PartsTable
Technical Data Sheet
Download PDF

7HB504 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7HB504: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include leg_length: 1.580 INCHES NOMINAL IN, style_designator: MALE COUPLING HALF, end_item_identification: USE ON MK25, MK28, MK30, part_name_assigned_by_controlling_agency: COUPLING QUICK DISCONNECT-DGNSTC-NO. 4M-VLVD.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-479-2348, 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
7HB504
NSN: 4730-01-479-2348
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
leg_length1.580 INCHES NOMINAL IN
style_designatorMALE COUPLING HALF
end_item_identificationUSE ON MK25, MK28, MK30
part_name_assigned_by_controlling_agencyCOUPLING QUICK DISCONNECT-DGNSTC-NO. 4M-VLVD
NSN4730-01-479-2348
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7HB504 · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 1.580 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORMALE COUPLING HALF
LEG LENGTH1.580 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCOUPLING QUICK DISCONNECT-DGNSTC-NO. 4M-VLVD
END ITEM IDENTIFICATIONUSE ON MK25, MK28, MK30
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 1
70105-GSame 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
Ready to buy 7HB504?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 7HB504?
7HB504 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 7HB504?
There is 1 known substitute for 7HB504: 70105-G. Substitute compatibility should be verified for your specific system.
What is the NSN for 7HB504?
7HB504 is cataloged in the U.S. Government catalog under NSN 4730-01-479-2348. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 7HB504

✓ 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.