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MB 25 — CONNECTOR SPECIAL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MB 25: CONNECTOR SPECIAL.

The CONNECTOR SPECIAL is a the manufacturer industrial component. Key specifications include hole_diameter: 125.0 MILLIMETERS NOMINAL MM, outside_angle: 25.0 DEGREES NOMINAL, outside_diameter: 170.0 MILLIMETERS NOMINAL MM, special_features: MATERIAL: FERROUS PER ANSI/AFBMA 8.2;MAGNI 575;FINISH: PLAIN;LOCK WASHER NUMBER MB 25, style_designator: FLAT EXTERNAL TEETH, material_thickness: 2.00 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-467-7631, 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
MB 25
NSN: 4730-00-467-7631
NIINs: 004677631, 016589377
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: K5294 — GE AVIATION SYSTEMS LTD (GBR)
SPECIFICATIONS
hole_diameter125.0 MILLIMETERS NOMINAL MM
outside_angle25.0 DEGREES NOMINAL
outside_diameter170.0 MILLIMETERS NOMINAL MM
special_featuresMATERIAL: FERROUS PER ANSI/AFBMA 8.2;MAGNI 575;FINISH: PLAIN;LOCK WASHER NUMBER MB 25
style_designatorFLAT EXTERNAL TEETH
material_thickness2.00 MILLIMETERS NOMINAL MM
external_key_quantity19
internal_key_quantity1
end_item_identification4210-01-622-0440;TRUCK,FIRE FIGHTING
internal_straight_key_width14.0 MILLIMETERS NOMINAL MM
part_name_assigned_by_controlling_agencyWASHER,BRG NUT
NSN4730-00-467-7631
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MB 25 · 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MB 25?
MB 25 is a CONNECTOR SPECIAL.
What is the NSN for MB 25?
MB 25 is cataloged in the U.S. Government catalog under NSN 4730-00-467-7631. 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.