---
type: restriction
id: usps-explosives-hazard-class-1-domestic-surface
asset: shipping-restrictions-by-class
title: "Explosives (Hazard Class 1) — domestic surface — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c3_020.htm
source_quote: "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"
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Explosives (Hazard Class 1) — domestic surface"
carrier: "USPS"
restriction_type: "prohibited"
scope: "domestic mail via surface transportation"
conditions: "Generally prohibited; exceptions exist for Division 1.4S toy propellant devices and safety fuses with prior written approval"
verified: false
unverified_fields: item_category
---
**Item category:** Explosives (Hazard Class 1) — domestic surface

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** domestic mail via surface transportation

**Conditions:** Generally prohibited; exceptions exist for Division 1.4S toy propellant devices and safety fuses with prior written approval

> 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>