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Grade 8.8 Bolts

Size Range : M5 to M80
Property Class : Class 8.8
Strength : Medium Strength
WNR : 1.4841
Uses : Nuclear Power Plants
Threads : Coarse, Fine And Extra Fine Thread
Thread Options : DIN 933 Full & DIN 931 Partial Thread

Thread Direction : Right Hand
Sizes Can Be Manufacture : Up to M100
Drive Type : External Hex
Sample : Free Sample Available
Designed For : Construction And Automotive
Also Called : High Strength Bolts

Class 8.8 Hex Bolts Manufacturer in India in M4 to M80

Why Choose Dalloyed Fasteners for Grade 8.8 Bolts ?

Custom Manufacturing
Corrosion Resistance
International Adherence To Regulations
Quick Shipping And Bulk Orders

Where We Have Supplied

Phillips 66

M7, Grade 8.8 Carbon Steel Bolt (800 QTY)
Houston, Texas, U.S.

Tullow Oil

M78, Grade 8.8 Countersunk Screw (700 QTY)
London, United Kingdom

Bolt Grade 8.8 Specification

Size In Ready Stock

Screw Size = M1.2 To M48
Bolts Size : M1.2 To M120
Nut Size = M2 To M80
Stud Size = M4 To M100
Washer Size = M2 To M24

8.8 Bolts Head Style

Flat head
Button head
Round head
Hex head
Truss head

Neck Type of Class 8.8

Triangular Neck
Square Neck
Knurled Neck
Hex Neck

Threads Types of Grade 8.8

BSW
UNF
CBSF
UN

Head Drive of High Strength Grade 8.8

Phillips
Phillips/Slot
Six-Lobe
Slotted

8.8 High Strength Bolts and Nuts Ends Types

Flat or Saw Cut
Chamfered
Rounded
Sheared

M10 Class 8.8 Threaded Rod

Condition : Threading or Cold Drawn
Threads : Left and Right Hand, Both Side

M20 Class 8.8 Stud Bolts

End Types : Rounded, Flat and Saw Cut
Threads : Double End, Fully or Fine Threaded

8.8 Screws

Threads Pitch : Fine and Coarse
Head Shape : Round, Pan, Button

Class 8.8 Washers

Forms : A, D, C, G, B, E
Thickness : 0.002" to ½"

Manufacturing Process

Hot Forging
CNC Machine
Cold Forging

Advantages

Low Magnetic Permeability
Oxidation Resistance
Resistance to Sulfidation

Testing Requirements

Ultrasonic Examination Of Barstock
Magnetic Particle Inspection
Positive Material Identification

Application

Railways
Sewage Treatment
Petrochemical

Packaging Types

Wooden Cases
Custom
Carton Box

Raw Material

European
German
Janpanese

Grade 8.8 Bolt Dimensions

Nominal Diam	Effective Area	Flat Diam S		Diagonal e	Pitch P	Body Diam ds		Height k
d	Coarse mm 2	Min	Reference Dimension	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
d	Coarse mm 2	Min	Max	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
M5	14.2	7.78	8	8.79	0.8	4.8	5	3.65	3.35	3.5
M8	36.6	12.73	13	14.38	1.25	7.8	8	5.45	5.15	5.3
M12	84.3	17.73	18	20.03	1.75	12	12	7.68	7.32	7.5
M27	459	40	41	45.2	3	26	27	17.35	16.65	17
M36	817	53.8	55	60.79	4	35	36	22.92	22.08	22.5
M4	8.78	6.78	7	7.66	0.7	3.8	4	2.925	2.675	2.8
M6	20.1	9.78	10	11.05	1	5.8	6	4.15	3.85	4
M10	58	15.73	16	17.77	1.5	9.8	10	6.58	6.22	6.4
M14	115	20.67	21	23.36	2	14	14	8.98	8.62	8.8
M18	192	26.67	27	30.14	2.5	18	18	11.715	11.285	11.5
M24	35324	35.38	36	39.98	3	24	-	15.215	14.785	15

Trusted Source Of Grade 8.8 Nuts Which is Required for High Load Applications

8.8 Bolt Size In Inches

Metric Size	Diameter mm	Common Thread Pitches mm	Common Lengths mm	Imperial Size	Diameter inch	Common Thread Pitches TPI	Common Lengths inch
M3	3	0.5	20, 30	#4	7/64	48	3/4, 1-1/4
M5	5	0.8	30, 40	#8	3/16	32	1-1/4, 1-1/2
M8	8	1.25	50, 60	5/16	5/16	18	2, 2-1/2
M12	12	1.75	70, 80	1/2	1/2	13	3, 3-1/2
M2	2	0.4	16, 20	#2	5/64	56	5/8, 3/4
M4	4	0.7	25, 30	#6	1/8	40	1, 1-1/4
M6	6	1	40, 50	#10	7/32	24	1-1/2, 2
M10	10	1.5	60, 70	3/8	3/8	16	2-1/2, 3

Grade 8.8 Hex Bolts Price List

Diam	Thread	Price in Dollar	Price in United Arab Emirates Dirham
M4	0.7	$0.14	0.51
M6	1	$0.18	0.66
M8	1.25	$0.22	0.81
M12	1.75	$0.67	2.46
M3	0.5	$0.20	0.73
M5	0.8	$0.14	0.51
M7	1	$0.41	1.51
M10	1.5	$0.43	1.58

Buy 100% Tested Grade 8.8 Socket Head Cap Screw Supplier in India

Class 8.8 Hex Cap Screws Price List

Size	Price In Dollar	Price In United Arab Emirates Dirham
M6-1.0 X 16 mm	$0.09	0.33
M6-1.0 X 20 mm	$0.11	0.4
M6-1.0 X 30 mm	$0.14	0.51
M6-1.0 X 40 mm	$0.17	0.62
M6-1.0 X 50 mm	$0.21	0.77
M6-1.0 X 60 mm	$0.26	0.95
M6-1.0 X 70 mm	$0.27	0.99
M8-1.25 X 25 mm	$0.16	0.59
M8-1.25 X 30 mm	$0.33	1.21
M8-1.25 X 40 mm	$0.55	2.02
M8-1.25 X 50 mm	$0.58	2.13
M8-1.25 X 60 mm	$0.62	2.28
M8-1.25 X 70 mm	$0.47	1.73
M10-1.50 X 30 mm	$0.49	1.8
M10-1.50 X 40 mm	$0.53	1.95
M10-1.50 X 50 mm	$0.72	2.64
M10-1.50 X 60 mm	$0.86	3.16
M10-1.50 X 70 mm	$0.95	3.49
M10-1.50 X 80 mm	$1.38	5.07
M12-1.75 X 30 mm	$0.53	1.95
M12-1.75 X 40 mm	$0.61	2.24
M12-1.75 X 50 mm	$1.01	3.71
M12-1.75 X 60 mm	$1.20	4.41
M12-1.75 X 70 mm	$1.22	4.48
M12-1.75 X 80 mm	$1.30	4.77
M12-1.75 X 90 mm	$1.58	5.8
M14-2.0 X 30 mm	$0.91	3.34
M14-2.0 X 40 mm	$1.04	3.82
M14-2.0 X 50 mm	$1.07	3.93
M14-2.0 X 60 mm	$1.55	5.69
M14-2.0 X 70 mm	$1.54	5.66
M14-2.0 X 80 mm	$1.70	6.24
M14-2.0 X 90 mm	$1.79	6.57
M16-2.0 X 40 mm	$1.80	6.61
M16-2.0 X 50 mm	$1.89	6.94
M16-2.0 X 60 mm	$1.96	7.2
M16-2.0 X 70 mm	$1.98	7.27
M16-2.0 X 80 mm	$2.20	8.08
M16-2.0 X 90 mm	$3.55	13.04
M16-2.0 X 100 mm	$7.26	26.67
M20-2.5 X 40 mm	$2.41	8.85
M20-2.5 X 50 mm	$3.27	12.01
M20-2.5 X 60 mm	$3.60	13.22
M20-2.5 X 70 mm	$3.73	13.7
M20-2.5 X 80 mm	$3.81	13.99
M20-2.5 X 90 mm	$4.50	16.53
M20-2.5 X 100 mm	$5.44	19.98

How Are Class 8.8 Fasteners Manufactured ?

Grade 8.8 Bolt Length Chart

Size	Spanner mm	Diam mm	Thread Length Bolts over 125 mm	Thread Length Bolts under 125 mm
M8	13	8	28	22
M12	18	12	36	30
M20	30	20	52	46
M6	10	6	24	18
M10	16	10	32	26
M16	24	16	44	38
M24	36	24	60	54

Since 10 Years, Experts in Manufacturing Grade 8.8 Threaded Rod in India

Grade 8.8 Chemical Properties

Property Class	Material And Heat Treatment	Chemical Composition Limit					Tempering Temperature ⁰C
		C		S	P	Bb	min
		min	max	max	max	max	min
8.8f	Carbon Steel Tempered And Quenched	0,25	0,55	0,025	0,025	0,003	425
	Alloy Steel Tempered And Quenched	0,20	0,55	0,025	0,025
	Carbon Steel With Additives Tempered And Quenched	0,15e	0,40	0,025	0,025

ISO 898-1 Grade 8.8 Mechanical Properties

Mechanical Property		Stress at Non Proportional Elongation		Proof Strength Ratio	% Reduction Of Area After Fracture For Machined Test Pieces	Depth Of Complete Decarburization In The Thread	Impact Strength	Tensile Strength		Stress Under Proof Load	% Elongation After Fracture For Machined Test Pieces	Height Of Non Decarburized Thread Zone	Reduction Of Hardness After Retempering
Mechanical Property		Nom	Min	Proof Strength Ratio	Min	Max	Min	Nom	Min	Nom	Min	Min	Max
8.8	d≤ 16 mma	640	640	0,91	52	0,015	27	800	800	580	12	1/2 H1	20
8.8	d> 16 mmb	640	660	0,91	52	0,016	27	800	830	600	12	1/2 H1	21

Hardness Of 8.8 Grade Bolt

Physical Property		Vickers Hardness		Brinell Hardness		Rockwell Hardness
Physical Property		Min	Max	Min	Max	Min	Max
8.8	D ≤ 16 mma	250	320	245	316	22	32
8.8	D > 16 mmb	255	335	250	331	23	34

Check Grade 8.8 Flat Washer Torque Chart and Dimensions in M16, M20 and M30

M16 Grade 8.8 Bolt Dimensions

Nominal Diam	Effective Area	Flat Diam S		Diagonal e	Pitch P	Body Diam ds		Height k
d	Coarse mm 2	Min	Reference Dimension	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
d	Coarse mm 2	Min	Max	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
M16	157	23.67	24	26.75	2	16	16	10.18	9.82	10

M20 Grade 8.8 Bolt Dimensions

Nominal Diam	Effective Area	Flat Diam S		Diagonal e	Pitch P	Body Diam ds		Height k
d	Coarse mm 2	Min	Reference Dimension	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
d	Coarse mm 2	Min	Max	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
M20	245	29.67	30	33.53	2.5	20	20	12.715	12.285	12.5

M30 Grade 8.8 Bolt Dimensions

Nominal Diam	Effective Area	Flat Diam S		Diagonal e	Pitch P	Body Diam ds		Height k
d	Coarse mm 2	Min	Reference Dimension	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
d	Coarse mm 2	Min	Max	Min	Coarse	Min	Max	Max	Min	Standard Dimensions
M30	561	45	46	50.85	3.5	29	30	19.12	18.28	18.7

Grade 8.8 Bolt Shear Strength

Size	Class 8.8
	Shank	Thread Coarse
	Shank	Coarse	Fine
M 8	25	16	19
M 12	57	38	45
M 16	101	72	83
M 20	163	117	140
M 24	235	168	197
M 30	368	270	-
M 36	529	395	-
M 6	14	9	-
M 10	39	26	30
M 14	79	59	62
M 18	131	99	110
M 22	196	160	171
M 27	295	236	-
M 33	440	357	-
M 39	615	502	-

Grade 8.8 Bolt Proof Load

Nom Bolt Size	Grade 8.8 Bolts	Lamalloy
5/16	6300	7600
7/16	12800	15400
9/16	21800	26400
3/4	40100	48500
1	72700	87900
1 1/4	116300	140500
1 1/2	168600	203700
1/4	3800	4600
3/8	9300	11250
1/2	17000	20600
5/8	27100	32750
7/8	55400	67000
1 1/8	91600	110700
1 3/8	138600	167500