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Countersunk Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/903/90333a011p1-b01-digitall@halfx_636923082685881006.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/946/94695a270p1-b01-digitall@halfx_636923212592121014.png?ver=imagenotfound)
Flat and oval head screws sit flush within these washers for a neat, finished appearance.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Overall Ht. | Countersink Angle | Pkg. Qty. | Pkg. | |
Flanged Washers | |||||||
---|---|---|---|---|---|---|---|
18-8 Stainless Steel | |||||||
No. 6 | 0.180" | 0.500" | 0.110" | 82° | 100 | 000000000 | 00000 |
No. 8 | 0.210" | 0.609" | 0.125" | 82° | 100 | 000000000 | 0000 |
No. 10 | 0.250" | 0.703" | 0.125" | 82° | 100 | 000000000 | 0000 |
Washers | |||||||
316 Stainless Steel | |||||||
No. 4 | 0.140" | 0.390" | 0.110" | 82° | 50 | 000000000 | 0000 |
No. 6 | 0.180" | 0.438" | 0.110" | 82° | 50 | 000000000 | 0000 |
No. 8 | 0.210" | 0.531" | 0.130" | 82° | 50 | 000000000 | 0000 |
No. 10 | 0.250" | 0.593" | 0.130" | 82° | 50 | 000000000 | 0000 |
No. 12 | 0.280" | 0.688" | 0.160" | 82° | 25 | 000000000 | 0000 |
1/4" | 0.320" | 0.781" | 0.180" | 82° | 25 | 000000000 | 0000 |
18-8 Stainless Steel | |||||||
No. 4 | 0.150" | 0.375" | 0.110" | 82° | 100 | 000000000 | 0000 |
No. 6 | 0.180" | 0.438" | 0.110" | 82° | 100 | 000000000 | 0000 |
No. 8 | 0.210" | 0.531" | 0.130" | 82° | 100 | 000000000 | 0000 |
No. 10 | 0.250" | 0.594" | 0.130" | 82° | 100 | 000000000 | 0000 |
No. 12 | 0.280" | 0.688" | 0.160" | 82° | 100 | 000000000 | 0000 |
1/4" | 0.320" | 0.781" | 0.180" | 82° | 100 | 000000000 | 0000 |
5/16" | 0.380" | 0.891" | 0.180" | 82° | 50 | 000000000 | 0000 |
3/8" | 0.445" | 1.125" | 0.250" | 82° | 50 | 000000000 | 0000 |
Metric Countersunk Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/984/98424a350p1-b01-digitall@halfx_636840232033615724.png?ver=imagenotfound)
Flat and oval head screws sit flush within these washers for a neat, finished appearance.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Finishing Countersunk Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/925/92538a355-@halfx_637575315974758500.png?ver=imagenotfound)
Also known as dress washers, these are machined to be sturdier and provide a neater appearance than standard countersunk washers. Flat and oval head screws sit flush within them.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Countersink Angle | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
No. 4 | 0.125" | 0.438" | 0.084"-0.104" | 82° | Rockwell B83 | 1 | 000000000 | 00000 |
No. 4 | 0.125" | 0.438" | 0.084"-0.104" | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 5 | 0.140" | 0.500" | 0.084"-0.104" | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 5 | 0.140" | 0.500" | 0.094"-0.114" | 82° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 6 | 0.156" | 0.562" | 0.084"-0.104" | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 6 | 0.156" | 0.562" | 0.097"-0.117" | 82° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 8 | 0.188" | 0.750" | 0.115"-0.135" | 82° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 8 | 0.188" | 0.750" | 0.115"-0.135" | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 10 | 0.203" | 0.812" | 0.130"-0.151" | 82° | Rockwell B83 | 1 | 000000000 | 0000 |
No. 10 | 0.203" | 0.812" | 0.130"-0.151" | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
1/4" | 0.281" | 1.250" | 0.271"-0.291" | 82° | Rockwell B83 | 1 | 000000000 | 00000 |
1/4" | 0.281" | 1.250" | 0.271"-0.291" | 100° | Rockwell B83 | 1 | 000000000 | 00000 |
5/16" | 0.344" | 1.250" | 0.198"-0.218" | 82° | Rockwell B83 | 1 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
No. 4 | 0.125" | 0.438" | 0.084"-0.104" | 82° | Rockwell B83 | 1 | 0000000 | 0000 |
No. 5 | 0.140" | 0.500" | 0.094"-0.114" | 82° | Rockwell B83 | 1 | 0000000 | 0000 |
No. 6 | 0.156" | 0.562" | 0.097"-0.117" | 82° | Rockwell B83 | 1 | 0000000 | 0000 |
No. 8 | 0.188" | 0.750" | 0.115"-0.135" | 82° | Rockwell B83 | 1 | 0000000 | 0000 |
No. 10 | 0.203" | 0.812" | 0.130"-0.151" | 82° | Rockwell B83 | 1 | 0000000 | 0000 |
1/4" | 0.281" | 1.250" | 0.271"-0.291" | 82° | Rockwell B83 | 1 | 0000000 | 00000 |
5/16" | 0.344" | 1.250" | 0.198"-0.218" | 82° | Rockwell B83 | 1 | 0000000 | 00000 |
Metric Finishing Countersunk Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/925/92538a355-@halfx_637575315974758500.png?ver=imagenotfound)
Also known as dress washers, these are machined to be sturdier and provide a neater appearance than standard countersunk washers. Flat and oval head screws sit flush within them.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thick., mm | Countersink Angle | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M3 | 3.2 | 12.0 | 2.2-2.8 | 90° | Rockwell B83 | 1 | 000000000 | 00000 |
M3 | 3.2 | 12.0 | 2.2-2.8 | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
M4 | 4.3 | 16.0 | 2.7-3.3 | 90° | Rockwell B83 | 1 | 000000000 | 0000 |
M4 | 4.3 | 16.0 | 2.7-3.3 | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
M5 | 5.3 | 22.0 | 3.2-3.8 | 90° | Rockwell B83 | 1 | 000000000 | 0000 |
M5 | 5.3 | 22.0 | 3.2-3.8 | 100° | Rockwell B83 | 1 | 000000000 | 0000 |
M6 | 6.4 | 32.0 | 3.7-4.3 | 90° | Rockwell B83 | 1 | 000000000 | 00000 |
M6 | 6.4 | 32.0 | 3.7-4.3 | 100° | Rockwell B83 | 1 | 000000000 | 00000 |
M8 | 8.4 | 32.0 | 4.5-5.1 | 90° | Rockwell B83 | 1 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
M3 | 3.2 | 12.0 | 2.2-2.8 | 90° | Rockwell B83 | 1 | 0000000 | 0000 |
M3 | 3.2 | 12.0 | 2.2-2.8 | 100° | Rockwell B83 | 1 | 0000000 | 0000 |
M4 | 4.3 | 16.0 | 2.7-3.3 | 90° | Rockwell B83 | 1 | 0000000 | 0000 |
M4 | 4.3 | 16.0 | 2.7-3.3 | 100° | Rockwell B83 | 1 | 0000000 | 0000 |
M5 | 5.3 | 22.0 | 3.2-3.8 | 90° | Rockwell B83 | 1 | 0000000 | 0000 |
M5 | 5.3 | 22.0 | 3.2-3.8 | 100° | Rockwell B83 | 1 | 0000000 | 00000 |
M6 | 6.4 | 32.0 | 3.7-4.3 | 90° | Rockwell B83 | 1 | 0000000 | 00000 |
M6 | 6.4 | 32.0 | 3.7-4.3 | 100° | Rockwell B83 | 1 | 0000000 | 00000 |
M8 | 8.4 | 32.0 | 4.5-5.1 | 90° | Rockwell B83 | 1 | 0000000 | 00000 |
Countersunk External-Tooth Lock Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/909/90900a030p1-b01-digitall@halfx_636923083072610431.png?ver=imagenotfound)
The teeth on these washers firmly grip heads of 82° flat head countersunk screws to prevent joints from loosening under vibration.
400-series stainless steel washers have excellent wear resistance and may be mildly magnetic.
All washers meet ASME B18.21.1 dimensional standards.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Countersink Angle | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
400 Series Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
No. 6 | 0.140" | 0.289" | 0.017"-0.021" | 82° | Rockwell C34 | ASME B18.21.1 | 100 | 000000000 | 00000 |
No. 8 | 0.167" | 0.322" | 0.017"-0.021" | 82° | Rockwell C34 | ASME B18.21.1 | 100 | 000000000 | 00000 |
No. 10 | 0.195" | 0.354" | 0.020"-0.025" | 82° | Rockwell C34 | ASME B18.21.1 | 25 | 000000000 | 0000 |
No. 12 | 0.220" | 0.421" | 0.020"-0.025" | 82° | Rockwell C34 | ASME B18.21.1 | 50 | 000000000 | 0000 |
1/4" | 0.255" | 0.454" | 0.020"-0.025" | 82° | Rockwell C34 | ASME B18.21.1 | 25 | 000000000 | 0000 |
5/16" | 0.318" | 0.599" | 0.023"-0.028" | 82° | Rockwell C34 | ASME B18.21.1 | 25 | 000000000 | 0000 |