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Ten copper sealing washers, 45 mm inner and 52 mm outer diameter, plain finish

Zoro Select

Zoro Select M50302.450.0052 Sealing Washer M45 Copper Pack 10

SKU CH-K3ED-V4A9Z

Copper sealing washers for M45 bolts, 45 mm inside diameter, 52 mm outside diameter, 2 mm thick, pack of 10

  • Product typeWashers
  • Copper material resists corrosion in fluid systems
  • Annealed finish ensures reliable sealing under compression
  • Metric M45 sizing fits standard bolt threads
  • Precise 2 mm thickness with ±0.2 mm tolerance
  • Pack of 10 washers for multiple installations

Copper Sealing Washers for M45 Bolts

This pack contains ten plain-finish copper sealing washers sized for M45 bolts. Each washer has a 45 mm inside diameter, a 52 mm outside diameter and a uniform 2 mm thickness with a tolerance of ±0.2 mm. The copper material is annealed for reliable sealing performance.

Suitable for M45 metric fastener assemblies

These washers suit maintenance, repair and assembly tasks where a copper seal on an M45 bolt is specified. They are not intended for applications requiring a different bolt size, a non-metallic seal material or a larger pack quantity than ten pieces.

Ten washers provide enough for several M45 joints

The small pack delivers ten pieces, giving enough washers for multiple M45 connections or for keeping spares on hand. Once the ten washers are used, an additional pack will be required for further assemblies.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 65% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameZORO SELECT
Product typeWashers

Questions about this item

What bolt size do I need for these M45 copper sealing washers?

They are made for an M45 bolt with a 45 mm inside diameter and a 52 mm outside diameter.

Can I reuse these annealed copper washers on an older fitting?

The copper is annealed and 2 mm thick with a ±0.2 mm tolerance, so it will conform to an existing M45 face if the surface is clean and flat.

How do I confirm the washers are sealing correctly after installation?

Torque the joint to spec, then pressure-test the system; a proper seal shows no fluid or gas leakage at the 45 mm bore.

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