There are 9 known substitutes for R74-4: MN1202C, N1202C, MS35746-1 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R74-4?
R74-4 is cataloged in the U.S. Government catalog under NSN 4730-00-595-0083. 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.