Wing bolts or Wing screws are a type of fastener designed to be tightened and loosened by hand. Also known as wing thumb screws, or wing thumb bolts. they feature wing-like projections that form the head of the screw and provide thumb and forefinger leverage for turning. Wings provide more leverage than spade-head thumb screws for greater torque while tightening. they can be used with Wing Nuts to create an exceptional fastening that can be adjusted from various positions. Heatfastener offers a wide range of wing screws and wing nuts in inch and metric sizes. Available in plastic, aluminum, steel, and stainless steel. zinc plating finish or any custom wing bolts are available for any dimensions

Wing Bolts Screws Dimensions Sizes

Thread (d)		M3	M4	M5	M6	M8	M10
pitch(P)		0.5	0.7	0.8	1	1.25	1.5
dk	max	7.9	8	11	13	16	20
dk	min	7	6	8	10	13	17
d2	max	7.5	7	9	11	12.5	16.5
d2	min	6.5	5.5	7.5	9	10.5	14.5
H	max	19	20	26	33	39	51
	min	16	18	24	30	36	48
h	max	4	4.6	6.5	8	10	12
	min	3.3	3.2	4	5	6.5	8
y	max	3	1.6	2.3	2.3	2.8	4.4
	min	2.5	1.1	1.5	1.5	2	3.6
k	max	9.3	10.5	13	17	10	25
	min	8.3	8.5	11	15	18	23

DIN 316 Wing Screw Bolts

Thread Size	D	m4	m5	m6	m8	m10	m12	m16	m20	m24
P	Pitch	0.7	0.8	1	1.25	1.5	1.75	2	2.5	3
d2	max	8	11	13	16	20	23	29	35	44
	min	6	8	10	13	17	20	26	32	41
d3	max	7	9	11	12.5	16.5	19.5	23	29	37.5
	min	5.5	7.5	9	10.5	14.5	17.5	21	27	35
e	max	20	26	33	39	51	65	73	90	110
	min	18	24	30	36	48	62	70	86	106
g	max	1.9	2.3	2.3	2.8	4.4	4.9	6.4	6.9	9.4
	min	1.1	1.5	1.5	2	3.6	4.1	5.6	6.1	8.6
G	max	2.3	2.8	3.3	4.4	5.4	6.4	7.5	8	10.5
	min	1.7	2.3	2.7	3.6	4.6	5.6	6.5	7	9.5
h	max	10.5	13	17	20	25	33.5	37.5	46.5	56.5
	min	8.5	11	15	18	23	31	35	44	53.5
m	max	4.6	6.5	8	10	12	14	17	21	25
	min	3.2	4	5	6.5	8	10	13	16	20
a	max	2.1	2.4	3	4	4.5	5.3	6	7.5	9
r1	≈	3	4	5	6	8	10	11	14	18
r2	≈	/	/	/	/	1	1	1.2	1.6	2.5
r3	≈	0.5	1	1	1	1.2	1.2	1.6	2	2.5
r4	≈	2	2.5	3	3	5	6	7	8	9

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