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Technical Data Sheet
PartsTable / COMPONENT / 12553583
12553583 ✓ Verified by PartsTable
— · HOSE FITTING
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: ALUMINUM ALLOY BODY, leg_length: 1.250 INCHES NOMINAL IN, overall_length: 6.500 INCHES NOMINAL IN, connection_type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION, connection_style: BEADED ALL ENDS, style_designator: MALE COUPLING HALF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-355-5975, 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
12553583
NSN: 4730-01-355-5975
FSC: 4730
CAGE: 0XPW2 — UNITED DEFENSE, LP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length1.250 INCHES NOMINAL IN
overall_length6.500 INCHES NOMINAL IN
connection_typeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
connection_styleBEADED ALL ENDS
style_designatorMALE COUPLING HALF
quick_disconnect_methodPUSH-PULL ALL ENDS
nominal_inside_diameter_hose_accommodated2.250 INCHES ALL ENDS IN
NSN4730-01-355-5975
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12553583 · 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
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
LEG LENGTH: 1.250 INCHES NOMINAL IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 2.250 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
CONNECTION STYLE: BEADED ALL ENDS
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
•
MATERIAL: ALUMINUM ALLOY BODY
TECHNICAL CHARACTERISTICS (FLIS)
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
LEG LENGTH1.250 INCHES NOMINAL IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED2.250 INCHES ALL ENDS IN
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION STYLEBEADED ALL ENDS
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
OVERALL LENGTH6.500 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
51124Interchangeable
interchangeable cross-reference
interchangeable
051124Interchangeable
interchangeable cross-reference
interchangeable
2614183-1Interchangeable
interchangeable cross-reference
interchangeable
51124MInterchangeable
interchangeable cross-reference
interchangeable
GBT 2614183Interchangeable
interchangeable cross-reference
interchangeable
S220864Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12553583?
12553583 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 12553583?
There are 12 known substitutes for 12553583: 51124, 051124, 2614183-1 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12553583?
12553583 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-355-5975. 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