This standard specifies the type and size of single-button broach guide sleeves. The broach guide bush specified in this standard is applicable to GB/T 14329.2-1993 "Types and dimensions of keyway broaches with widened flat blade body", GB/T 14329.3-1993 "Types and dimensions of keyway broaches with chamfered teeth" and GB /T 14329.1-1993 "Flat cutter body keyway broach type and size" is used in conjunction with GB/T 1095-1979 "Flat keys, keys and keyway cross-sectional dimensions" to process keyways with a width of 3 to 32mm.