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  • 1/B, Ground Floor, Siddhi Apartment,
    10th Khetwadi Back Road, Mumbai 400 004

DIN 478 Square Head Bolts With Collar

DIN 478 Square Head Bolts With Collar
  • Sizes in Stock: M3 to M30
  • Material : SS, CS, AS
  • Head Design : Hammered and Pyramid
  • Lengths : 3/4" - 12"
  • Uses: Heavy Duty Applications
  • Class : A2 and A4, 8.8, 10.9, 12.9
  • Finish : Zinc Plated Self, Black, HDG
  • Thread Type: Coarse Thread / Partial Thread
  • Sizes Can Be Manufacture: Up to M50
  • Dimension : ASME B18.2.1
  • Neck Type : Square
  • Test : Hardness Testing
  • Certificate : Third Party Inspection
  • Production Capacity : 50 Tons/Month

Dalloyed Produces DIN 478 Square Head Machine Bolts in Forging


Table of Content


Shipping Time and Location

Asmidal

Asmidal

  • M6, Square Bolts, ASTM A307
  • Annaba, Algeria
Azov Lubricants and Oils

Azov Lubricants and Oils

  • M12, Square Bolts, ASTM A4
  • Berdiansk, Ukraine

DIN 478 Specification

Size In Ready Stock

Size In Ready Stock

  • DIN 478 Square Head Bolts Sizes = M3 to M30
Head Type

Head Type

  • Pyramid and Hammered
Neck Type

Neck Type

  • Square
Threads

Threads

  • Partial Thread and Coarse Thread
Manufacturing Types

Manufacturing Types

  • CNC Machine
  • Cold forging
  • Hot forging
Tensile Class

Tensile Class

  • Class 8.8
  • Class 10.9
  • Class 12.9
Testing & Inspection

Testing & Inspection

  • Proof Load Testing
  • PMI Test
  • Corrosion Test
Uses

Uses

  • Heavy Duty Applications
  • Construction
  • Woodworking
Available Packaging

Available Packaging

  • Carton Box
  • Wooden Cases
  • Custom
Raw Material Origin

Raw Material Origin

  • European
  • German
  • Janpanese


Manufacturer of DIN 478 Square Head Coach Bolts with EN 10204 3.1 MTC in India


Common Uses For DIN 478 Square Head Machine Bolts

Common Uses For DIN 478 Square Head Machine Bolts

Strength Class Of DIN 478 Square Bolts

Strength Class Made From Characteristics Tensile Strength
Class 50 A2-70 Cold worked 70,000 PSI
Class 70 A2-70, A4-70 Normal strength 100,000 PSI
Class 80 A2-70, A4-70 Extreme cold worked 118,000 PSI

Square Head Bolts DIN 478 Tempering Temperature

Class Material Treatment

Class 8.8

Medium carbon steel Quenched and tempered

Class 9.8

Medium carbon steel Quenched and tempered

Class 10.9

Medium carbon and Alloy steel Quenched and tempered
Class 12.9 Alloy steel Quenched and tempered

Material And Treatment Of DIN 478 Square Head Machine Bolts

Class Tempering Temp (Min)
Class 8.8 425ºC
Class 9.8 425ºC
Class 10.9 425ºC
Class 12.9 380ºC

DIN 478 Square Head Bolts With Collar Dimensions

DIN 478 Square Head Bolts With Collar Dimensions
Thread d M5 M6 M8 M10
P 0,8 1 1,25 1,5
b (length of the thread) l<125mm 16 18 22 26
l>125mm - - - 32
c (thickness of collar) nominal 2 2 2 3
minimum 1,88 1,88 1,88 2,88
maximum 2,12 2,12 2,12 3,12
da (maximum diameter of head) maximum 5,7 6,8 9,2 11,2
dc nominal=maximum 9,5 10,5 13,5 16,5
minimum 8,92 9,8 12,8 15,8
ds ( screw shank diameter) nominal=maximum 5 6 8 10
minimum 4,82 5,82 7,78 9,78
e (circumscribed circle diameter) nominal=maximum 6,5 8 10 13
minimum 5,92 7,42 9,42 12,3
k (head height) nominal 7 8 10 13
maximum 6,82 7,82 9,82 12,78
minimum 7,18 8,18 10,18 13,22
k´ (minimum head size) minimum 3,4 4,1 5,5 6,9
r (Head radius) minimum 0,25 0,25 0,4 0,4
s (head width) nominal=maximum 5 6 8 10
minimum 4,82 5,82 7,78 9,78
x1 (thread run) maximum 2 2,5 3,2 3,8

Thread d M12 M16 M20 M24
P 1,75 2 2,5 3
length of the thread (b) l<125mm 30 38 45 54
l>125mm 36 44 52 60
thickness of collar (c) nominal 3 4 5 6
minimum 2,88 3,85 4,85 5,85
maximum 3,12 4,15 5,15 6,15
maximum diameter of head (da) maximum 13,7 17,7 22,4 26,4
dc nominal=maximum 19,5 25 31 36
minimum 18,66 24,16 30 35
screw shank diameter (ds) nominal=maximum 12 16 20 24
minimum 11,73 15,73 19,67 23,67
circumscribed circle diameter (e ) nominal=maximum 17 22 28 32
minimum 16,3 21,16 27,16 31
head height (k) nominal 15 20 25 28
maximum 14,78 19,74 24,74 27,74
minimum 15,22 20,26 25,26 28,26
minimum head size (k´ ) minimum 8,3 11,1 13,8 15,2
Head radius (r) minimum 0,6 0,6 0,8 0,9
head width (s) nominal=maximum 13 17 22 24
minimum 12,73 16,73 21,67 23,67
thread run (x1) maximum 4,3 5 6,3 7,5

DIN 478 Square Head Bolts Weights

weight kg/1000pcs

Length M8 M10 M12
10 - - -
16 10.8 - -
20 12.1 21.9 -
25 13.7 24.4 39.5
30 15.7 27.5 43
35 17.7 30.6 47.5
40 19.7 33.7 52
45 21.7 36.8 56.5
50 - 39.9 61
55 - 43 65.5
60 - 46.1 70
70 - - 79
80 - - 88
90 - - 97
100 - - -
110 - - -
120 - - -
140 - - -
160 - - -
180 - - -

Length M16 M20 M24
10 - - -
16 - - -
20 - - -
25 - - -
30 88 - -
35 95 172 240
40 102 182 255
45 110 193 270
50 118 203 285
55 126 215 300
60 134 227 315
70 150 252 350
80 176 277 385
90 192 302 420
100 208 327 455
110 224 352 490
120 240 377 525
140 272 427 595
160 - 477 665
180 - 527 735

DIN 478 Square Head Coach Bolts Chemical composition

Grade Class UNS Designation EN Designation Mo ≤ % Ni ≤ % Mn ≤ % Cr ≤ % C Si ≤ %
Stainless Steel 304 Fasteners A2-70 UNS S30400 1.4301 - 8 to10.5% 1% 17.5 to 19.5% ≤ 0.07% 1%
UNS S30403 1.4306 - 10 to 12% 2% 18 to 20% ≤0.03% 1%
UNS S30500 1.4303 - 11 to 13% 2% 17 to 19% ≤0.07% 1%
Stainless Steel 316 Fasteners A4-70 UNS S31600 1.4401 2 to 2.5% 10 to 13% 2% 16.5 to 18.5% ≤0.07% 1%
UNSS31603 1.4404 2 to 2.5% 10 to 13% 2% 16.5 to 18.5% ≤0.03% 1%

DIN 478 Square Head Jack Bolts Mechanical Properties

Group of Steel Grade Strength Class DIN 478 Square Head Bolts With Collar
Load Diameter Range Tensile Strength Tensile Strength
Austenitic A2-70 and A4-70 Class 50 500 N/mm2 <=M39 70,000 PSI 500 N/mm2
Class 70 700 N/mm2 <=M20 100,000 PSI 700 N/mm2
Class 80 800 N/mm2 <=M20 118,000 PSI 800 N/mm2

Types Of DIN 478 Square Head Bolts


DIN 478 Square Head Machine Bolts

DIN 478 Square Head Machine Bolts

DIN 478 Square Head Coach Bolts

DIN 478 Square Head Coach Bolts

DIN 478 Square Head Jack Bolts

DIN 478 Square Head Jack Bolts