Liftmaster K82-SB50-08, SCREW, 3/8"-16X8
The LiftMaster K82-SB50-08 is a 3/8 inch-16 x 8 inch replacement screw for compatible LiftMaster operator assemblies. While it may look like a basic fastener, the correct screw length and thread are important when the hardware supports brackets, covers, shafts, linkage, drive parts, or structural mounting points inside a gate operator.
Replacement is usually needed when the original fastener is stripped, cross-threaded, bent, missing, rusted, or damaged during service. Using the wrong screw can cause poor alignment, loose hardware, thread damage, or interference with moving components. Match this part to the original LiftMaster diagram rather than choosing only by thread size.
Compatible With
Documented compatibility is broad. Use K82-SB50-08 only in the assembly location where the parts diagram specifies this screw:
- Various LiftMaster residential gate operators
- Various LiftMaster commercial gate operators
- LiftMaster perimeter access solutions using this 3/8 inch-16 x 8 inch screw
- Operator cover, bracket, linkage, or mechanical assemblies where K82-SB50-08 is called out
- Applications cross-referenced by K82-SB50-08 or SB50-08
Features & Specifications
| Manufacturer | LiftMaster |
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| Product Type | Replacement Screw / Fastener |
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| Part Number | K82-SB50-08 |
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| Application | Operator assembly hardware |
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| Thread Size | 3/8 inch-16 |
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| Length | 8 inches |
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| Compatible Operator Type | Select residential and commercial gate operators |
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| Notes | Match by parts diagram and assembly location |
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Also Known As / Related Part Numbers
- K82-SB50-08
- 82-SB50-08
- SB50-08
- 3/8-16 x 8 screw
- 3/8 inch-16 x 8 inch screw
Technician Note
If the original screw backed out or broke, inspect the threaded receiving part, spacer stack, bracket alignment, and vibration source. Replacing the fastener without correcting worn threads or misalignment can lead to another failure.
Before Ordering
- Confirm the exact screw callout in the parts diagram
- Verify thread size, length, head style, and mounting location
- Inspect the mating threads for stripping or corrosion
- Check that no moving parts will contact the replacement screw
- Do not substitute hardware in load-bearing or alignment-critical locations without confirmation
Professional Advisory
Secure the gate operator and disconnect power before working around mechanical assemblies. Large gates can move unexpectedly if hardware is removed from a loaded bracket or linkage.
Important Ordering Warning
This screw should not be treated as a universal replacement for every 3/8-16 fastener in a LiftMaster operator. Length and application matter.
Product Questions
What size is K82-SB50-08?
It is listed as a 3/8 inch-16 x 8 inch replacement screw.
Can I use a shorter screw if the thread size matches?
Not unless the parts diagram or manufacturer guidance allows it. Length can affect engagement, alignment, and strength.
Is this for garage door openers or gate operators?
Listings support use with various LiftMaster residential and commercial gate operators and perimeter access solutions.
Why should I verify the parts diagram for a screw?
Because the same thread size may be used in different lengths, grades, and locations. The wrong screw can interfere with moving parts or fail under load.
What should be inspected when a screw is missing or damaged?
Check the bracket, receiving threads, spacers, washers, corrosion, and any movement or vibration that may have caused the hardware to loosen.
