Schletter Flange Nut M10 with Locking Teeth, DIN EN 1661 | 943000-022

Description

This Schletter M10 flange nut features an integrated locking flange with anti-twist serrations, manufactured to DIN EN 1661 as the current-generation successor to Schletter's earlier DIN 6923 flange nut design.

The serrated underside bites into the mating surface as the nut is tightened, providing resistance to loosening under the vibration and thermal cycling typical of roof-mounted PV arrays, without needing a separate lock washer.

M10

Thread Size

DIN EN 1661

Standard

Anti-Twist Flange

Locking Feature

No Washer Needed

Simplified Fixing

Corrosion-Resistant

Material Class

Schletter

Manufacturer

Key Features

Integrated Anti-Twist Flange

The serrated flange is built into the nut, gripping the mating surface as it's tightened and resisting loosening under vibration without a separate lock washer.

Current DIN EN 1661 Standard

Manufactured to DIN EN 1661, the current specification superseding Schletter's earlier DIN 6923 M10 flange nut design.

Reduces Loose Parts on Site

Combining the nut and locking function in one part reduces the number of separate washers installers need to track and fit.

Suited to Outdoor PV Applications

Designed for the vibration and thermal cycling typical of roof-mounted solar arrays over their working life.

Wide Compatibility Across Schletter M10 Hardware

As a standard M10 fastener, it pairs with Schletter's M10 bolts, hanger bolts and connector hardware across multiple system ranges.

Technical Specification

Fastener Specification

Thread Size

M10

Manufacturing Standard

DIN EN 1661

Locking Feature

Integrated anti-twist serrated flange

Supersedes

Schletter M10 flange nut to DIN 6923 (943912-010)

Frequently Asked Questions

What does the anti-twist flange do?

The serrated flange integrated into the nut digs into the surface it is tightened against, resisting loosening from vibration and thermal movement without needing a separate lock washer.

Is this the same as Schletter's earlier M10 flange nut?

This nut is manufactured to DIN EN 1661, the current standard that has replaced Schletter's earlier DIN 6923 flange nut design as that part is phased out.

Do I need a washer with this nut?

No, the integrated flange performs the locking function, so a separate lock washer is not required.

What is this nut typically used with?

It's used as a standard M10 fastener across various Schletter mounting connections, including bolted rail and connector hardware.

Is this nut suitable for outdoor exposure?

Yes, it is designed for the vibration and weathering conditions typical of roof-mounted PV installations.

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