Radical 4 or radical slash (丿部) meaning "slash" or "bend" is one of 6 of the 214 Kangxi radicals that are composed of only one stroke.

In the Kangxi Dictionary, there are 33 characters (out of 49,030) to be found under this radical.

It is highly similar to the Japanese katakana, no (ノ), thus colloquially referred to as "no" in Japanese.

丿 is also the 4th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China.

• Large seal script character
• Small seal script character

• The 6th principle stroke 掠 lüè as in 永
• The 7th principle stroke 啄 zhuó as in 永

The only left-falling stroke in Radical 4, known as 撇 piě, is basic to Chinese calligraphy. It has two different forms, 掠 lüè and zhuó, in the eight principles of 永 (永字八法 Yǒngzì Bāfǎ).

• Fazzioli, Edoardo (1987). Chinese calligraphy : from pictograph to ideogram : the history of 214 essential Chinese/Japanese characters. calligraphy by Rebecca Hon Ko. New York: Abbeville Press. ISBN 0-89659-774-1.
• Leyi, Li (1993). Tracing the Roots of Chinese Characters: 500 Cases. Beijing. ISBN 978-7-5619-0204-2.{{cite book}}: CS1 maint: location missing publisher (link)

Wikimedia Commons has media related to Radical 004.

• Unihan Database - U+4E3F