PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 74B550051-101
74B550051-101 ✓ 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 6061 OVERALL, overall_width: 0.870 INCHES NOMINAL IN, overall_height: 4.750 INCHES NOMINAL IN, first_end_style: SQUARE, overall_diameter: 2.120 INCHES NOMINAL IN, pin_overall_length: 1.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-118-9788, 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
74B550051-101
NSN: 4730-01-118-9788
FSC: 4730
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
overall_width0.870 INCHES NOMINAL IN
overall_height4.750 INCHES NOMINAL IN
first_end_styleSQUARE
overall_diameter2.120 INCHES NOMINAL IN
pin_overall_length1.500 INCHES NOMINAL IN
first_hole_diameter0.170 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
pin_overall_diameter0.3650 INCHES MINIMUM AND 0.3670 INCHES MAXIMUM IN
second_hole_diameter0.170 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
hole_arrangement_styleBOTH END DRILLED
end_item_identification7360-01-599-1956
material_document_and_classificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-01-118-9788
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 74B550051-101 · 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 7
32400Interchangeable
interchangeable cross-reference
interchangeable
992369Interchangeable
interchangeable cross-reference
interchangeable
KFM-2/AInterchangeable
interchangeable cross-reference
interchangeable
17213LGInterchangeable
interchangeable cross-reference
interchangeable
10108559Interchangeable
Same NIIN cross-reference
interchangeable
32400-115Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 74B550051-101?
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 74B550051-101?
74B550051-101 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 74B550051-101?
There are 7 known substitutes for 74B550051-101: 32400, 992369, KFM-2/A and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 74B550051-101?
74B550051-101 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-118-9788. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 74B550051-101

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026