Mighty Mule FM502 Parts - H101P Hardware BAG for FM502 Operators
The H101P is a replacement hardware bag/kit used with selected Mighty Mule, GTO and Linear PRO swing gate opener arms. These small pieces of hardware are easy to lose during service but are important for keeping the opener arm, brackets and pivot points properly secured. Missing or worn pins, washers, bolts or retaining clips can create looseness, rattling, arm misalignment and premature wear.
This hardware bag is commonly listed for multiple Mighty Mule FM series operators and several older GTO PRO swing operator families. It is not the same item as the HB100 bracket set. H101P is generally the smaller hardware kit, while bracket sets include larger mounting brackets. When rebuilding a used or incomplete operator, both the hardware bag and bracket set may need to be checked.
Use this kit when the original hardware is missing, corroded, or no longer safe to reuse. If the operator arm is moving on the brackets or the pin holes are elongated, inspect the brackets and front mount as well because replacing small hardware alone may not remove all play.
Compatible With
The H101P hardware bag is commonly associated with these operator families and service applications:
- Mighty Mule FM250 swing gate opener
- Mighty Mule FM350 and FM352 swing gate openers
- Mighty Mule FM500 and FM502 swing gate openers
- Mighty Mule FM600 swing gate opener
- GTO PRO 1000, 2000XL, 2002XL, 2500, 2502, 2550 and 3000XL references where specified
- MM500, MM502, MM1500 and related MM series references where specified
- Select hardware bag applications that include related small hardware such as R4027, depending on kit version
- Not a substitute for HB100 bracket set when the larger brackets are missing or damaged
Features & Specifications
| Manufacturer | GTO / Linear PRO / Mighty Mule family |
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| Product Type | Hardware bag / kit |
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| Part Number | H101P |
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| Application | Swing gate opener mounting and service hardware |
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| Compatible Operator Type | Select Mighty Mule and GTO/Linear linear arm swing openers |
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| Included Components | Small mounting hardware; contents may vary |
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| Notes | Confirm whether brackets are needed separately |
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Also Known As / Related Part Numbers
- H101P
- LIN-H101P
- GTO H101P
- Mighty Mule H101P
- MM-FM502-H101P
- hardware bag kit
- hardware bag for MM series
- R4027 related hardware reference
Technician Note
If hardware keeps loosening, check the gate stops, bracket alignment and arm geometry. Replacing clips or pins will not correct an installation that is forcing the arm out of line.
Before Ordering Checklist
- Confirm the operator model is listed for H101P or uses the same hardware bag.
- Determine whether you need small hardware only or a full bracket set such as HB100.
- Compare any remaining original pins, clips and fasteners to the kit contents.
- Inspect pivot holes for elongation before reusing brackets.
- Use the operator manual torque and placement guidance where provided.
Important Ordering Warnings
H101P and HB100 are often confused. H101P is a hardware bag/kit; HB100 is a hardware bracket set. Order the part that matches the missing or damaged components.
Professional Advisory
Loose gate opener hardware can affect gate movement and safety. If the arm has shifted or the gate no longer stops consistently, inspect the full installation before continued use.
Product Questions & Answers
What is the H101P hardware bag used for?
H101P supplies replacement small hardware used with select Mighty Mule, GTO and Linear PRO swing gate opener arms.
Which models commonly use H101P?
It is commonly listed for FM250, FM350, FM352, FM500, FM502, FM600 and several older GTO PRO 1000, 2000XL, 2500 and 3000XL style operators where specified.
Is H101P the same as HB100?
No. H101P is a hardware bag/kit. HB100 is a bracket set. They are related to installation hardware but are not the same part.
Can I use hardware from a local store instead?
Only if it matches the required size, strength and retaining method. Gate opener pivot hardware should not be substituted casually because it carries repeated push-pull load.
Why did my opener hardware wear out?
Wear can come from loose brackets, gate sag, missing stops, misalignment, corrosion or normal outdoor service. Inspect the brackets and gate movement before installing new hardware.
