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65C18537-799 — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

65C18537-799: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, body_style: STEPPED, leg_length: 3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN, seat_angle: 37.0 DEGREES, reducer_type: CONCENTRIC, thread_class: 3A FIRST END A. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-134-8818, 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
65C18537-799
NSN: 4730-01-134-8818
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 82918 — THE BOEING COMPANY DIV LEGACY WICHITA (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
body_styleSTEPPED
leg_length3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN
seat_angle37.0 DEGREES
reducer_typeCONCENTRIC
thread_class3A FIRST END A
overall_length2.250 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
special_featuresCAP DRILLER FOR ATTACHMENT FO SAFETY CHAIN
style_designatorINSERT AND THREADED INTERNAL
thread_directionRIGHT-HAND INTERNAL
NSN4730-01-134-8818
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 65C18537-799 · 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 4
65C18537Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
65C18537-725Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS24399J16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-F-5509Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 65C18537-799?
65C18537-799 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 65C18537-799?
There are 4 known substitutes for 65C18537-799: 65C18537, 65C18537-725, MS24399J16 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 65C18537-799?
65C18537-799 is cataloged in the U.S. Government catalog under NSN 4730-01-134-8818. 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.