B21K   1/00		Ǥ¤	Making machine elements	750
B21K   1/02		塤롤ޤϥ顼㡥٥󥰤ΤΤ	balls, rolls, or rollers, e.g. for bearings	881
B21K   1/04		ܡ졼	ball-races	1175
B21K   1/05		ݻΣ	cages for bearings	303
B21K   1/06		ޤϥե	axles or shafts	1790
B21K   1/08		󥯥ե	crankshafts	1084
B21K   1/10		Τ	of cylindrical form	364
B21K   1/12		̤̤ʷ򤷤	of specially-shaped cross-section	727
B21K   1/14		ն	fittings	1354
B21K   1/16		ѥפޤϥۡѼ	parts of pipe or hose couplings	563
B21K   1/18		ԥȥޤϥץ󥸥㡼	pistons or plungers	565
B21K   1/20			valve parts	688
B21K   1/22		ݥڥåۡ㡥ǳ	poppet valves, e.g. for internal-combustion engines	494
B21K   1/24		Ρۺ	valve bodies; valve seats	524
B21K   1/26		ϥ󥰤ޤϻٻʡ㡥ϥ󥰡󥸥ն	housings or supporting parts, e.g. axle housings, engine mountings	348
B21K   1/28		ءǥ	wheels; discs	911
B21K   1/30		֤Ĥ	with gear-teeth	3092
B21K   1/32		ǥ㡥ǥ	discs, e.g. disc wheels	732
B21K   1/34		ݡ	wheels with spokes	61
B21K   1/36		Ĥ	with blades	135
B21K   1/38		ࡨ	rims; tyres	319
B21K   1/40		ϥ	hubs	639
B21K   1/42		ס꡼㡥֥ס꡼	pulleys, e.g. cable pulleys	208
B21K   1/44		ܥȡåɡޤϤहΡʥͥη£ˣեܥȤ¤£ˣ	bolts, studs, or the like(making screw-thread <b>B21K1/56</b>; making U-bolts <b>B21K1/74</b>)	2508
B21K   1/46		ƬĤ	with heads	1754
B21K   1/48		ϥޤäù㡥ƬΤμǷ	Machines working with hammers, e.g. beating in a radial direction, for forming heads	386
B21K   1/50		ƬΥȥߥ󥰤ޤϤǡ㡥ˤž夲	Trimming or shearing formed heads, e.g. working with dies	288
B21K   1/52		ξüù㡥ξ¦ƬͭΡƬη£ˣ	double-ended, e.g. with heads on both ends(forming heads <b>B21K1/46</b>)	95
B21K   1/54		¤ޤϥΥåΤ	with grooves or notches	189
B21K   1/56		ͥǡΣ	screw-threaded elements	948
B21K   1/58		٥å	rivets	627
B21K   1/60		ޤȾ٥å	hollow or semi-hollow rivets	194
B21K   1/62		̤ʥ٥åȡ㡥ŵĤ	special rivets, e.g. with electrical contacts	146
B21K   1/64		ʥåȡʥͥη£ˣ	nuts(making screw-thread <b>B21K1/56</b>)	1122
B21K   1/66		ӾफΤ	from strip bars	64
B21K   1/68		ޤϳΤ	from round or profiled bars	322
B21K   1/70		üΤΡ㡥ɤߥʥåȡĳʥå	of special shape, e.g. self-locking nuts, wing nuts	794
B21K   1/72		եå㡥졼ѥեåƻѸţţ¤̣£ǡ	hooks, e.g. crane hooks, railway track spikes(making nails in general <b>B21G</b>)	146
B21K   1/74		եʤޤϣʾΥäʡ㡥եܥȡ󥫡	forked members or members with two or more limbs, e.g. U-bolts, anchors	330
B21K   1/76		Υ롼פΰĤ󤵤ʤ	elements not mentioned in one of the preceding groups	2443
B21K   3/00		Υ֥롼פޤʤ󥸥ޤϤ뵡ʤ¤ץڥޤϤहΤ¤	Making engine or like machine parts not covered by <b>B21K1/00</b>; Making propellers or the like	526
B21K   3/02		إå	cylinder heads	44
B21K   3/04		㡤㡥ӥѡΤĤΥåץå	blades, e.g. for turbines; Upsetting of blade roots	962
B21K   5/00		ޤϹʤ¤㡥ץ饤䡼	Making tools or tool parts, e.g. pliers	348
B21K   5/02		ɥޤϤ¾򤢤ޤϻž夲빩	drilling-tools or other tools for making or working on holes	300
B21K   5/04		ͤ칩㡥ɥ롤꡼	twisting-tools, e.g. drills, reamers	286
B21K   5/06		ɥå󥰡㡥åɥθ	Dressing, e.g. sharpening rock drills	361
B21K   5/08		޹ѹ	drifting tools	18
B21K   5/10		ɥӥåȥ󥯤	Forming drill-bit shanks	35
B21K   5/12		¾ǹʲѿʪٹʣ£ˣ	other cutting tools(cutlery wares <b>B21K11/00</b>)	137
B21K   5/14		ϥޡ	hand hammers	36
B21K   5/16		ʥåȤޤ魯ι	tools for turning nuts	186
B21K   5/18		ϥɥȤ	handles or parts therefor	28
B21K   5/20		ޤ̤ͭλžù	Making working faces of dies, either recessed or outstanding	317
B21K   7/00		Ŵƻ°ʤ¤ξʤ¤	Making railway appurtenances; Making vehicle parts	396
B21K   7/02		ƻΤʡʸţ£ˣ	parts for permanent way(spikes <b>B21K1/72</b>)	110
B21K   7/04		žƤĴü	switch tongues	27
B21K   7/06		꡼ѡ	sleepers	9
B21K   7/08		졼Υ١ץ졼ȡ㡥	base plates for rails, e.g. chairs	27
B21K   7/10		졼른祤	rail joints	28
B21K   7/12		ؼ֤ޤϼξΤʡ㡥ե졼ࡤե졼	parts for locomotives or vehicles, e.g. frames, underframes	709
B21K   7/14		֥졼Ѻޤϥ֥졼ʡΣ	brake rigging or brake parts	84
B21K   9/00		Ŵƻ°ʡ㡥졼롤ν	Reconditioning railroad accessories, e.g. rails	157
B21K  11/00		ѿʪٹʤ¤ޤϤह	Making cutlery wares; Making garden tools or the like	352
B21K  11/02		ʥ	knives	173
B21K  11/04		ס󡨥ơ֥ե	spoons; table forks	38
B21K  11/06		Ϥ	scissors	27
B21K  11/08		ޡ𤫤꤬	sickles; scythes	13
B21K  11/10		ΡĤϤ	axes; picks	16
B21K  11/12		Ƨߤ٥	spades; shovels	17
B21K  11/14		ޤǡǥե	rakes; garden forks	15
B21K  13/00		ʤ¤㡥Ȣμ	Making locksmiths' goods, e.g. handles for cases	71
B21K  13/02		礦Ĥ	hinges	116
B21K  15/00		ʤ¤	Making blacksmiths' goods	14
B21K  15/02		°	horse-shoes; accessories therefor	172
B21K  15/04		ŴΤ٤ߤ᤯	caulks	19
B21K  15/06		ϤʪΤζ°°ʡ㡥	metal attachments for footwear, e.g. wear-resisting plates	10
B21K  17/00		ݡʪʡ㡥ȡ¤	Making sport articles, e.g. skates	193
B21K  19/00		ʪʤ¤	Making articles for agricultural machinery	130
B21K  19/02		ġ٤	plough blades; ploughshares	36
B21K  21/00		롼ף£ˣ£ˣñΥ֥롼פޤʤʪʤ¤ܼŪĺޤ϶Ѱδɤ¤£ġ㡥£ģ£ģ	Making hollow articles not covered by any single one of groups <b>B21K1/00 to B21K19/00</b> (essentially from sheet-metal or uniform thin-walled tubes <b>B21D</b>, e.g. <b>B21D41/00</b>, <b>B21D51/00</b>)	915
B21K  21/02		ʪʤ¤뤿ȾùʤȤƤα׾ޤ˹Ǻ¤㡥ʤޤϲФѤǺ	Producing blanks in the shape of discs or cups as semi-finished articles for making hollow articles, e.g. to be deep-drawn or extruded	240
B21K  21/04		ʪʤη㡥	Shaping thin-walled hollow articles, e.g. cartridges	326
B21K  21/06		ʪʤη㡥ƴ	Shaping thick-walled hollow articles, e.g. projectiles	590
B21K  21/08		˰ۤʤäѤäʪʤη㡥Υ롤ѡץ饰	Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs	749
B21K  21/10		߿ޤϥ٥ʪʡ㡥󥷥졼å	cone-shaped or bell-shaped articles, e.g. insulator caps	106
B21K  21/12		ʪʤü	Shaping end portions of hollow articles	502
B21K  21/14		̩Ĥޤϼ¼Ū̩Ĥ줿üĤΡ㡥貤	closed or substantially-closed ends, e.g. cartridge bottoms	142
B21K  21/16		̤ηˤĤƤʪΤβ¤üβ¤£ˣ	Remodelling hollow bodies with respect to the shape of the cross-section(remodelling end portions only <b>B21K21/12</b>)	370
B21K  23/00		¾ʪ¤	Making other articles	736
B21K  23/02		̵µƻʡ㡥ƻɡĺफ¤£ġ	members of endless tracks, e.g. track guides, shoes(making from sheet-metal <b>B21D</b>)	101
B21K  23/04		եդʡʣ£ˣͥ表եմɣ£ġ	flanged articles(<b>B21K1/28</b> takes precedence; flanging tubes <b>B21D</b>)	466
B21K  25/00		Ūࡤ㡥ӥ֤ȥեȡΤ뤹٤ߤţ뤿ˡġιǤȼޤȼ鷺ˤ礹뤳ȡʤޤФޤϥץ쥹Фˤ£У£У	Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components(uniting by interference- or press-fitting <b>B23P11/02</b>, <b>B23P19/02</b>)	1945
B21K  27/00		֡㡥ߡФ֡ˡ	Handling devices, e.g. for feeding, aligning, discharging; Cutting-off means; Arrangement thereof	4717
B21K  27/02		ȥåפζ	Feeding devices for rods, wire, or strips	1313
B21K  27/04		Ϣ³Ȥ	allowing successive working steps	558
B21K  27/06		ˡ	Cutting-off means; Arrangement thereof	1301
B21K  29/00		βǮޤѤΤ֡¤ޤϥץ쥹Ѷ°ǺѰդ뤿֣£ʣǮְ̤Ŭڤʥ֥饹㡥ȣ¡򻲾ȡ	Arrangements for heating or cooling during processing(for preparing metal stock to be forged or pressed <b>B21J1/06</b>; heating equipment in general, <u>see</u> the appropriate subclasses, e.g. <b>H05B</b>)	4561
B21K  31/00		񥭥䡼ΰĴ	Control devices specially adapted for positioning tool carriers	92
