DIN933/931 GB5782/5783 BLACK/GALVANIZED HEXAGON BOLTS

Hex bolts are used to fasten two or more parts together to form an assembly either because it cannot be manufactured as a single part or to allow for maintenance and repair disassembly.Hex bolts are mostly used in repair and construction work. they have a hexagonal head and come with machine threads for a firm and rough handling. They come in a wide range of different hex bolt sizes for custom applications depending on its dimensional requirements. These Hex Bolts come in the anti-corrosion stainless steel, alloy steel and carbon steel materials which ensures that the structure doesn’t weaken because of rust. Depending on the length of the bolt, it can come with standard threading or full threading.

Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. Black ultra-corrosion-resistant-coated steel screws resist chemicals and withstand 1,000 hours of salt spray.Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.

The bolt head is designed to fit a ratchet or spanner torque wrenches allowing you to tighten the bolt to your exact specifications. Hex head bolts are typically used to create a bolted joint, in which a threaded shaft exactly fits a corresponding tapped hole or nut. Grade 2 bolts tend to be used in construction for joining wood components. Grade 4.8 bolts are used in small engines. Grade 8.8 10.9 or 12.9 bolts provide high tensile strength. One advantage bolts fasteners have over welds or rivets is that they allow for easy disassembly for repairs and maintenance.

thread specification d					M1.6	M2		M2.5		M3		(M3.5)		M4		M5		M6		(M7)		M8		M10		M12		(M14)		M16
P	pitch				0.35	0.4		0.45		0.5		0.6		0.7		0.8		1		1		1.25		1.5		1.75		2		2
a	Maximum value				1.05	1.2		1.35		1.5		1.8		2.1		2.4		3		3		3.75		4.5		5.25		6		6
c	minimum value				0.1	0.1		0.1		0.15		0.15		0.15		0.15		0.15		0.15		0.15		0.15		0.15		0.15		0.2
	Maximum value				0.25	0.25		0.25		0.4		0.4		0.4		0.5		0.5		0.5		0.6		0.6		0.6		0.6		0.8
da	Maximum value				2	2.6		3.1		3.6		4.1		4.7		5.7		6.8		7.8		9.2		11.2		13.7		15.7		17.7
dw	A level		minimum value		2.4	3.2		4.1		4.6		5.1		5.9		6.9		8.9		9.6		11.6		15.6		17.4		20.5		22.5
	B level		minimum value		-	-		-		-		-		5.7		6.7		8.7		9.4		11.4		15.4		17.2		20.1		22
e	A level		minimum value		3.41	4.32		5.45		6.01		6.58		7.66		8.79		11.05		12.12		14.38		18.9		21.1		24.49		26.75
	B level		minimum value		-	-		-		-		-		7.5		8.63		10.89		11.94		14.2		18.72		20.88		23.91		26.17
k	nominal				1.1	1.4		1.7		2		2.4		2.8		3.5		4		4.8		5.3		6.4		7.5		8.8		10
	A level		minimum value		0.98	1.28		1.58		1.88		2.28		2.68		3.35		3.85		4.65		5.15		6.22		7.32		8.62		9.82
			Maximum value		1.22	1.52		1.82		2.12		2.52		2.92		3.65		4.15		4.95		5.45		6.56		7.68		8.98		10.18
	B level		minimum value		-	-		-		-		-		2.6		3.26		3.76		4.56		5.06		6.11		7.21		8.51		9.71
			Maximum value		-	-		-		-		-		3		3.74		4.24		5.04		5.54		6.69		7.79		9.09		10.29
k1	minimum value				0.7	0.9		1.1		1.3		1.6		1.9		2.28		2.63		3.19		3.54		4.28		5.05		5.96		6.8
r	minimum value				0.1	0.1		0.1		0.1		0.1		0.2		0.2		0.25		0.25		0.4		0.4		0.6		0.6		0.6
s	Maximum value =nominal				3.2	4		5		5.5		6		7		8		10		11		13		17		19		22		24
	A level		minimum value		3.02	3.82		4.82		5.32		5.82		6.78		7.78		9.78		10.73		12.73		16.73		18.67		21.67		23.67
	B level		minimum value		-	-		-		-		-		6.64		7.64		9.64		10.57		12.57		16.57		18.48		21.16		23.16
Thousand pieces of steel weight   ≈kg					-	-		-		-		-		-		-		-		-		-		-		-		-		-
thread specification d					(M18)		M20		(M22)		M24		(M27)		M30		(M33)		M36		(M39)		M42		(M45)		M48		(M52)
P		pitch			2.5		2.5		2.5		3		3		3.5		3.5		4		4		4.5		4.5		5		5
a		Maximum value			7.5		7.5		7.5		9		9		10.5		10.5		12		12		13.5		13.5		15		15
c		minimum value			0.2		0.2		0.2		0.2		0.2		0.2		0.2		0.2		0.3		0.3		0.3		0.3		0.3
		Maximum value			0.8		0.8		0.8		0.8		0.8		0.8		0.8		0.8		1		1		1		1		1
da		Maximum value			20.2		22.4		24.4		26.4		30.4		33.4		36.4		39.4		42.4		45.6		48.6		52.6		56.6
dw		A level		minimum value	25.3		28.2		30		33.6		-		-		-		-		-		-		-		-		-
		B level		minimum value	24.8		27.7		29.5		33.2		38		42.7		46.5		51.1		55.9		59.9		64.7		69.4		74.2
e		A level		minimum value	30.14		33.53		35.72		39.98		-		-		-		-		-		-		-		-		-
		B level		minimum value	29.56		32.95		35.03		39.55		45.2		50.85		55.37		60.79		66.44		71.3		76.95		82.6		88.25
k		nominal			11.5		12.5		14		15		17		18.7		21		22.5		25		26		28		30		33
		A level		minimum value	11.28		12.28		13.78		14.78		-		-		-		-		-		-		-		-		-
				Maximum value	11.72		12.72		14.22		15.22		-		-		-		-		-		-		-		-		-
		B level		minimum value	11.15		12.15		13.65		14.65		16.65		18.28		20.58		22.08		24.58		25.58		27.58		29.58		32.5
				Maximum value	11.85		12.85		14.35		15.35		17.35		19.12		21.42		22.92		25.42		26.42		28.42		30.42		33.5
k1		minimum value			7.8		8.5		9.6		10.3		11.7		12.8		14.4		15.5		17.2		17.9		19.3		20.9		22.8
r		minimum value			0.6		0.8		0.8		0.8		1		1		1		1		1		1.2		1.2		1.6		1.6
s		Maximum value =nominal			27		30		32		36		41		46		50		55		60		65		70		75		80
		A level		minimum value	26.67		29.67		31.61		35.38		-		-		-		-		-		-		-		-		-
		B level		minimum value	26.15		29.16		31		35		40		45		49		53.8		58.8		63.1		68.1		73.1		78.1
Thousand pieces of steel weight ≈kg					-		-		-		-		-		-		-		-		-		-		-		-		-