DIN 7983 C - Countersunk (Flat) Head Tapping Screws with Cross Recess, Form C

Current norm: DIN ISO 7051
Equivalent norms: ISO 7051; CSN 021239; UNI 6956;

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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
PHU KASTAL Katarzyna Abrahamowicz	Warszawa	Poland
ATLAS-Befestigungstechnik GmbH	Herdecke	Germany
DGD S.R.L.	Cluj-Napoca	Romania
FABORY Nederland B.V.	Tilburg	Netherlands

Legend:

l - length of bolt
d - the nominal diameter of the thread
k - head height
d1 - head diameter

Makings:

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

Notes:
-

Table according to ISO 7051:

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
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
Cross recess		No.	1	1	2	2	2	2	3	3
Type H	m	approx.	2,8	3,4	4,6	4,7	4,9	5,4	7	7,4
	Penetration deptd	min.	1,17	1,81	1,89	2,04	2,24	2,7	3,02	3,46
	Penetration deptd	max.	1,57	2,21	2,39	2,54	2,74	3,2	3,53	3,96
Type Z	m	approx.	2,4	3,1	4,3	4,4	4,6	5,1	6,6	7,1
	Penetration deptd	min.	1,1	1,83	1,88	2	2,26	2,69	2,92	3,4
	Penetration deptd	max.	1,35	2,08	2,34	2,46	2,72	3,15	3,38	3,86
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

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							5,97	7,96
38	36,7	39,3	36,7	38						4,52	6,45	8,82

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Product	Date	Country	Detail
DIN 7983-A2-BL 2,2 mm x 9,5	2024-05-18 08:43:20	Germany	See Detail
DIN 7983 C screws - stainless steel - for Bulgaria	2021-06-15 13:04:10	Bulgaria	See Detail
DIN 7983 TX A2 4,2x45 200 000pcs	2021-05-04 08:59:26	Sweden	See Detail
DIN 7983 Form H type F Stainless steel	2020-01-16 16:17:17	Canada	See Detail

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