I have been looking across the different HSM provides alike Azure, AWS, IBM and Google but I haven't find any documentation about google HSM explicitely supporting 3DES keys.
However I can see the type
"CRYPTO_KEY_VERSION_ALGORITHM_UNSPECIFIED"
in https://cloud.google.com/kms/docs/reference/rest/v1/CryptoKeyVersionAlgorithm
This type is used to create a key in the KMS.
Does Google KMS HSM support 3DES?
It does not support 3DES as a key type you can create and use at this time. We'd be interested to know more about why you would want 3DES.