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圆螺纹 DIN 405

They are used in coupling gears and brake rods in railway waggons, valves, slides, fittings and by the fire brigade. The Knuckle Threads are insensitive to dirt and damages.
The flank angle is 30°

Nominal	Thread Size	Nominal	Bolt Thread	Nut Thread	Pitch	TPI
Diameter		Diameter	Minor Diameter	Minor Diameter	mm
		mm	mm	mm
Rd 8 x 1/10"	8.254	5.46	5.714	2.54	10
Rd 9 x 1/10"	9.254	6.46	6.714	2.54	10
Rd 10 x 1/10"	10.254	7.46	7.714	2.54	10
Rd 11 x 1/10"	11.254	8.46	8.714	2.54	10
Rd 12 x 1/10"	12.254	9.46	9.714	2.54	10
Rd 14 x 1/8"	14.318	10.825	11.142	3.175	8
Rd 16 x 1/8"	16.318	12.825	13.142	3.175	8
Rd 18 x 1/8"	18.318	14.825	15.142	3.175	8
Rd 20 x 1/8"	20.318	16.825	17.142	3.175	8
Rd 22 x 1/8"	22.318	18.825	19.142	3.175	8
Rd 24 x 1/8"	24.318	20.825	21.142	3.175	8
Rd 28 x 1/8"	28.318	24.825	25.142	3.175	8
Rd 30 x 1/8"	30.318	26.825	27.142	3.175	8
Rd 32 x 1/8"	32.818	28.825	29.142	3.175	8
Rd 34 x 1/8"	34.318	30.825	31.142	3.175	8
Rd 36 x 1/8"	36.318	32.825	33.142	3.175	8
Rd 38 x 1/8"	38.318	34.825	35.142	3.175	8
Rd 40 x 1/6"	40.423	35.767	36.19	4.233	6
Rd 42 x 1/6"	42.423	37.767	38.19	4.233	6
Rd 44 x 1/6"	44.423	39.767	40.19	4.233	6
Rd 46 x 1/6"	46.423	41.767	42.19	4.233	6
Rd 48 x 1/6"	48.423	43.767	44.19	4.233	6
Rd 50 x 1/6"	50.423	45.767	46.19	4.233	6
Rd 52 x 1/6"	52.423	47.767	48.1	4.233	6
Rd 55 x 1/6"	55.423	50.767	51.19	4.233	6
Rd 58 x 1/6"	58.423	53.767	54.19	4.233	6
Rd 60 x 1/6"	60.423	55.767	56.19	4.233	6
Rd 62 x 1/6"	62.423	57.767	58.19	4.233	6
Rd 65 x 1/6"	65.423	60.767	61.19	4.233	6
Rd 68 x 1/6"	68.423	63.767	64.19	4.233	6
Rd 70 x 1/6"	70.423	65.767	66.19	4.233	6
Rd 72 x 1/6"	72.423	67.767	68.19	4.233	6
Rd 75 x 1/6"	75.423	70.767	71.19	4.233	6
Rd 78 x 1/6"	78.423	73.767	74.19	4.233	6
Rd 80 x 1/6"	80.423	75.767	76.19	4.233	6
Rd 82 x 1/6"	82.423	77.767	78.19	4.233	6
Rd 85 x 1/6"	85.423	80.767	81.19	4.233	6
Rd 88 x 1/6"	88.423	83.767	84.19	4.233	6
Rd 90 x 1/6"	90.423	85.767	86.19	4.233	6
Rd 92 x 1/6"	92.423	87.767	88.19	4.233	6
Rd 95 x 1/6"	95.423	90.767	91.19	4.233	6
Rd 98 x 1/6"	98.423	93.767	94.19	4.233	6
Rd 100 x 1/6"	100.423	95.767	96.19	4.233	6
Rd 105 x 1/4"	105.635	98.65	99.285	6.35	4
Rd 110 x 1/4"	110.635	103.65	104.285	6.35	4
Rd 115 x 1/4"	115.635	108.65	109.285	6.35	4
Rd 120 x 1/4"	120.635	113.65	114.285	6.35	4
Rd 125 x 1/4"	125.635	118.65	119.285	6.35	4
Rd 130 x 1/4"	130.635	123.65	124.285	6.35	4
Rd 135 x 1/4"	135.635	128.65	129.285	6.35	4
Rd 140 x 1/4"	140.635	133.65	134.285	6.35	4
Rd 145 x 1/4"	145.635	138.65	139.285	6.35	4
Rd 150 x 1/4"	150.635	143.65	144.285	6.35	4
Rd 155 x 1/4"	155.635	148.65	149.285	6.35	4
Rd 160 x 1/4"	160.635	153.65	154.285	6.35	4
Rd 165 x 1/4"	165.635	158.65	159.285	6.35	4
Rd 170 x 1/4"	170.635	163.65	164.285	6.35	4
Rd 175 x 1/4"	175.635	168.65	169.285	6.35	4
Rd 180 x 1/4"	180.635	173.65	174.285	6.35	4
Rd 185 x 1/4"	185.635	178.65	179.285	6.35	4
Rd 190 x 1/4"	190.635	183.65	184.285	6.35	4
Rd 195 x 1/4"	195.635	188.65	189.285	6.35	4
Rd 200 x 1/4"	200.635	193.65	194.285	6.35	4