Mighty Mule FM600 Parts - HB100 Hardware Brackets FM600
The HB100 is a replacement hardware bracket set for select Mighty Mule swing gate opener installations. These brackets provide the physical mounting points that hold the opener arm in the proper relationship to the gate and gate post.
Mounting brackets take a lot of stress over time. A sagging gate, poor hinge alignment, wind load, or an opener that has been pushing against a hard stop can bend brackets or enlarge mounting holes. When the bracket geometry changes, the arm may bind, overtravel, or fail to pull the gate evenly.
HB100 is not the same as a hardware bag or complete replacement arm. It is used when the bracket set itself needs replacement or when a used opener is being installed without the correct mounting brackets. Proper bracket positioning is critical for safe and reliable gate movement.
Compatible With
This part is commonly associated with the following Mighty Mule, GTO, and Linear PRO applications. Always match the part number, operator model, and parts diagram before ordering because older and newer generations may use similar-looking parts.
- Mighty Mule MM271 and MM272 where HB100 bracket set is specified
- Mighty Mule MM371W and MM372W swing gate openers
- Mighty Mule MM571W and MM572W swing gate openers
- Mighty Mule FM350 and FM352 applications
- Mighty Mule FM500 and FM502 applications
- Commonly associated with FM600 bracket replacement searches where the bracket style matches
- Select current and older Mighty Mule swing opener arms using the HB100 bracket set
Features and Specifications
| Manufacturer | Linear / Mighty Mule / GTO |
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| Product Type | Hardware bracket set |
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| Part Number | HB100 |
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| Application | Gate opener arm mounting brackets |
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| Compatible Operator Type | Select Mighty Mule swing gate openers |
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| Included Components | Bracket set; hardware contents should be compared to manufacturer kit |
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| Material / Finish | Metal bracket set; finish may vary by production |
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Also Known As / Related Part Numbers
- HB100
- HB-100
- SR-HB100
- LIN-HB100
- Mighty Mule HB100
- Mighty Mule hardware brackets
- FM350 bracket set
- FM352 bracket set
- FM500 bracket set
- FM502 bracket set
- FM600 bracket set
Technician Note
Bracket geometry affects arm travel. If a gate opener arm is installed with the wrong bracket spacing or angle, the arm can bottom out internally or put side-load on the gate bracket.
Before Ordering
- Confirm the operator model and bracket style.
- Check whether one or two bracket sets are needed for single or dual gate systems.
- Inspect gate hinges and gate post stability before installing new brackets.
- Confirm the operator arm is not bent or damaged from a previous bracket failure.
- Follow the operator manual for push-to-open or pull-to-open bracket placement.
Professional Advisory
Do not use new brackets to force a bad gate into position. A gate that drags, sags, or binds should be repaired mechanically before the automatic opener is reattached.
Product Questions and Answers
Is HB100 one bracket or a bracket set?
HB100 is commonly sold as a bracket set for mounting a compatible Mighty Mule gate opener arm.
How many HB100 sets are needed for a dual gate?
Each opener arm typically requires its own bracket set, so a dual gate may require two sets if both sides need replacement.
Is HB100 the same as H101P?
No. HB100 is the bracket set. H101P is a hardware bag kit used for select operator hardware needs.
Which models commonly use HB100?
It is commonly listed for MM271, MM272, MM371W, MM372W, MM571W, MM572W, FM350, FM352, FM500, and FM502 applications, with some FM600-related listings.
Can wrong bracket placement damage the opener?
Yes. Incorrect geometry can cause binding, overtravel, limit issues, and extra load on the arm and gate hardware.
