Simplex Steel
Mail

sales@simplexsteel.com

M8 Hex Head Bolts

Manufacturer & supplier of M8 Hex Flange and Socket head Bolts, see dimensions and weight

Table Of Content:

 

m8 hex head bolts
M8 Hex Head Bolts

 

Bolts are a common example of a fastening device that come in a variety of forms, sizes, and materials. For instance, m8 hex bolts and nuts indicate that the fastener is 8mm in length in metric units. The M8 Hex Head Bolts have an 8mm diameter, just to be clear. When unscrewing hexagonal or hex bolts, a corresponding wrench is needed. The equivalent m8 hex bolt spanner size must therefore have an internal diameter of 8mm if the bolts' diameter is about 8mm.

This is required to make it simple to remove the Bolts. The use of a bigger m8 hex bolts wrench size makes the bolts loose, which prevents the appropriate attachment and, as a result, the removal of the bolts. On the other hand, if the spanner's inner diameter is smaller, it will not fit in the grooves of the 150mm M8 hex bolts. A hex bolt can be tightened using a variety of techniques, including torque inclination, m8 hex bolt torque, rotating angle, stretch measurement, and more.

A hexagon-shaped wrench can be used to tighten an Allan head bolt or a m8 hex socket bolt. The m8 hex head Bolts typically need to be tightened or loosen with a key. The m8 hex flange Bolts are secured or loosened using a hex-shaped spanner or wrench, similar to socket bolts. In order to distribute the load equally, flange bolts have a circular flange affixed below the head of such bolts.

 

Specification chart of M8 Hex Bolts
standards of British BS 57
standards of ISO ISO 10642
Length 3 millimeter- 200 millimeter
Size
  • Cold Froging : M2 to M24
  • Hot forging M24 to M100, 1-1/2” Diameter, up to 1100 millimeter long
  • CNC and Machining for Customized connecting element: up to M100 / 4” Diameter, up to 1500 millimeter long

M16, M5, M33, (M3.5), (M45), M20, M42, M4, (M22), (M27), (M14), M6, (M18), M36, M48, M12, M2, M3, M10, M24, M30, M8 M160 and as per need
Standard:
  • DIN 7983C ~ISO 7051
  • DIN 7973C ~ISO 1483
  • ISO 14585C ~DIN 7981C
  • ANSI B18.3.1M
  • ISO 14582, ISO 7050, ISO 2009, ISO 14587, ISO 14587, ISO 14584
  • GB/T5783, GB/T5782, GB5783
  • ASME B18.6.3

ASTM, ANSI , ISO, DIN, GB, JIS, BS, IS and all International Standards
Threads BSW, METRIC, UNC, BSF, UNF or as per need
UTS UNF, NPT, UNC, UNS, UNEF, NPTF
DIN Standard B.S. DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN916, DIN 7982, DIN 7985, DIN 913
Tolerance +/- 00.01 millimeter to +/- 00.05 millimeter
Dimensions ASME B18.6.3 **Exception: shorter are fully threaded and 6 inches screws
Type Round/ Pan/ Truss head/ Hex Head/ Oval
Head Phillips/Slot,Six-Lobe, Phillips, Slotted etc
Finishing


Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Stainless Steel, Sherardized, and some Geometry, Mechanically Applied coating, anodizing, Dacroment, plated zinc-nickel, nickel plated,
Stainless steel: Passivated
special one like DACROMET
black oxide, Zinc ( white, yellow, black, blue)
Head flat head, Pan head, hex head, oval head, phillips head
process of Production Cold Heading, Wire Drawing, Heat Treatment, Insert tapping, Inspection, Packing, Surface Plating
Finish ASTM A380/A380M
Manufacturers GKW, SPAX® Screws, Kundan, Unbrako, Sundaram Precision, APL, EBY Fastener , Infasco Etc.
treatment of Surface
  • Sand blasting
  • Black oxide coating
  • Heat-disposing
  • Hot-dip galvanizing
  • Polish
  • Passivation
  • Ruspert coating screws
  • Rust preventive oil
  • Anodizing
Uses Wind tower, Railway, Automotive industry, Nuclear power, Electronic industry, Construction
Certificate provided
  • Hardness testing to ISO 6508-1
  • Tensile testing to ISO 898-1
  • Calibrated gauges and tools
  • Tri-Roll Thread Comparators
  • Nut proof load testing to ISO 898-2
  • Charpy Impact testing in accordance with ISO 148-1
  • Suitability test for calibrated preload to EN 14399-10
  • Manufacturer Test Certificate as per EN 10204 / 3.1,
  • Suitability for preloading to EN 14399-2

 

Price of M8 Hex Head Bolts
Description M8 Hex Bolt Price
Hex Flange Titanium Bolt M8 for Motorcycle US $ 1.38-1.5 / Piece
Stainless Steel M8 Hex Flange Bolt DIN6921 US $ 1000-1020 / Ton
DIN933 Brass M8 Hex Bolt US $ 0.02-0.08 / Piece
Class 8.8 Bright Zinc Plated M8 Hex Flange Washer Head Bolt with Serration US $ 0.1-5 / Piece
Galvanized M8 Hexagon Bolt and Nut Hex Head Bolt US $ 0.01-1 / Piece
Size M7 Torx M8 Motorcycle Bolt US $ 0.01-0.2 / Piece
Fasteners DIN933 M8 Full Thread Brass Hex Bolt US $ 0.06-0.1 / Piece
Fasteners DIN 933 Carbon Steel Hexgon Head Bolt/Hex Bolt M8 US $ 0.35-0.5 / Piece
M8 12.9 Grade High-Strength Carbon Steel Hex Bolt US $ 0.25-0.3 / Piece

 

M8 hex Bolts various types
Stainless Steel M8 Hex Bolt

Stainless Steel M8 Hex Bolts

M8 Hex Socket Head Bolt

M8 Hex Socket Head Bolts

M8 Hex Bolt

M8 Hex Bolts

M8 Hex Flange Bolt

M8 Hex Flange Bolts

 

M8 Hex Bolts Dimensions - DIN 933
d1d1e k s
M36.01 2 5.5
M47.66 2.8 7
M58.79 3.5 8
M611.05 4 10
M814.38 5.3 13
M1018.9 6.4 17
M1221.1 7.5 19
M1424.49 8.8 22
M1626.75 10 24
M1830.14 11.5 27
M2033.53 12.5 30
M2235.72 14 32
M2439.98 15 36
M2745.2 17 41
M3050.85 18.7 46
M3355.37 21 50
M3660.79 22.5 55
M4271.3 26 65
M4882.6 30 75

 

M8 Black Hex Bolts Dimensions - ISO 4017
d1d1e k s
M36.01 2 5.5
M47.66 2.8 7
M58.79 3.5 8
M611.05 4 10
M814.38 5.3 13
M1018.9 6.4 16
M1221.1 7.5 18
M1424.49 8.8 21
M1626.75 10 24
M1830.14 11.5 27
M2033.53 12.5 30
M2235.72 14 34
39.98 15 36
M2745.2 17 41
M3050.85 18.7 46
M3355.37 21 50
M3660.79 22.5 55
M4271.3 26 65
M4882.6 30 75

 

Dimensions of DIN 931 Hex Bolts
D1D1 B TO 200 B TO 125 B OVER 200 E K S
M4 - 14 - 7.66 2.8 7
M5 - 16 - 8.79 3.5 8
M6 24 18 - 11.05 4 10
M8 28 22 - 14.38 5.3 13
M10 32 26 45 18.9 6.4 17
M12 36 30 49 21.1 7.5 19
M14 40 34 53 24.49 8.8 22
M16 44 38 57 26.75 10 24
M18 48 42 61 30.14 11.5 27
M20 52 46 65 33.53 12.5 30
M22 56 50 69 35.72 14 32
M24 60 54 73 39.98 15 36
M27 66 60 79 45.2 17 41
M30 72 66 85 50.85 18.7 46
M33 78 72 91 55.37 21 50
M36 84 78 97 60.79 22.5 55
M42 96 90 109 71.3 26 65
M45 102 96 115 76.95 28 70
M48 108 102 121 82.6 30 75

 

ISO 4014 Hex Bolts Dimensions
D1D1 B TO 200 B TO 125 B OVER 200 E K S
M4 - 14 - 7.66 2.8 7
M5 - 16 - 8.79 3.5 8
M6 24 18 - 11.05 4 10
M8 28 22 - 14.38 5.3 13
M10 32 26 45 18.9 6.4 16
M12 36 30 49 21.1 7.5 18
M14 40 34 53 24.49 8.8 21
M16 44 38 57 26.75 10 24
M18 48 42 61 30.14 11.5 27
M20 52 46 65 33.53 12.5 30
M22 56 50 69 35.72 14 34
M24 60 54 73 39.98 15 36
M27 66 60 79 45.2 17 41
M30 72 66 85 50.85 18.7 46
M33 78 72 91 55.37 21 50
M36 84 78 97 60.79 22.5 55
M42 96 90 109 71.3 26 65
M45 102 96 115 76.95 28 70
M48 108 102 121 82.6 30 75

 

M8 Hex Socket Bolts Metric Thread Pitch
Metric Fine Metric Coarse Metric Extra Fine
M1.04-0.03
M2-0.04
M2.05-0.045
M3-0.05
M3.05-0.06
M4-0.07
M5-0.08
M6-1.00
M7-1.00
M8-1.00 M8-1.025
M10-1.025 M10-1.05 M10-1.00
M12-1.05 M12-1.075 M12-1.025
M14-1.05 M14-2.00
M16-1.05 M16-2.00
M18-1.05 M18-2.05
M20-1.05 M20-2.05
M22-2.05
M24-2.00 M24-3.00
M30-3.05
M36-4.00

 

Hole Sizes for M8 Hex Head Bolts
Size Clearance Hole mm Tapping Drill (fine pitch) Tapping Drill (std Pitch) Thread Pitch (std) Thread Pitch (fine)
M5 5.5 4.2 mm 0.8
M6 6.5 5.25 mm 5.0 mm 1.0 0.75
M8 9 7 mm 6.75 mm 1.25 1.0
M10 11 9.0 or 8.75 mm 8.5 mm 1.5 1.0 or 1.25
M12 14 10.5 mm 10.25 mm 1.75 1.5
M16 18 16.5 mm 14 mm 2.0 1.5
M20 22 20.5 mm 17.5 mm 2.5 1.5
M24 26 22 mm 21 mm 3.0 2.0
M30 32 28 mm 26.5 mm 3.5 2.0

 

ISO 4018 Hex Bolts Dimensions
D1 E S K
M6 10.89 10 4
M8 14.2 13 5.3
M10 18.72 16 6.4
M12 20.88 18 7.5
M16 26.17 24 10
M20 32.95 30 12.5

 

Standard Spanner and Allen Key Sizes of M8 Hex Flange Bolts
Spanner Size Allen Key
8 mm M5 4 mm
10 mm M6 5 mm
13 mm M8 6 mm
17 mm M10 8 mm
19 mm M12 10 mm
24 mm M16 14 mm
30 mm M20 17 mm
36 mm M24 19 mm
46 mm M30

 

Dimensions chart of Heavy Hex Structural Bolts
Stainless Steel Bolts Size Runout of
Bearing Surface
FIM		 B A D C F
Thread Length		 E
Radius of Fillet		 G
Transitional
Thread Length
max min min max min max
1/2" 0.016 7/8 0.515 0.482 5/16 0.969 1.00 0.031 0.009 0.19
5/8" 0.019 1-1/16 0.642 0.605 25/64 1.175 1.25 0.062 0.021 0.22
3/4" 0.022 1-1/4 0.768 0.729 15/32 1.383 1.38 0.062 0.021 0.25
7/8" 0.025 1-7/16 0.895 0.852 35/64 1.589 1.50 0.062 0.031 0.28
1" 0.028 1-5/8 1.022 0.976 39/64 1.796 1.75 0.093 0.062 0.31
1-1/8" 0.032 1-13/16 1.149 1.098 11/16 2.002 2.00 0.093 0.062 0.34
1-1/4" 0.035 2 1.277 1.223 25/32 2.209 2.00 0.093 0.062 0.38
1-3/8" 0.038 2-3/16 1.404 1.345 27/32 2.416 2.25 0.093 0.062 0.44
1-1/2" 0.041 2-3/8 1.531 1.470 15/16 2.622 2.25 0.093 0.062 0.44


DIN 558 Hex Head Bolts Dimensions
D1 E S K
M6 10.89 10 4
M8 14.2 13 5.3
M10 18.72 17 6.4
M12 20.88 19 7.5
M16 26.17 24 10
M20 32.95 30 12.5

 

M8 Hex Head Bolts Torque Chart
Stainless Steel Torque Specifications
Threads
Per Inch
Bolts Size
Inches or #
Standard Dry Torque in Inch-Pounds
316
Stainless Steel
48 #3 4.0
56 4.6
24 #10 23.8
32 33.1
32 #6 10.1
40 12.7
40 #5 8.1
44 9.8
Threads
Per Inch
Bolts Size
Inches or #
in Inch-Pounds Standard Dry Torque
316
Stainless Steel
304
Stainless Steel
20 1/4 78.8 75.2
28 99.0 94.0
18 5/16 138 132
24 147 142
16 3/8 247 236
24 271 259
14 7/16 393 376
20 418 400
13 1/2 542 517
20 565 541
Threads
Per Inch
Bolts Size
Inches or #
Standard Dry Torque in Inch-Pounds
316
Stainless Steel
12 9/16 713
18 787
11 5/8 1160
18 1301
10 3/4 1582
16 1558
9 7/8 2430
14 2420
8 1 3595
14 3250
Threads
Per Inch
Bolts Size
Inches or #
Standard Dry Torque in Foot-Pounds
316
Stainless Steel
7 1 1/8 432
12 408
7 1 1/4 546
12 504
6 1 1/2 930
12 732

 

Weight Chart Of M8 Hex Socket Head Bolts
Dia M16 M12 M20 M24 M22 M30 M27 M36
Length
30 49.1
35 53.6
40 105 58.0
45 113 62.1 188
50 121 66.6 200 257
55 129 71.0 212 272
60 137 75.4 225 362 286
65 145 79.9 237 380 301
70 153 84.3 249 398 316 532
75 160 88.8 262 415 331 701 554
80 168 93.2 274 433 346 728 576
85 176 97.6 286 451 361 756 599 1184
90 184 102 298 467 375 784 621 1224
95 192 107 310 485 390 812 644 1264
100 199 322 503 405 838 665 1304
105 207 335 520 420 865 688 1336
110 215 347 538 435 893 710 1376
115 223 359 556 450 921 732 1415
120 231 372 574 465 949 755 1455
125 239 384 591 479 976 777 1495
130 247 396 609 494 1004 800 1535
135 409 627 509 1032 822 1575
140 421 645 524 1059 845 1615
145 433 662 539 1087 867 1655
150 446 680 554 1115 890 1695
155 458 698 569 1143 912 1735
160 716 584 1170 935 1775
165 733 599 1198 957 1815
170 751 1226 979 1855
175 769 1254 1002 1895
180 787 1281 1024 1935
185 804 1309 1047 1974
190 822 1337 1069 2014
195 840 1365 1092 2054
200 1392 1114 2094

 

M8 Hex Bolts Material
Material
Grades
ASTM Standards
Alloy Steel
B 7/ B 7M, B 6, 2, B 16, 2H, 2HM, B 7, GR 6, B 7M
ASTM A 194/193 / ASME SA 194/193 GR

Nickel Alloy

UNS 8020 (ALLOY 20 / 20 CB 3), UNS 4400 (MONEL 400), UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 8825 (INCONEL 825), UNS 10276 (HASTELLOY C 276), UNS 6625 (INCONEL 625)
ASTM / ASME SB 164 /160 / 166 /425 / 574 / 446 / 472
Stainless Steel
B 8C (SS 347), B 8 (304), B 8 T (SS 321), B 8M (SS 316), A 4, A 2
ASTM A 194/193 / ASME SA 194/193
Duplex Steel
LENGTH: UPTO 5 METERS, size Range: M10 - M100
UNS NO. S32205, S31803
High-Temp Alloys
 19-9 DL, Discaloy, A286, 16-25-6, Nimonic 80, Titanium, Haynes 25, Mulitmet, Unitemp 252, Greek Ascalloy, Rene 41, Udimet 500, Inco 901, Inco 700, 235, Hastelloy X, RA 330, Waspaloy
Finish:
 Zinc Plating, Black Oxide, Hot Dip Galvanized
Trademarks:
 Armco, Carpenter, DuPont, Cabot, INCO
Nonmetallic Materials: 
 Kel-F, Acrylic, Lexan, Poly Vinyl Chloride, Polypropylene, Zytel 31, 105, 101, Teflon
Aluminum Alloys:
 5052, 2024, 3003, 2011, 6061, 2014, 6053, 7075, 2017, 1100
Copper Base Alloys
 Copper, Brasses: Free-cut, Yellow, Naval, Red, Bronze: Phosphor, Commercial, Aluminum, Silicon A & B, Manganese, Silicon-Aluminum, Munitz Metal, Ampco Alloys, Cupro-Nicles

 

Popular Head Style of M8 Hex Head Bolts

Popular Head Style of M8 Hex Head Bolt

 

do you know that Simplex Steel is one of the favourite supplier of M8 Hex head Bolts in below countries
Dammam -KSA, Indonesia, Philippines, Belgium High Quality Hex Flange Bolt DIN M8
Europe, France, Thailand, Qatar Hexagon Hex Head Lightning ThunderBolt Concrete Bolt Size M8 X 130mm
Thailand, Germany, Malaysia, Czechia Grade 8.8 M8 Carbon Steel Black Zinc Plated DIN6921 Hex Flange Bolt
Bangladesh, USA, Finland, Malaysia Carbon Steel M8 Surface Dacromet Hex Nut Bolt with Washer
Kuwait, Saudi Arabia (KSA), Brazil, South Africa M8 Steel Hex Flange Bolt
South Africa, Singapore, Bahrain Stainless Steel 304 M8 Hex Bolt and Screws Combination Hexagon M8 DIN934 Nuts with M8 Washers
Philippines, Nigeria, UK, Australia M8*110 Carbon Steel Hex Socket Head Screw Bolt for Aluminium Profile
Malaysia, Hong Kong, Oman, UAE M8 Hex Flange Hex Bolt, Black Oxide Flange Bolt
Italy, Iran, Singapore, Chile Grade 8.8 M8 Carbon Steel Zinc Plated DIN6921 Hex Flange Bolt
Norway, Turkey, Malaysia, United Arab Emirates (UAE) Hex Flange Bolt for Motorcycle Custom M8
Malaysia, Russia, Netherlands, Dubai M8 Stainless Steel Hex Anchor Bolt
Egypt, Mexico, UK, Spain M8 Carbon Steel Heavy Hex Bolt
Europe, UAE, Malaysia, United Kingdom -UK M8 HDG Black Hex Head DIN933 Hex Bolt for Steel Structure
Poland, Canada, Ellington -United States, UK Stainless Steel Carriage Bolt M8 Lag Bolt 10mm Hex Bolt 4.8
Canada, Philippines, Singapore, Malaysia M8 DIN6921 Hex Flange Bolt
Malaysia, Japan, Europe, Romania Carbon Steel M8 Surface Dacromet Hex Nut Bolt with Washer
Colombia, Sweden, China, Malaysia High Strength Custom M8 Hex Gr5 Ti-6al-4V Bolt Screws Fasteners Titanium Flange Bolt
Los Alamos -Mexico, Taiwan, Philippines, Malaysia Hex Head Bolt M8*20mm
NY 12203 (USA), South Korea, Malaysia, Singaporr Plain M8*25 Stainless Steel Hex Head Bolt

 

M8 Hex Flange Bolts Coating's

M8 Hex Bolts Coating
Hot Dipped Galvanizing
Passivation
Oxidized
Epoxy Coating
Zinc Plating
Electro Polished
Teflon Coating
Chrome Plating
Mirror Buffed

 

lengths of m8 hex head Bolts
125mm and Shorter Bolts Diameter Longer Than 125mm
18 M6 24
20 M7 26
22 M8 28
26 M10 32

 

Thickness m8 hex Bolts head
Pitch Diameter (d) Head Depth (k)
0.8mm M5 3.5mm
1.0mm M6 4mm
1.0mm M7 4.8mm
1.25mm M8 5.3mm

 

m8 hex socket head Bolts dimension
Size Head Diameter Diameter Hexagon Socket Size Head Height Key Engagement
M3-0.5 5.50 3.00 2.50 3.00 1.50
M4-0.7 7.00 4.00 3.00 4.00 2.00
M5-0.8 8.50 5.00 4.0 5.00 2.50
M6-1.0 10.00 6.00 5.00 6.00 3.00
M8-1.25 13.00 8.00 6.00 8.00 4.00
M10-1.50 16.00 10.00 8.00 10.00 5.00

 

m8 flanged hex head Bolts
Diameter M10 M8 M6 M16 M12
b min 26 22 18 38 30
d2 min 22.3 18 14.2 35 26.6
k max 9.2 8.8 6.6 14.4 11.5
s max 15 13 10 21 16
Length (mm) H059 — 6921-10.9 Yellow Zinc Plated
Pkg.
12 100
16 100 100
20 100 100 100
25 100 100 100 100
30 100 100 100 50 100
35 100 100 100 50 100
40 100 100 100 50 100
45 100 100 100 50 100
50 100 100 100 50 100
60 100 100 50 100
70 100 50 100
80 100 25 50

 

download
Fasteners Types We Manufacture
Other Products
Blog