Hexagon high-strength bolt

Case Number : HHSB

Hexagon high-strength bolt

Function: High strength bolt belongs to a kind of standard parts. After first tight and end tight construction, it is generally used for permanent connection.

Application: Application on the steel structure engineering, steel structure steel plate used to connect to the join points.

GB/T1228 Steel structure has high strength large hexagon head bolts type Size

Hexagon high-strength bolt.jpg

Thread specifications-d		M12		M16		M20		M22		M24		M27		M30
Screw pitch P		1.75		2		2.5		2.5		3		3		3.5
c	max	0.8		0.8		0.8		0.8		0.8		0.8		0.8
	min	0.4		0.4		0.4		0.4		0.4		0.4		0.4
da	max	15.23		19.23		24.32		26.32		28.32		32.84		35.84
ds	max	12.43		16.43		20.52		22.52		24.52		27.84		30.4
	min	11.57		15.57		19.48		21.48		23.48		26.16		29.16
dw	min	19.2		24.9		31.4		33.3		38		42.8		46.5
e	min	22.78		59.56		37.29		39.55		45.2		50.85		55.37
k	nominal	7.5		10		12.5		14		15		17		18.7
	max	7.95		10.75		13.4		14.9		15.9		17.9		19.75
	min	7.05		9.25		11.6		13.1		14.1		16.1		17.65
r	min	1		1		1.5		1.5		1.5		2		2
s	max	21		27		34		36		41		46		50
	min	20.16		26.16		33		35		40		45		49
b	L nominal	<45	≥45	<55	≥55	<65	≥65	<70	≥70	<75	≥75	<80	≥80	<85	≥85
	nominal	25	30	30	35	35	40	40	45	45	50	50	55	55	60

Mechanical behavior

Grade	Tensile strength	Yield strength σ0.2	Elongation δ5	Shrinking percentage Ψ
	σь	Mpa	%	%
	Mpa	min
10.9S	1040~1240	940	10	42
8.8S	830~1030	660	12	45

Loading force

Thread specifications-d		M12	M16	M20	M22	M24	M27	M30
Pressed force section mm²		84.3	157	245	303	353	459	561
Pull force KN	10.9S	87.7~104.5	163~195	255~304	315~376	367~438	477~569	583~696
Pull force KN	8.8S	70.0~86.8	130~162	203~252	251~312	293~364	381~473	466~578

Materials

Hexagon high-strength bolt

Hexagon high-strength bolt

Mechanical behavior

Loading force