FC-M3-3 Captive Panel Screw, Flare-In

Product Overview

The FC-M3-3 is a flare-in captive panel screw assembly with a knurled 6061 aluminum knob, spring-loaded captive screw and passivated stainless steel flare sleeve. It is designed to remain attached to the panel after installation, helping prevent the fastener from being lost during repeated access or servicing.

Key Features

• Exact page product number: FC-M3-3

• Corresponding catalog designation: FC-3-3

• M3 thread code and bottom-end code 3

• Knurled anodized 6061 aluminum knob

• Passivated 12Cr18Ni9 stainless steel flare sleeve

• Applicable panel thickness: 0.8-2.0 mm

• Mounting hole diameter: 4.5 +0.08/0 mm

• Minimum floating movement: 0.5 mm

Exact Specifications

The following reference dimensions are taken from the FC-3-3 row of the LAMBOOR standard fastener catalog. All dimensions are in millimeters.

• Product series: FC

• Thread code: M3

• Bottom-end code: 3

• Knob material: 6061 aluminum

• Knob finish: anodized

• Flare sleeve material: 12Cr18Ni9 stainless steel

• Sleeve finish: passivated

• Applicable panel thickness: 0.8-2.0

• Mounting hole diameter: 4.5 +0.08/0

• Dimension A: 1.2 +/-0.1

• Dimension B: 0.4 +/-0.1

• Dimension C: 4.48 maximum

• Dimension G: 5.5 +/-0.4

• Dimension D: 0.8 +/-0.3

• Dimension T1: 14.4 +/-0.2

• Dimension T2: 13.4

• Dimension E: 8.0 +/-0.2

• Floating movement: 0.5 minimum

Part Number Breakdown

FC identifies the captive screw series, M3 identifies the thread code and the final 3 identifies the bottom-end code. The supplied page number is FC-M3-3, while the corresponding catalog row is written FC-3-3. Use the complete page product number when requesting a quotation and confirm the catalog designation on the order.

Installation and Panel Requirements

Use FC-M3-3 with panels from 0.8 to 2.0 mm thick and prepare the 4.5 +0.08/0 mm mounting hole shown in the catalog. Position the flare sleeve squarely in the panel and use compatible flare-in tooling to seat the assembly.

Inspect the sleeve seating, knob movement, floating movement and M3 screw operation after installation. The catalog dimensions are reference measurements and should be checked against the approved sample or drawing for production release.

Material and Finish

The catalog specifies an anodized 6061 aluminum knob and a passivated 12Cr18Ni9 stainless steel flare sleeve for the FC-3-3 row. The screw and spring materials are not separately stated on this page and should not be substituted without order confirmation.

Selection and Ordering

Select FC-M3-3 when a panel requires a retained M3 screw, a hand-operated knurled knob and flare-in mounting. For quotation or order confirmation, provide the complete product number, quantity, panel material and thickness, mounting-hole specification, required color or finish, packaging requirements and any inspection documents.

Frequently Asked Questions

What does FC-M3-3 identify?

FC-M3-3 identifies the FC captive panel screw series, an M3 thread code and bottom-end code 3. The catalog writes the corresponding row as FC-3-3, so both references should be checked when confirming an order.

What panel thickness and mounting hole are required?

The FC-3-3 catalog row specifies a panel thickness of 0.8-2.0 mm and a mounting hole diameter of 4.5 +0.08/0 mm. Use these values with the approved installation drawing and verify the panel before flaring the sleeve.

What materials and finishes are specified?

The knob is anodized 6061 aluminum, and the flare sleeve is passivated 12Cr18Ni9 stainless steel. The catalog page does not separately specify the screw and spring materials, so those components should follow the approved order specification.

Does FC-M3-3 provide floating movement?

Yes. The catalog specifies at least 0.5 mm of floating movement for the corresponding FC-3-3 row. Verify free movement and screw operation after installation.

What information should be supplied when ordering?

Provide FC-M3-3, the required quantity, panel material and thickness, mounting-hole preparation, required color or finish, packaging requirements and inspection documentation. Confirm current stock, price, minimum order quantity and lead time for each order.