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2000557 — CYLINDER ASSEMBLY,REACTION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2000557: CYLINDER ASSEMBLY,REACTION.

The CYLINDER ASSEMBLY,REACTION is a the manufacturer industrial component. Key specifications include special_features: STRUT, HATCH, end_item_identification: 2355-01-532-2174 JOINT EOD RAPID RESPONSE VEHICLE (JERRV)/MRAP. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-121-5949, 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
2000557
NSN: 4730-00-121-5949
NIINs: 001215949, 015530885
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 27742 — ALL-BANN ENTERPRISES INC (USA)
SPECIFICATIONS
special_featuresSTRUT, HATCH
end_item_identification2355-01-532-2174 JOINT EOD RAPID RESPONSE VEHICLE (JERRV)/MRAP
NSN4730-00-121-5949
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2000557 · 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
•
CONNECTION STYLE: PLAIN ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
QUICK DISCONNECT NOMINAL SIZE: 2.000 INCHES ALL ENDS IN
•
LEG LENGTH: 0.859 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.000 INCHES ALL ENDS IN
•
SURFACE TREATMENT: ANODIZE BODY
•
MATERIAL: ALUMINUM ALLOY BODY
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH2.468 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE2.000 INCHES ALL ENDS IN
LEG LENGTH0.859 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.000 INCHES ALL ENDS IN
SURFACE TREATMENTANODIZE BODY
MATERIALALUMINUM ALLOY BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 1
633AX2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2000557?
2000557 is a CYLINDER ASSEMBLY,REACTION.
What parts can replace 2000557?
There is 1 known substitute for 2000557: 633AX2. Substitute compatibility should be verified for your specific system.
What is the NSN for 2000557?
2000557 is cataloged in the U.S. Government catalog under NSN 4730-00-121-5949. 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.