45-049-75 — BACKING BOARD,LEAK,

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

45-049-75: BACKING BOARD,LEAK,.

The BACKING BOARD,LEAK, is a the manufacturer industrial component. Key specifications include end_item_identification: FIGHTER, AIRCRAFT-FIRST. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-893-0249, 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

45-049-75

NSN: 3020-00-893-0249
NIINs: 008930249, 015008220
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)

SPECIFICATIONS

end_item_identification	FIGHTER, AIRCRAFT-FIRST
NSN	3020-00-893-0249

COMPONENT DIAGRAM

KEY FEATURES

•

BORE NOMINAL DIAMETER: 0.187 INCHES BOTH ENDS IN

•

HUB NOMINAL DIAMETER: 0.375 INCHES FIRST END IN

•

TEETH QUANTITY: 75

•

BODY STYLE: PLAIN, SOLID

•

BORE STYLE: PLAIN BOTH ENDS

•

NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 0.295 INCHES FIRST END IN

•

PRECISION CLASSIFICATION: QUALITY NUMBER 10 OR QUALITY NUMBER 11

•

STYLE DESIGNATOR: PROTRUDING HUB

TECHNICAL CHARACTERISTICS

BORE NOMINAL DIAMETER	0.187 INCHES BOTH ENDS IN
HUB NOMINAL DIAMETER	0.375 INCHES FIRST END IN
TEETH QUANTITY	75
BODY STYLE	PLAIN, SOLID
BORE STYLE	PLAIN BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.295 INCHES FIRST END IN
PRECISION CLASSIFICATION	QUALITY NUMBER 10 OR QUALITY NUMBER 11
STYLE DESIGNATOR	PROTRUDING HUB
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PITCH DIAMETER	0.7813 INCHES NOMINAL IN

SUBSTITUTES & CROSS-REFERENCES 1

1196826Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 45-049-75?

45-049-75 is a BACKING BOARD,LEAK,.

What parts can replace 45-049-75?

There is 1 known substitute for 45-049-75: 1196826. Substitute compatibility should be verified for your specific system.

What is the NSN for 45-049-75?

45-049-75 is cataloged in the U.S. Government catalog under NSN 3020-00-893-0249. This indicates validated use in U.S. government and defense supply chains.

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