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218191-8 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

218191-8: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY BALL, bore_shape: STRAIGHT, bore_diameter: 0.9997 INCHES MINIMUM AND 1.0002 INCHES MAXIMUM IN, contact_angle: 45.0 DEGREES NOMINAL, overall_width: 0.7490 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN, load_direction: ANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-484-8622, 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
218191-8
NSN: 4730-01-484-8622
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10237 — CADILLAC GAGE TEXTRON INC. (USA)
SPECIFICATIONS
materialNICKEL ALLOY BALL
bore_shapeSTRAIGHT
bore_diameter0.9997 INCHES MINIMUM AND 1.0002 INCHES MAXIMUM IN
contact_angle45.0 DEGREES NOMINAL
overall_width0.7490 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM IN
load_directionANGULAR
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RING, NON-SEPARABLE
overall_outside_diameter2.7505 INCHES MINIMUM AND 2.7513 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-1083,COMP 9,GRADE 200 MIL SPEC SINGLE MATERIAL RESPONSE BALL
NSN4730-01-484-8622
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 218191-8 · 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 1
218191Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 218191-8?
218191-8 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 218191-8?
There is 1 known substitute for 218191-8: 218191. Substitute compatibility should be verified for your specific system.
What is the NSN for 218191-8?
218191-8 is cataloged in the U.S. Government catalog under NSN 4730-01-484-8622. 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.