Hexagon Head Bolts, Screws
Socket Head Cap Screws
Socket Button Head Cap Screws
Socket Countersunk Head Screw
Socket Set Screws
Hex Nut
Special Fasteners
 
 
Hexagon Head Bolts, Screws Metric Series - Dimensions
Note:
  1. The bolts and screws will generally conforms to IS : 1364, ISO 4071 and DIN 931/933.
  2. Threads will confirm to class 6g of IS : 4218, Coarse Series.
  3. Material : Mita High Grade Carbon/Alloy Steel.
  4. Heat Treatment : Propety Class : 10.9 or 8.8 of IS : 1367.
  5. Thread Length LT
 a. Lt1 for L < 125
 b. Lt2 for L < 125 to 200
 c. Lt3 for L > 200
  6. Screw Lengths equal to or shorter than those listed in row 'LFT' will be threaded to head.
  7. Sizes in brackets are non-preferred standards.
  8. All dimensions are in millimeters.
 
Thread
Size
Pitch W Max C Min. B
Max.
H
Nom.
R
Min.
Q Min. Length of Thread Length Range L
Lt1 Lt2. Lt3. LFT
M4 0.7 7.0 7.66 4.0 2.8 0.2 5.9 14 -- -- 20 10-40
M5 0.8 8.0 8.79 5.0 3.5 0.2 6.9 16 -- -- 20 10-50
M6 1.0 10.0 11.05 6.0 4.0 0.25 8.9 18 -- -- 25 10-50
M8 1.25 13.0 14.38 8.0 5.3 0.4 11.6 22 28 -- 30 12-90
M10 1.5 17.016.0 18.90 17.80 10.0 6.4 0.4 15.6 26 32 45 35 16-90
M12 1.75 19.0 18.0 21.10 20.3 12.0 7.5 0.6 17.4 30 36 49 40 20-280
(M14) 2.0 22.0 21.0 24.49 23.45 14.0 8.8 0.6 20.5 34 40 53 45 25-200
M16 2.0 24.0 26.75 16.0 10.0 0.6 22.5 38 44 57 50 25-280
(M18) 2.5 27.0 30.14 18.0 11.5 0.6 25.3 42 48 61 60 40-200
M20 2.5 30.0 33.53 20.0 12.5 0.8 28.2 46 52 65 60 40-280
(M22) 2.5 32.0 34.0 35.72 37.72 22.0 14.0 0.8 30.0 50 56 69 65 50-280
M24 3.0 36.0 39.98 24.0 15.0 0.8 33.6 54 60 73 75 50-280
(M27) 3.0 41.0 45.20 27.0 17.0 1.0 38.0 60 66 79 85 70-300
M30 3.5 46.0 50.85 30.0 18.7 1.0 42.7 66 72 85 85 75-300
(M33) 3.5 50.0 55.55 33.0 21.0 1.0 46.6 72 78 91 95 75-300
M36 4.0 55.0 60.79 36.0 22.5 1.0 51.1 78 84 97 100 80-300
(M39) 4.0 60.0 66.44 39.0 25.0 1.0 55.9 84 90 107 110 90-300
M42 4.5 65.0 72.02 42.0 26.0 1.2 61.6 90 96 109 120 90-300
 
Physical Properties
Property Class Diameter 8.8
M 16       M16
10.9
all diameters
Unit N/mm2 kgt/mm2 N/mm2 kgt/mm2 N/mm2 kgt/mm2
Tensile Strength, Min. 800 81.5 830 84.6 1040 106
Yield Strength, 0.2% offset Min. 640 65.2 660 67.2 940 95.8
Proof Lead Stress. 580 59.1 600 61.2 830 84.6
Shear Strength, Min. 480 48.9 498 50.8 624 63.6
Hardness Brinell HB 219-285 242-319 295-362
Rockwell HRC 20-30 23-34 31-39
Elongation % on GL =
A = Cross Sectional Area
12% Min. 9% Min.
 
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