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30639-2 — LINING,FRICTION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

30639-2: LINING,FRICTION.

The LINING,FRICTION is a the manufacturer industrial component. Key specifications include width: 4.000 INCHES NOMINAL IN, material: ASBESTOS FRICTION LINING, thickness: 0.250 INCHES NOMINAL IN, arc_length: 46.500 INCHES NOMINAL IN, lining_style: SEGMENT PLAIN, minor_radius: 35.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-115-0461, 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
30639-2
NSN: 4730-00-115-0461
NIINs: 001150461, 002043118
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 80256 — OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
width4.000 INCHES NOMINAL IN
materialASBESTOS FRICTION LINING
thickness0.250 INCHES NOMINAL IN
arc_length46.500 INCHES NOMINAL IN
lining_styleSEGMENT PLAIN
minor_radius35.750 INCHES NOMINAL IN
application_typeDRY
features_providedRIGID FRICTION LINING
fabrication_methodFOLDED
surface_condition_and_locationONE SIDE GROUND
NSN4730-00-115-0461
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 30639-2 · 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
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MATERIAL: ALUMINUM OVERALL
TECHNICAL CHARACTERISTICS
MATERIALALUMINUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
0306392Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 30639-2?
30639-2 is a LINING,FRICTION.
What parts can replace 30639-2?
There is 1 known substitute for 30639-2: 0306392. Substitute compatibility should be verified for your specific system.
What is the NSN for 30639-2?
30639-2 is cataloged in the U.S. Government catalog under NSN 4730-00-115-0461. 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.