PartsTable
Technical Data Sheet
PartsTable / MRO / 634B
634B ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, part_name_assigned_by_controlling_agency: DUST CAP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-360-0716, 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
MRO→ MRO_GENERAL→ 634B
NSN: 4730-00-360-0716
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
part_name_assigned_by_controlling_agencyDUST CAP
NSN4730-00-360-0716
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 634B · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
1620Interchangeable
interchangeable cross-reference
interchangeable
A1620Interchangeable
interchangeable cross-reference
interchangeable
SA1720Interchangeable
interchangeable cross-reference
interchangeable
25606Interchangeable
interchangeable cross-reference
interchangeable
6265Interchangeable
interchangeable cross-reference
interchangeable
MILV20064Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 634B?
634B is a COUPLING HALF,QUICK DISCONNECT. It is classified as a MRO (MRO_GENERAL).
What parts can replace 634B?
There are 25 known substitutes for 634B: 1620, A1620, SA1720 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 634B?
634B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-360-0716. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026