LiftMaster MA022 Barrier Arm Bolt — Documented Mega Arm Mounting Hardware

The LiftMaster MA022 is the arm-bolt service reference identified in the documented Mega Arm barrier assembly. It belongs to the specified arm attachment and must be distinguished from the nylon arm nuts, arm bracket and separate shear pin. The manufacturer diagram identifies two arm bolts in the assembly, but that installed quantity does not by itself establish the quantity sold in this supplier offer. Confirm the current package and match the approved mounting hardware before ordering, especially when repairing a barrier after a vehicle impact.

Compatibility — Models, Versions and Exclusions

Preserve the Specified Arm Attachment After a Repair

Inspect the bracket, arm mounting holes, nuts and surrounding connection whenever an attachment bolt is missing, loose or damaged. Elongated holes or a bent bracket cannot be corrected simply by tightening a new bolt. After a vehicle strike, have the complete arm and output connection evaluated before selecting only the visibly damaged fasteners.

The manufacturer identifies arm bolts, nylon nuts and a shear pin separately. Preserve their intended roles and use the prescribed assembly method. Do not substitute hardware by approximate diameter or choose a stronger fastener on the assumption that it improves the design. Record the original configuration and follow the operator instructions for secure attachment and recommissioning.

Specifications and Product Identification

Before Ordering

• Identify the exact operator and arm mounting arrangement.
• Match MA022 to the arm-bolt position in the service drawing.
• Inspect the bracket, arm holes and mating nuts for damage.
• Confirm quantity per package and all separately required attachment parts.

Package Contents and Separate Requirements

This offer identifies the MA022 arm-bolt service item. The manufacturer drawing lists two bolts in the installed assembly; confirm whether the current supplier package contains one bolt or the required set. Nylon nuts, the arm bracket, shear pin and barrier arm are not promised as included. Determine the complete repair inventory before dismantling the connection so the arm can be restored with all specified parts.

Safety Warnings — Read Before Installation or Service

• WARNING: A barrier arm can fall or move unexpectedly when its bracket or drive connection is disturbed. A qualified technician must support and secure it before service.
• Isolate all applicable power and prevent accidental access commands while the arm mounting is open. Keep people and vehicles outside the work area.
• Do not improvise shear hardware, force a bent mounting into alignment or operate with a loose arm connection. Follow the manufacturer’s repair requirements.
• Verify secure attachment, prescribed travel and all required vehicle-detection and protection functions before reopening the lane. Keep pedestrian access separate as required by the site design.

Related Products and Important Differences

• LOOPDETLM loop detector — a separate detection option only where the operator and loop arrangement approve it; not mounting hardware.
• LMRRUL monitored photo eye — a separate protection option for an approved operator configuration; bracket replacement does not establish sensor compatibility.

Frequently Asked Questions

Does one order automatically provide two bolts?

Do not assume so. Two is the documented installed quantity; verify the current supplier package.

Is MA022 the shear pin?

No. MA013 is the separately identified shear-pin reference.

Can an ordinary bolt and metal nut replace the specified hardware?

Use the documented fasteners and mating parts. Similar size alone does not establish an approved substitution.

Will new bolts fix worn mounting holes?

No. The arm and bracket need inspection and separate correction if their mounting features are damaged.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.