Product Description
BA solid brass Table 1 flat washers for use with BA thread fasteners. These washers are made from solid brass and are original Table 1 pattern washers, not metric equivalent washers.
Designed for British Association thread applications, these brass flat washers are suitable for model engineering, electrical work, restoration, classic machinery, instrument work and general BA fastener assemblies where a traditional imperial BA washer is required.
Available in 0BA, 2BA, 3BA and 4BA sizes, these washers provide a bearing surface under BA screws, bolts and nuts. BA threads are commonly referenced to BS 93, with these washers described by their original Table 1 washer pattern.
- BA flat washers
- Solid brass material
- Original Table 1 pattern
- Not metric equivalent washers
- For BA thread fasteners
- Sizes available: 0BA, 2BA, 3BA and 4BA
- Suitable for model engineering, electrical and restoration work
- Available in small and bulk pack sizes
Also known as BA brass washers, Table 1 BA washers, brass BA flat washers, British Association washers, model engineering washers and imperial brass washers.

| A | B | C |
| 4BA | 0.30" | 0.02" |
| 3BA | 0.34" | 0.02" |
| 2BA | 0.39" | 0.03" |
| 0BA | 0.50" | 0.03" |