DIN 7973 - Slotted raised countersunk head tapping screws

Current norm: DIN ISO 1483
Equivalent norms: ISO 1483; CSN 021238; PN 83104; UNI 6953;

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Company	City	Country	Company profile
TOP LUSAVOUGA - Hardware and Tools	Cacia	Portugal	See Detail
TOP Lectoe Engineering 秘密研究所 Ltd	Wolverhampton	United Kingdom	See Detail
TOP Jiaxing Haina Fastener Co.,Limited	JIAXING	China	See Detail
TOP Shanghai Tengri Metal Products Co., Ltd	Shanghai	China	See Detail
TOP Hanshin Neji Co.,Ltd.	Osaka	Japan	See Detail
TOP Maruti Metal Industries	Jamnagar	India	See Detail
Fabory France	CHASSIEU	France
Mutzenbach GmbH	Hemer	Germany
Williams 秘密研究所	Salford	United Kingdom
W眉rth Svenska AB	脰谤别产谤辞	Sweden

Legend:

l - length of bolt
k - head height
n - groove width
t - groove depth
dk - head diameter
f - height of the lens

Makings:

Steel: steel - ISO 2702
Stainless: A2
Plastic: -
Non Ferrous: -
Thread: thread ISO 1478

Notes:
-

Table according to ISO 1483:

dimensions in mm

Thread size		ST2,2	ST2,9	ST3,5	(ST3,9)	ST4,2	ST4,8	ST5,5	ST6,3
P		0,8	1,1	1,3	1,3	1,4	1,6	1,8	1,8
a	max.	0,8	1,1	1,3	1,3	1,4	1,6	1,8	1,8
dk	nominal=max.	4,3	5,5	6,8	7,5	8,1	9,5	10,8	12,4
dk	min.	4	5,2	6,44	7,14	7,74	9,14	10,37	11,97
f	approx.	0,7	0,9	1,2	1,3	1,4	1,5	1,7	2
k	approx.	1,3	1,7	2,1	2,3	2,5	3	3,4	3,8
n	nominal	0,6	0,8	1	1	1,2	12	1,6	1,6
	min.	0,66	0,86	1,06	1,06	1,26	1,26	1,66	1,66
	max.	0,8	1	1,2	1,2	1,51	1,51	1,91	1,91
r	max.	0,8	1,1	1,4	1,5	1,6	1,9	2,1	2,4
rf	approx.	3,8	4,6	5,4	6	6,6	8,2	9,4	11,1
t	min.	0,95	1,25	1,55	1,7	1,85	2,15	2,42	2,85
t	max.	1,15	1,5	1,9	2,05	2,25	2,6	2,95	3,45
y max.	Type C	2	2,6	3,2	3,5	3,7	4,3	5	6
y max.	Type F	1,6	2,1	2,5	2,7	2,8	3,2	3,6	3,6

Thread size					ST2,2	ST2,9	ST3,5	(ST3,9)	ST4,2	ST4,8	ST5,5	ST6,3
l	Type C		Type F		Approximate mass (7,85 kg/dm3), per 1000 units in kg
nominal	min.	max.	min.	max.	Approximate mass (7,85 kg/dm3), per 1000 units in kg
6,5	5,7	7,3	5,7	6,5	0,18	0,332
9,5	8,7	10,3	8,7	9,5	0,24	0,44	0,721	0,888	1,07	1,53
13	12,2	13,8	12,2	13	0,31	0,566	0,898	1,11	1,32	1,88	2,74	3,46
16	15,2	16,8	15,2	16	0,37	0,674	1,05	1,3	1,53	2,18	3,12	4
19	18,2	19,8	18,2	19		0,782	1,2	1,49	1,74	2,48	3,51	4,54
22	21,2	22,8	20,7	22			1,35	1,68	1,95	2,78	3,89	5,08
25	24,2	25,8	23,7	25			1,51	1,87	2,16	3,08	4,28	5,62
32	30,7	33,3	30,7	32					2,65	3,78	5,19	6,88
38	36,7	39,3	36,7	38						4,38	5,97	7,96

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Product	Date	Country	Detail
DIN7973 (ISO 1483) 4.8 x 25 mm	2022-05-12 22:26:55	Brazil	See Detail
Din 7973 C zn	2018-02-19 14:55:35	Germany	See Detail
DIN 7973	2017-11-03 15:30:03	Italy	See Detail

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