Publication 52 - Hazardous, Restricted, and Perishable Mail > Appendix G > STCs Domestic Outbound (Required) > G01 STCs Domestic Outbound (Optional)
The following STCs are optional but are permitted to be used when shipping hazardous materials if the corresponding extra service is purchased:
761
Priority Mail Express Signature Requested – Hazardous Materials
762
Priority Mail Express with Insurance – Hazardous Materials
763
Priority Mail Express with Insurance Restricted Delivery – Hazardous Materials
764
Priority Mail Express Adult Signature Over 21 – Hazardous Materials
120
Priority Mail Insurance <= $500 – Hazardous Materials
323
Priority Mail Insurance > $500 – Hazardous Materials
075
Priority Mail Adult Signature Over 21 – Hazardous Materials
063
Priority Mail Signature Confirmation Hazardous Materials
185
USPS Ground Advantage (up to 15.999 oz.) Insurance <= $500 – Hazardous Materials
186
USPS Ground Advantage (up to 15.999 oz.) Insurance > $500 – Hazardous Materials
363
USPS Ground Advantage (one pound or more) Insurance <= $500 - Hazardous Materials
365
USPS Ground Advantage (one pound or more) Insurance > $500 - Hazardous Materials
166
USPS Ground Advantage (up to 15.999 oz.) Signature Confirmation - Hazardous Materials
383
USPS Ground Advantage One Pound or More Signature Confirmation Hazardous Materials
483
Parcel Select Insurance <= $500 - Hazardous Materials
628
Parcel Select Insurance > $500 - Hazardous Materials
646
Parcel Select Signature Confirmation Hazardous Materials
Note: This list may change. Refer to the current list published at https://postalpro.usps.com/pub199.
