Genuine BMW Flanged Hex Bolt/Screw M12x1.5x85 10.9 (Collar) - OEM Chassis/Suspension Control Arm/Subframe Fastener - Part 31106797237 - Fits F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 F80 M3 F82 F83 M4 F87 M2 E46 E90 E91 E92 X1 E84 Z8 E52 M135i M240i 340i

BMW Factory-Original Flanged Hex Screw M12 x 1.5 x 85, Grade 10.9 — Part No. 31106797237

Looking for the correct BMW replacement hardware for critical chassis work? This factory-original flanged hex screw delivers the fit, strength and consistency you want when refreshing suspension and underbody fixings on popular F-series and E-series models. Built to BMW’s exacting standards with an M12 x 1.5 thread and 85 mm length, this grade 10.9 steel fastener is the precise OE solution for owners who refuse to compromise.

Part Number: 31106797237

Why enthusiasts choose this OE fastener

• Authentic BMW hardware for precise alignment and reliable torque retention
• Correct spec: M12 x 1.5 pitch, 85 mm overall length, high tensile 10.9
• Ideal for chassis and suspension refurbishments where genuine fixings matter
• Trusted by our workshop and our customers for repeatable, trouble-free installs

We use this exact screw in-house and feedback from BMW owners has been consistently positive on fit, finish and durability. If you are replacing tired fixings during maintenance or performance upgrades, choosing OE hardware keeps everything to factory spec.

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Confirmed applications

Compatible across a wide range of BMW platforms including:

• 1 Series: F20, F21
• 2 Series: F22, F23, F87 M2
• 3 Series: E46, E90, E91, E92, F30, F31, F34
• 4 Series: F32, F33, F36, F82 M4, F83 M4
• M models: F80 M3, F82 M4, F83 M4, F87 M2
• X1: E84
• Z8: E52
• Popular trims included: M135i, M240i, 340i

Specification

• Type: Flanged hex screw with collar
• Thread: M12 x 1.5
• Length: 85 mm
• Strength: 10.9 high tensile
• BMW Part Number: 31106797237

Fitment help

Not sure it suits your vehicle? Add your UK reg or the last 7 of your VIN at checkout and we will confirm compatibility before dispatch.

Professional installation

For fitting, we recommend MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Always follow BMW torque values and replacement guidance for single-use fixings where applicable.

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