Hangata barekisi ba khabone hangata ba koaheloa ke indasteri ea PTF (e khuts'oane bakeng sa polytetlafluoese) mme e sebetsa ka thata. Sae-aisi 1018, 1020, 1040, 1045 \
ck45 e tloaetse ho hlahisa li-fasteners tsena. Litlhaloso tsa indasteri tse kang ASTM A36, A193, A549, A549, A540, A549