Name: SUPPORT,STRUCTURAL COMPONENT,AIR
Brand: Unknown
SKU: 668866

668866 ✓ Verified by PartsTable

— · MRO · MRO_GENERAL

WHAT YOU NEED TO KNOW

Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel

Confirm exact part number — similar PNs may be different parts

PRODUCT OVERVIEW

SUPPORT,STRUCTURAL COMPONENT,AIR. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: INVOLUTE SPLINE BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 2.8500 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5840-00-305-9599, 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

MRO→ MRO_GENERAL→ 668866

NSN: 5840-00-305-9599
FSC: 5840
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

material	STEEL OVERALL
body_style	PLAIN, SOLID
bore_style	INVOLUTE SPLINE BOTH ENDS
tooth_form	STANDARD
pitch_diameter	2.8500 INCHES NOMINAL IN
pressure_angle	20.0000 DEGREES
teeth_quantity	57
hardness_rating	39.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM BODY
spline_quantity	16 BOTH ENDS
style_designator	CONE SHAPE BODY, PROTRUDING HUB, RECESSED HUB
face_nominal_width	0.375 INCHES IN
backlash_designation	GRADE A
NSN	5840-00-305-9599

COMPONENT DIAGRAM

VERIFIED SUBSTITUTES & CROSS-REFERENCES 3

66-8866Interchangeable

interchangeable cross-reference

interchangeable

60-3291Interchangeable

interchangeable cross-reference

interchangeable

BL26265Interchangeable

Same NIIN cross-reference

interchangeable

LIFECYCLE

StatusACTIVE

AvailabilityOEM and secondary market

RoHS CompliantEAR99Not HAZMAT

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FREQUENTLY ASKED QUESTIONS

What is 668866?

668866 is a SUPPORT,STRUCTURAL COMPONENT,AIR. It is classified as a MRO (MRO_GENERAL).

What parts can replace 668866?

There are 3 known substitutes for 668866: 66-8866, 60-3291, BL26265. Substitute compatibility should be verified for your specific system.

What is the NSN for 668866?

668866 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5840-00-305-9599. This indicates validated use in U.S. government and defense supply chains.

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