CREATE TABLE table_29160 ("Chambering" TEXT, "P1 diameter  ( mm ) " TEXT, "A external  ( cm 2  ) " TEXT, "P max  (  bar  ) " FLOAT, "F bolt  (  kgf  ) " FLOAT, "F bolt" TEXT)

What is the chambering for the 8339 f bolt ( kgf )?
SELECT "Chambering" FROM table_29160 WHERE "F bolt ( kgf )" = '8339'
SELECT "Chambering" FROM "table_29160" WHERE "F bolt ( kgf )" = '8339'