The requirement is to analyze the risk for incoming inspection. How many times do you get material or incoming parts from a supplier that have defects or don't meet specs? If the occurrence is low, you can make a case to continue as you have been. For my company, we have a list of all our approved suppliers and we rank them as below and their ranking is based on a number of factors including delivery and quality:
"1.0 Classification of Sub-Contractors
Sub-Contractors are categorized based primarily on quantity of product supplied and the level of importance of the material.(This determination is made subjectively by Project Teams and/or Purchasing, based on experience and process understanding)
A = High volume Sub-Contractor and/or provides critical components to our products and processes.
B = Low volume (secondary) Sub-Contractor and/or provides non-critical components to our products and processes.
CSP = Customer Supplied Product: Indicates that the customer is responsible for supplying components used to manufacture their own product.
CDS = Customer Directed Supplier: Indicates that the customer has directed Profile to the source from which the components are to be purchased from that are used to manufacture their own product.
EVAL = New Sub-Contractors which have not been classified, and pending initial evaluation based on the product supplied to Profile and response to quality system requirements.
2.0 Rating of Sub-Contractors
2.1 Definition of the Ratings
The following ratings will apply when applicable.
1 = "Ship to Stock" indicates that materials received from the Sub-Contractor may be released to production without a release to production inspection.
2 = "Material Certs Required" indicates that the Sub-Contractor must supply material certifications for all materials received prior to release for production. "
This has been successfully used by our company for years. Hope this helps!