# Explosives (Hazard Class 1) — domestic surface — Postal shipping restrictions by item category

For Explosives (Hazard Class 1), item category is Explosives (Hazard Class 1) — domestic surface; carrier is USPS; restriction type is prohibited; scope is domestic mail via surface transportation; conditions is Generally prohibited; exceptions exist for Division 1.4S toy propellant devices and safety fuses with prior written approval, recorded from its source on 2026-08-04.

- **Item category:** Explosives (Hazard Class 1) — domestic surface _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** domestic mail via surface transportation _(our reading, not quoted from the source)_
- **Conditions:** Generally prohibited; exceptions exist for Division 1.4S toy propellant devices and safety fuses with prior written approval

## What the source says

> Domestic Mail via Surface Transportation: Generally, explosives are prohibited, with exceptions for Division 1.4S toy propellant devices and safety fuses that have been approved by the director, Product Classification before mailing

## Source

- https://pe.usps.com/text/pub52/pub52c3_020.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).