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UNI 7688 - 1977

Cross Recessed Countersunk Head Screws

UNI 7688 - 1977 十字槽沉头螺钉

See all versions and complete specifications: Cross Recessed Countersunk Head Screws — Full Specification Page

Equivalent & Cross-Reference Standards

Standard Body	Standard Number
GB	GB /T 819.1
NF	NF E 25-119-1
DIN	DIN EN ISO 7046-1
ISO	ISO 7046-1
UNI	UNI 7688

Dimensional Specifications — UNI 7688 - 1977 (mm)

Size	P	k_max	k_min	s_max	s_min	k_nominal	ds_nominal
M3	0.7	2	4.4	7.5	7.14	2.2	4.2
M4	1.5	4	9.6	18	17.57	5	9.4
M2.5	0.5	1	2.9	5.6	5.3	1.65	3
(M3.5)

Related Standards

GB /T 819.1 - 2016— Countersunk Flat Head Screws (Common Head Style) with Cross Recess - Part 1: Property Class 4.8 GB /T 819.2 - 2016— Countersunk Flat Head Screws with Cross Recess - Part 2: Property Class 8.8, Stainless Steel Screws and Non-ferrous Metal Screws GB /T 819.1 - 2000— Countersunk Flat Head Screws (Common Head Style) with Cross Recess - Part 1: Property Class 4.8 GB /T 819.2 - 1997— Cross Recessed Countersunk Flat Head Screws (Common Head Style) - Grade A - Part 2: Steel of Property Class 8.8, Stainless and Non-Ferrous Metals GB /T 13806.1 (B) - 1992— Cross Recessed Countersunk Screws for Fine Mechanics GB 819 - 1985— Cross Recessed Countersunk Head Screws GB 819 - 1976— Cross Recessed Countersunk Head Screws

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