Sartaj Fastners Ludhiana, Punjab, India

Hexagon Head Coach Screw

DIN 571, ASME B18.2.1

Coach screws are meant for hardwood applications. They come with a square, flange or hexagonal head and a pointed tip in which the entire length of the screw is externally threaded as well. Their applications are in metal-to-metal or metal-to-sheet fastening. Mostly, they are also used on concrete surfaces for masonry. Coach screws also known as lag screws are large wood screws with tapered stem, large threads and with a sharp point.

Hexagon Head Coach Screw

Technical Specification
Size:	M4 – M16, #10 – 3/4”
Grade:	4.8, GR.A
Materials:	-
Finish:	-

THREAD			4	5	6	-7	8	10	12	16	20
ds		nominal size max.	4	5	6	7	8	10	12	16	20
ds		min.	3.52	4.52	5.52	6.42	7.42	9.42	11.3	15.3	19.3
da		max.	5	6	7.2	8.2	10.2	12.2	15.2	19.2	24.4
k		nominal size	2.8	3.5	4	5	5.5	7	8	10	13
		max.	3.1	3.88	4.38	5.38	5.88	7.45	8.45	10.45	13.9
		min.	2.5	3.13	3.63	4.63	5.13	6.55	7.55	9.55	12.1
s		nominal size	7	8	10	12	13	17	19	24	30
		max.	7	8	10	12	13	17	19	24	30
		min.	6.64	7.64	9.64	11.57	12.57	16.57	18.48	23.16	29.16
e		min.	7.5	8.63	10.89	13.07	14.2	18.72	20.88	26.17	32.95
l			Weight kg/1000pcs
Nominal Size	Min.	Max.	Weight kg/1000pcs
16	15.1	16.9	1.71	292
20	18.95	21.05	2.01	3.42	5.02
25	23.95	26.05	2.41	4.02	5.82		11.5
30	28.95	31.05	2.81	4.62	6.62		12.9	23.6
35	33.75	36.25	3.11	5.12	7.42		14.2	25.8	36.2
40	38.75	41.25	3.51	5.82	8.22		15.6	28	39.2
45	43.75	46.25			8.94		16.9	30	42.1
50	48.75	51.25			9.64		18.2	32.1	45.4	84.1
55	53.5	56.5			10.5		19.6	34.3	48.6	89.7
60	58.5	61.5			11.2		20.9	36.5	51.8	94.9	165
65	63.5	66.5					22.2	38.5	54.7	99.5	174
70	68.5	71.5					23.6	40.7	57.8	107	182
75	73.5	76.5					25	42.9	61	112	192
80	78.5	81.5					26.5	45.2	64.5	118	201
90	88.25	91.75					29.4	49.9	71	130	220
100	98.25	101.75					32	54	77.1	141	238
110	108.25	111.75							83.4	152	253
120	118.25	121.75							89.5	163	275
130	128	132								175	293
140	138	142								187	317
150	148	152								198	328
160	158	162								209	348
170	168	172									366
180	178	182									385
190	187.7	192.3									404
200	197.7	202.3									421

All measurements in millimeters (mm)

D1	S	E	K
M5	8	8.63	3.5
M6	10	10.89	4
M8	13	14.20	5.5
M10	17	18.72	7
M12	19	20.88	8
M16	24	26.17	10