16B6521 — COVER,ACCESS,AIRCRAFT

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

16B6521: COVER,ACCESS,AIRCRAFT.

The COVER,ACCESS,AIRCRAFT is a the manufacturer industrial component. Key specifications include material: ALUMINUM, inside_diameter: 4.140 INCHES NOMINAL IN, flange_thickness: 0.100 INCHES NOMINAL IN, special_features: 45 DEGREES (ADPX); 90 DEGREES (ADPW); 45 DEGREES (ADPQ); 45 DEGREES (CWCJ); ADPRJAA2.070, peripheral_shape_style: RECTANGLE, ONE CENTER HOLE, end_item_identification: F16. This part is cataloged in the U.S.

Government catalog under NSN 1560-01-466-6047, 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

16B6521

NSN: 1560-01-466-6047
NIINs: 014666047, 014813670, 014814303, 014814307, 014814349, 014814431, 014814432
FSC: 1560 — Airframe Structural Components
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)

SPECIFICATIONS

material	ALUMINUM
inside_diameter	4.140 INCHES NOMINAL IN
flange_thickness	0.100 INCHES NOMINAL IN
special_features	45 DEGREES (ADPX); 90 DEGREES (ADPW); 45 DEGREES (ADPQ); 45 DEGREES (CWCJ); ADPRJAA2.070
peripheral_shape_style	RECTANGLE, ONE CENTER HOLE
end_item_identification	F16
first_recess_inside_height	0.850 INCHES NOMINAL IN
cross-sectional_shape_style	CIRCULAR RECESS
NSN	1560-01-466-6047

COMPONENT DIAGRAM

KEY FEATURES

•

FLANGE THICKNESS: 0.100 INCHES NOMINAL IN

•

FIRST RECESS INSIDE HEIGHT: 0.850 INCHES NOMINAL IN

•

CROSS-SECTIONAL SHAPE STYLE: CIRCULAR RECESS

•

INSIDE DIAMETER: 4.140 INCHES NOMINAL IN

•

PERIPHERAL SHAPE STYLE: RECTANGLE, ONE CENTER HOLE

•

MATERIAL: ALUMINUM

TECHNICAL CHARACTERISTICS

FLANGE THICKNESS	0.100 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT	0.850 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE	CIRCULAR RECESS
INSIDE DIAMETER	4.140 INCHES NOMINAL IN
SPECIAL FEATURES	45 DEGREES (ADPX); 90 DEGREES (ADPW); 45 DEGREES (ADPQ); 45 DEGREES (CWCJ); ADPRJAA2.070
PERIPHERAL SHAPE STYLE	RECTANGLE, ONE CENTER HOLE
END ITEM IDENTIFICATION	F16
MATERIAL	ALUMINUM

SUBSTITUTES & CROSS-REFERENCES 1

16B6521-155Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)

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FREQUENTLY ASKED QUESTIONS

What is 16B6521?

16B6521 is a COVER,ACCESS,AIRCRAFT.

What parts can replace 16B6521?

There is 1 known substitute for 16B6521: 16B6521-155. Substitute compatibility should be verified for your specific system.

What is the NSN for 16B6521?

16B6521 is cataloged in the U.S. Government catalog under NSN 1560-01-466-6047. This indicates validated use in U.S. government and defense supply chains.

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16B6521 — COVER,ACCESS,AIRCRAFT

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