Zoro Select
Zoro Select M50302.350.0045 Copper Sealing Washer M35 10 Pack
Copper sealing washers for M35 bolts, 35 mm inner and 45 mm outer diameter, 2 mm thick, pack of 10
- TypeWashers
- Copper material resists corrosion for reliable sealing
- Fits M35 bolts with 35 mm inner diameter
- 45 mm outer diameter covers the joint surface
- 2 mm thickness provides consistent compression
- Pack of 10 washers for multiple installations
Zoro Select Copper Sealing Washers M35
These copper sealing washers suit M35 fasteners in hydraulic, fuel and cooling systems where a soft metal gasket is required. The annealed copper conforms to flange faces and maintains a seal under vibration and thermal cycling. Ten pieces are supplied in a single pack for spares or small jobs.
Installation notes and common issues
Place the washer flat against the mating surface and torque the bolt to the specification for the joint — copper crushes with little force so over-tightening splits the ring. Re-using a compressed washer is the usual cause of leaks; always fit a new one when the joint is broken. The plain finish offers no lubricity, so threads should be cleaned and lightly oiled before assembly.
Capacity and limits
Each washer has a 35 mm inside diameter, 45 mm outside diameter and a nominal 2 mm thickness with a ±0.2 mm tolerance, giving a consistent crush height across the pack. The soft copper seals effectively at moderate pressures but will extrude in high-pressure hydraulic circuits or where flange stiffness is low. For larger bolt sizes or higher pressure ratings a different washer is needed.
Highlights
- Copper material resists corrosion for reliable sealing
- Fits M35 bolts with 35 mm inner diameter
- 45 mm outer diameter covers the joint surface
- 2 mm thickness provides consistent compression
- Pack of 10 washers for multiple installations
Specifications
| Brand | ZORO SELECT |
|---|---|
| Type | Washers |
Questions about this item
How can I confirm the M35 copper sealing washers are working as intended after installation?
Check for a leak-free joint at the 35 mm inside diameter and verify the 2 mm thickness compresses evenly under torque without copper extrusion beyond the 45 mm outside diameter.
What comes in the pack and what must be purchased separately?
The pack contains ten annealed copper sealing washers sized for M35 bolts; mating bolts, nuts or threaded fittings are not included.
Which version or capacity should I choose for my M35 fastener?
This single variant — part number 50302.350.0045 — supplies ten plain-finish copper washers with 35 mm ID, 45 mm OD and 2 mm thickness, matching the M35 specification.
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