PartsTable
Technical Data Sheet
Download PDF

MS51532B4SD4 — CAP,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS51532B4SD4: CAP,TUBE.

The CAP,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, seat_angle: 37.0 DEGREES, thread_class: 2B INTERNAL, connection_style: FLARE, style_designator: CAP, thread_direction: RIGHT-HAND INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-642-5863, 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
MS51532B4SD4
NSN: 4730-01-642-5863
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
seat_angle37.0 DEGREES
thread_class2B INTERNAL
connection_styleFLARE
style_designatorCAP
thread_directionRIGHT-HAND INTERNAL
operating_pressure9000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
nominal_thread_size0.4375 INCHES INTERNAL IN
maximum_operating_temp100.0 FAHRENHEIT DEGF
end_item_identificationV-22 AIRCRAFT
thread_quantity_per_inch20 INTERNAL
thread_series_designatorUNF INTERNAL
NSN4730-01-642-5863
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51532B4SD4 · 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 9
516-8500418 ITEM F49Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
516-5486648 ITEM F183Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
4FNTX-SSD4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
516-5486653 ITEM F94D4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
516-5486648 ITEM F183D4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
516-8500418 ITEM F49D4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy MS51532B4SD4?
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 MS51532B4SD4?
MS51532B4SD4 is a CAP,TUBE.
What parts can replace MS51532B4SD4?
There are 9 known substitutes for MS51532B4SD4: 516-8500418 ITEM F49, 516-5486648 ITEM F183, 4FNTX-SSD4 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51532B4SD4?
MS51532B4SD4 is cataloged in the U.S. Government catalog under NSN 4730-01-642-5863. 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 — MS51532B4SD4

✓ 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.