PartsTable
Technical Data Sheet

634A-2-1/2AL — PLUG,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

634A-2-1/2AL: PLUG,QUICK DISCONNECT.

The PLUG,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 3.00 INCHES MAXIMUM IN, overall_length: 1.87 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT, special_features: COUPLING SIZE 3", style_designator: CAP. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-254-0217, 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
634A-2-1/2AL
NSN: 4730-01-254-0217
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length3.00 INCHES MAXIMUM IN
overall_length1.87 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT
special_featuresCOUPLING SIZE 3"
style_designatorCAP
end_item_identification2330-01-580-7654
quick_disconnect_methodCAM-LOCKING
specification/standard_dataMS27029 GOVERNMENT STANDARD
part_name_assigned_by_controlling_agencyCOUPLING HALF, PLUG, DUST, TYPE X
NSN4730-01-254-0217
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 634A-2-1/2AL · 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 7
AA59326/11-7-ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A-A-59326/11Reference document
Same NSN cross-reference
Reference document — Identification reference
634A-2.5ALReference document
Same NSN cross-reference
Reference document — Secondary reference
1003677Reference document
Same NSN cross-reference
Reference document — Secondary reference
634-A-2 1/2IN-ALReference document
Same NSN cross-reference
Reference document — Secondary reference
MS27029-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 634A-2-1/2AL?
634A-2-1/2AL is a PLUG,QUICK DISCONNECT.
What parts can replace 634A-2-1/2AL?
There are 7 known substitutes for 634A-2-1/2AL: AA59326/11-7-A, A-A-59326/11, 634A-2.5AL and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 634A-2-1/2AL?
634A-2-1/2AL is cataloged in the U.S. Government catalog under NSN 4730-01-254-0217. 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.