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Flat Washers from Steel Sheet
A plain washer spreads a nut's or bolt head's load and protects the surface under it. ISO 7089 gives the M6 washer as 6.4 mm bore, 12 mm outside and 1.6 mm thick. Drill the bore first while the sheet is still large and easy to hold, cut the washer out roughly, then spin it on a bolt in a drill and file it round.
Beginner
1 hour for 10 washers
Instructions
1
1
Mark out
Mark out
On 1.6 mm mild steel sheet, mark 12 mm circles 14 mm apart with the scriber and centre-punch each centre.
Materials for this step:
Mild Steel Sheet0.01 sqm
Engineer's Blue1 mlTools needed:
Scriber
Center Punch
Digital Caliper 6-Inch2
2
Drill the bores
Drill the bores
Clamp the sheet and drill each centre 6.4 mm, with cutting oil.
Materials for this step:
Cutting Oil5 mlTools needed:
Drill Press
Drill Bit Set
Machine Vice
Safety Glasses3
3
Cut them out
Cut them out
Saw each washer out as a square just outside its circle, then cut the corners off.
Tools needed:
Hacksaw
Bench Vise4
4
Round them on a bolt
Round them on a bolt
Stack several on an M6 bolt with a nut, tighten, chuck the bolt in a drill, and run it slowly while a file trues the stack to 12 mm.
Tools needed:
Hex Bolt Assortment
Cordless Drill
File SetDigital Caliper 6-InchSafety Glasses5
5
Deburr
Deburr
Take them off and deburr both faces and the bore.
Tools needed:
Deburring ToolFile Set6
6
Troubleshooting
Troubleshooting
Washer troubleshooting.
Flow
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Materials
3- 0.01 sqmPlaceholder
- 1 mlPlaceholder
- 5 mlPlaceholder
Tools Required
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