Brother PC-420
Computerized sewing machine
Brother lists the SA156 bobbin and SA120, SA129 and SA140 presser feet for the PC-420. SA129 requires a low-shank adapter on PC and ULT series machines.
Verified compatibility
4 verified relationships.
| Part or system | Relationship | Status | Evidence note |
|---|---|---|---|
| Brother SA156 Bobbin | Officially compatible | CONFIRMED | Brother lists PC-420 for use with the SA156 clear plastic Class 15 bobbin. |
| Brother SA120 Gathering Foot | Officially compatible | CONFIRMED | Brother includes PC-420 in the SA120 compatibility list. |
| Brother SA129 Free Motion Foot | Requires adapter | CONFIRMED | Brother includes PC-420 in the SA129 compatibility list and states that ULT/PC series machines require a low-shank adapter. |
| Brother SA140 Walking Foot | Officially compatible | CONFIRMED | Brother includes PC-420 in the SA140 compatibility list. |
Machine specifications
- Built-in sewing stitches
- 129 in Brother's specification table
- Decorative stitches called out in headline
- 72
- Buttonhole styles
- 10
- Included accessory feet
- 13
- Maximum sewing speed
- 850 stitches per minute
- Bobbin loading
- Quick-Set
- Automatic thread cutter
- Yes
- My Custom Stitch
- Yes
- Knee lifter
- Yes
- Machine weight
- 17 lb
About this machine
The Brother PC420 is a discontinued computerized sewing machine with My Custom Stitch, ten buttonhole styles, 13 included accessory feet, a Quick-Set bobbin, automatic thread cutting and a maximum sewing speed of 850 stitches per minute. Brother's current specification table lists 129 built-in sewing stitches, while the page headline specifically calls out 72 decorative stitches.
The 72 and 129 figures describe different views of the stitch library
Brother's marketing headline calls out 72 decorative stitches, while the current specification table lists 129 built-in sewing stitches in total. Presenting both with their labels is more accurate than treating the two numbers as an unexplained contradiction.
PC420 has a substantial original foot package
Brother lists 13 included accessory feet, including walking, quilting, non-stick and open-toe feet.
My Custom Stitch and automatic cutting are model-level features
PC420 can create personalized sewing stitches with My Custom Stitch and includes an automatic thread cutter. Those functions give the machine a clear identity beyond the shared Brother bobbin and presser-foot relationships already in the database.
What this machine is used for
- Garment sewing
- Decorative sewing
- Quilting
- Custom stitch creation
Sources and scope
Compatibility is limited to the current Brother USA accessory lists. Regional models and revisions may differ.
- SA156 Clear Plastic Bobbins 10-Pack Brother USA · Official accessory compatibility page · Tier 2
- Brother USA documentation Brother USA · Documentation · Tier 2
- SA120 Gathering Foot Brother USA · Official accessory compatibility page · Tier 1
- SA129 Free Motion Foot Brother USA · Official accessory compatibility page · Tier 1
- SA140 Walking Foot for 7mm Stitch Width Sewing Machines Brother USA · Official accessory compatibility page · Tier 1
Catalog source-link check completed September 2026. This maintenance check did not reverify every factual claim. See how factual verification differs from maintenance checks.