PartsTable
Technical Data Sheet
Download PDF

550-375-18-218 — PLUG,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

550-375-18-218: PLUG,PIPE.

The PLUG,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, connection_style: PLAIN, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, thread_series_designator: NPT EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-425-2104, 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
550-375-18-218
NSN: 4730-01-425-2104
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10941 — CARVER PUMP COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
connection_stylePLAIN
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
thread_series_designatorNPT EXTERNAL
NSN4730-01-425-2104
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 550-375-18-218 · 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
•
MATERIAL: STEEL COMP 316 OVERALL
•
THREAD SERIES DESIGNATOR: NPT EXTERNAL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALSTEEL COMP 316 OVERALL
THREAD SERIES DESIGNATORNPT EXTERNAL
SUBSTITUTES & CROSS-REFERENCES 2
999-1110-A-01 IT425Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
999-1110-A-01Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 550-375-18-218?
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 550-375-18-218?
550-375-18-218 is a PLUG,PIPE.
What parts can replace 550-375-18-218?
There are 2 known substitutes for 550-375-18-218: 999-1110-A-01 IT425, 999-1110-A-01. Substitute compatibility should be verified for your specific system.
What is the NSN for 550-375-18-218?
550-375-18-218 is cataloged in the U.S. Government catalog under NSN 4730-01-425-2104. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 550-375-18-218

✓ 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.