Cross-recessed (+) upset head machine screw (hex head)

Brand :

SUNCO

Caution

Please note that if the mating part is to be prepared by the customer, it will not fit unless it is over-tapped according to the standard.
Since hot-dip galvanizing results in a very thick coating, please select a product with the same surface treatment for the mating component.
The product images are representative only. Specifications may vary by part number, including shape and color.
*"Other special treatment" under "Surface treatment" refers to the following specifications.
3W-ZEC: ZEC coat - trivalent white undercoat
3B-ZEC: ZEC coat - trivalent black undercoat
AEN: ZEC Coating - Zinc Plating Base

Product Description

[Material] SWCH equivalent / brass / SUS304 equivalent / stainless steel / steel
[Surface Treatment] Chromium-free (zinc plating) / Black / Chromium-free white / Chromium-free black / Trivalent black / Trivalent white / bright chromate plating / hot-dip galvanizing / chromate plating / green chromate / black chromate / nickel plating / chrome plating / Dacrotized / dark bronze color plating / trivalent stainless coat / stainless steel finish plating / black coating / temper color / temper color (dark) / other special treatments / anti-loosening agent coating / anti-seizure coating / None
[Thread Nominal (M)] 2/3/4/5/6/8/10/12

Drawing

Specifications Table

Nominal thread size	Cross-recessed Number	s		e	k		m	q		r
Nominal thread size	Cross-recessed Number	Reference dimension	Tolerance	Reference	Reference dimension	Tolerance	Reference	Maximum	Minimum	Minimum
M3	2	5.5	0 -0.2	6.05	2.0	+/- 0.1	3.5	1.43	0.91	0.1
M3.5		6.0		6.6	2.4		3.5	1.43	0.91	0.1
M4		7.0		7.7	2.8		4.0	1.93	1.40	0.2
M5		8.0		8.7	3.5	+/- 0.15	4.8	2.73	2.19	0.2
M6	3	10.0		10.9	4.0		6.2	2.86	2.30	0.25
M8	3	13.0	0 -0.25	14.1	5.5		7.2	3.86	3.20	0.4
M10	4	17.0	0 -0.25	18.9	7.0	+/- 0.2	9.25	4.95	4.15	0.4