High Tensile Hexagonal Head fasteners are available in 8.8 and 10.9 grades for Bolts/Screws and grades 8 and 10 for nuts.
These fasteners are available in Metric, BSW, BSF, UNC and UNF threads.
Finishes: Black Phosphated, Zinc plated, Yellow Zinc Plated, Cadmium Plated, Nickel Plated, Chromium Plated and Hot Dip Galvanized.
Size Range
High Tensile Hex Bolts/Screws
High Tensile Nuts
High Tensile Washers
High Tensile Friction Grip Bolts (Structural Bolts)
Track Shoe Bolts with Square Nuts
Prevailing Torque Type Nuts with Nylon insert (Nyloc Nuts)
EN-8 Threaded Rod
Disk-Lock Washers
DIA | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 |
Pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | ||||||||
Grade A upto length | 40 | 50 | 60 | 80 | 100 | 120 | 140 | 150 | Grade A not applicable to these dia’s | ||||||||||||
Head Across Flat (S) Nom = Max
Min Grade A
Grade B | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | Grade A not applicable to these dia’s | |||||||||
6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | |
Head Height (K) Nom Tol + or – Grade A
Grade B | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
0.125 | 0.15 | 0.18 | 0.215 | Grade A not applicable to these dia’s | |||||||||||||||||
0.2 | 0.24 | 0.29 | 0.35 | 0.42 | 0.5 | ||||||||||||||||
Across corners e Min Grade A
Grade B | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | Grade A not applicable to these dia’s | ||||||||
7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | |
Thread Length (b) For lengths < or = 125mm
For lengths > 125mm <= 200mm
For lengths > 200mm | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | 60 | 66 | Not specified as full thread recommended | ||||||
20 | 22 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 66 | 72 | 78 | 84 | 90 | 96 | 102 | 108 | 116 | |
33 | 35 | 37 | 41 | 45 | 49 | 53 | 57 | 61 | 65 | 69 | 73 | 79 | 85 | 91 | 97 | 103 | 109 | 115 | 121 | 129 | |
Major Dia at thread (min) | 3.838 | 4.826 | 5.794 | 7.76 | 9.732 | 11.701 | 13.682 | 15.682 | 17.623 | 19.623 | 21.623 | 23.577 | 26.577 | 29.522 | 32.522 | 35.465 | 38.465 | 41.437 | 44.437 | 47.399 | 51.399 |
Major Dia at thread (max) | 3.978 | 4.976 | 5.974 | 7.972 | 9.968 | 11.966 | 13.962 | 15.962 | 17.958 | 19.958 | 21.958 | 23.952 | 26.952 | 29.947 | 32.947 | 35.94 | 38.94 | 41.937 | 44.937 | 47.929 | 51.929 |
All dimensions in mm
| M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 |
Pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 |
Grade A upto length | 40 | 50 | 60 | 80 | 100 | 120 | 140 | 150 | Grade A not applicable to these dia’s | ||||||||||||
Head Across Flat (S) Max Min(Grade A)
Min (Grade B) | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | Grade A not applicable to these dia’s | |||||||||
6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | |
Head Thickness (K) Tol + or – Grade A Grade B | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
0.125 | 0.15 | 0.18 | 0.215 | Grade A not applicable to these dia’s | |||||||||||||||||
0.2 | 0.24 | 0.29 | 0.35 | 0.42 | 0.5 | ||||||||||||||||
Across corners E Min Grade A Grade B | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | Grade A not applicable to these dia’s | ||||||||
7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | |
Major Dia at thread (min) | 3.838 | 4.826 | 5.794 | 7.76 | 9.732 | 11.701 | 13.682 | 15.682 | 17.623 | 19.623 | 21.623 | 23.577 | 26.577 | 29.522 | 32.522 | 35.465 | 38.465 | 41.437 | 44.437 | 47.399 | 51.399 |
Major Dia at thread (max) | 3.978 | 4.976 | 5.974 | 7.972 | 9.968 | 11.966 | 13.962 | 15.962 | 17.958 | 19.958 | 21.958 | 23.952 | 26.952 | 29.947 | 32.947 | 35.94 | 38.94 | 41.937 | 44.937 | 47.929 | 51.929 |
All dimensions in Inches
DIA | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 | 1 3/4 | 2 |
BSW Pitch (TPI) | 20 | 18 | 16 | 14 | 12 | 12 | 11 | 10 | 9 | 8 | 7 | 7 |
| 6 | 5 | 4.5 |
BSF PITCH (TPI) | 26 | 22 | 20 | 18 | 16 | 16 | 14 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 7 |
Head Across Flat (S) Min Max | 0.438 | 0.518 | 0.592 | 0.702 | 0.812 | 0.912 | 1.000 | 1.190 | 1.288 | 1.468 | 1.640 | 1.815 | 2.005 | 2.175 | 2.520 | 2.700 |
0.445 | 0.525 | 0.600 | 0.710 | 0.820 | 0.920 | 1.010 | 1.200 | 1.300 | 1.480 | 1.670 | 1.860 | 2.050 | 2.220 | 2.580 | 2.760 | |
Head height (K) Min Max | 0.166 | 0.208 | 0.250 | 0.292 | 0.333 | 0.365 | 0.407 | 0.480 | 0.563 | 0.636 | 0.710 | 0.790 | 0.880 | 0.960 | 1.110 | 1.270 |
0.176 | 0.218 | 0.260 | 0.302 | 0.343 | 0.375 | 0.417 | 0.500 | 0.583 | 0.666 | 0.750 | 0.830 | 0.920 | 1.000 | 1.170 | 1.330 | |
Across corners e Max | 0.51 | 0.61 | 0.69 | 0.82 | 0.95 | 1.06 | 1.17 | 1.39 | 1.50 | 1.71 | 1.93 | 2.15 | 2.37 | 2.56 | 2.98 | 3.19 |
Thread Length b Min | Twice the Dia (2D) | |||||||||||||||
Major Dia at thread BSW (min) | 0.2427 | 0.3046 | 0.3666 | 0.4285 | 0.4904 | 0.5527 | 0.6147 | 0.7390 | 0.8653 | 0.9897 | 1.1140 | 1.2388 |
| 1.4879 | 1.7369 | 1.9862 |
Major Dia at thread BSW (max) | 0.2488 | 0.3112 | 0.3736 | 0.4360 | 0.4985 | 0.5609 | 0.6233 | 0.7482 | 0.8750 | 1.000 | 1.1250 | 1.250 |
| 1.500 | 1.750 | 2.000 |
Major Dia at thread BSF (min) | 0.2432 | 0.3051 | 0.3671 | 0.4290 | 0.4910 | 0.5533 | 0.6153 | 0.7394 | 0.8658 | 0.9902 | 1.1148 | 1.2395 | 1.3640 | 1.4888 | 1.7380 | 1.9876 |
Major Dia at thread BSF (max) | 0.2489 | 0.3113 | 0.3737 | 0.4361 | 0.4985 | 0.5610 | 0.6234 | 0.7482 | 0.8750 | 1.000 | 1.1250 | 1.250 | 1.375 | 1.500 | 1.750 | 2.000 |
All dimensions in Inches
DIA | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 | 1 3/4 | 2 |
UNC Pitch (TPI) | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 4.5 |
UNF Pitch (TPI) | 28 | 24 | 24 | 24 | 20 | 20 | 18 | 16 | 14 | 12 | NOT RECOMMENDED | |||||
Head Across Flat (S) Min Max | 0.430 | 0.493 | 0.554 | 0.617 | 0.742 | 0.804 | 0.929 | 1.115 | 1.300 | 1.488 | 1.657 | 1.830 | 2.017 | 2.205 | 2.565 | 2.940 |
0.437 | 0.500 | 0.562 | 0.625 | 0.750 | 0.812 | 0.937 | 1.125 | 1.312 | 1.500 | 1.687 | 1.875 | 2.062 | 2.250 | 2.625 | 3.000 | |
Head Height (K) Min
Max | 0.153 | 0.201 | 0.233 | 0.281 | 0.313 | 0.361 | 0.393 | 0.463 | 0.543 | 0.597 | 0.678 | 0.773 | 0.838 | 0.934 | 1.074 | 1.203 |
0.163 | 0.211 | 0.243 | 0.291 | 0.323 | 0.371 | 0.403 | 0.483 | 0.563 | 0.627 | 0.718 | 0.813 | 0.878 | 0.974 | 1.134 | 1.263 | |
Across corners e (MAX) | 0.505 | 0.577 | 0.650 | 0.722 | 0.866 | 0.938 | 1.083 | 1.300 | 1.515 | 1.732 | 1.948 | 2.165 | 2.382 | 2.598 | 3.031 | 3.464 |
Thread Length b (Min) | 2D + 1/4” upto bolt length of 6” and 2D + 1/2” for bolt lengths above 6” | |||||||||||||||
Major Dia at thread ( Class 2A) Min for UNC | 0.2408 | 0.3026 | 0.3643 | 0.4258 | 0.4876 | 0.5495 | 0.6113 | 0.7353 | 0.8592 | 0.9830 | 1.1064 | 1.2314 | 1.3544 | 1.4794 | 1.7268 | 1.9751 |
Major Dia at thread (2A) Min for UNF | 0.2425 | 0.3042 | 0.3667 | 0.4281 | 0.4906 | 0.5524 | 0.6149 | 0.7391 | 0.8631 | 0.9868 | NOT RECOMMENDED | |||||
Major Dia at thread Class 2A Max for UNC | 0.2490 | 0.3113 | 0.3737 | 0.4361 | 0.4985 | 0.5609 | 0.6234 | 0.7482 | 0.8731 | 0.9980 | 1.1228 | 1.2478 | 1.3726 | 1.4976 | 1.7473 | 1.9971 |
All dimensions in mm
| M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 |
Pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 |
Grade A upto length | 40 | 50 | 60 | 80 | 100 | 120 | 140 | 150 | Grade A not applicable to these dia’s | ||||||||||||
Head Across Flat (S) Max Min(Grade A)
Min (Grade B) | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | Grade A not applicable to these dia’s | |||||||||
6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | |
Head Thickness (K) Tol + or – Grade A Grade B | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 |
0.125 | 0.15 | 0.18 | 0.215 | Grade A not applicable to these dia’s | |||||||||||||||||
0.2 | 0.24 | 0.29 | 0.35 | 0.42 | 0.5 | ||||||||||||||||
Across corners E Min Grade A Grade B | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 | Grade A not applicable to these dia’s | ||||||||
7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 | |
Major Dia at thread (min) | 3.838 | 4.826 | 5.794 | 7.76 | 9.732 | 11.701 | 13.682 | 15.682 | 17.623 | 19.623 | 21.623 | 23.577 | 26.577 | 29.522 | 32.522 | 35.465 | 38.465 | 41.437 | 44.437 | 47.399 | 51.399 |
Major Dia at thread (max) | 3.978 | 4.976 | 5.974 | 7.972 | 9.968 | 11.966 | 13.962 | 15.962 | 17.958 | 19.958 | 21.958 | 23.952 | 26.952 | 29.947 | 32.947 | 35.94 | 38.94 | 41.937 | 44.937 | 47.929 | 51.929 |
All dimensions in mm
DIA | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 |
Pitch | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 |
Across Flat (S) Max Min | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.16 | 29.16 | 33 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | |
Thickness (M) Max Min | 3.2 | 4.7 | 5.2 | 6.8 | 8.4 | 10.8 | 12.8 | 14.8 | 15.8 | 18 | 19.4 | 21.5 | 23.8 | 25.6 | 28.7 | 31 | 33.4 | 34 | 36 | 38 | 42 |
2.9 | 4.4 | 4.9 | 6.44 | 8.04 | 10.37 | 12.1 | 14.1 | 15.1 | 16.9 | 18.1 | 20.2 | 22.5 | 24.3 | 27.4 | 29.4 | 31.8 | 32.4 | 34.4 | 36.4 | 40.4 | |
Across corners (E) Min | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.35 | 26.75 | 29.56 | 32.95 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 71.3 | 76.95 | 82.6 | 88.25 |
Minor Dia at thread (min) | 3.242 | 4.134 | 4.917 | 6.647 | 8.376 | 10.106 | 11.835 | 13.835 | 15.294 | 17.294 | 19.294 | 20.752 | 23.752 | 26.211 | 29.211 | 31.67 | 34.67 | 37.129 | 40.129 | 42.587 | 46.587 |
Minor Dia at thread (max) | 3.422 | 4.334 | 5.153 | 6.912 | 8.676 | 10.441 | 12.210 | 14.210 | 15.744 | 17.774 | 19.774 | 21.252 | 24.252 | 26.771 | 29.771 | 32.27 | 35.27 | 37.799 | 40.799 | 43.297 | 47.297 |
All dimensions in inches
DIA | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 | 1 3/4 | 2 |
BSW Pitch (TPI) | 20 | 18 | 16 | 14 | 12 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | – | 6 | 5 | 4.5 |
BSF PITCH (TPI) | 26 | 22 | 20 | 18 | 16 | 16 | 14 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 7 |
WIDTH Across Flat (S) Min Max | 0.438 | 0.518 | 0.592 | 0.702 | 0.812 | 0.912 | 1.000 | 1.190 | 1.288 | 1.468 | 1.640 | 1.815 | 2.005 | 2.175 | 2.520 | 2.700 |
0.445 | 0.525 | 0.600 | 0.710 | 0.820 | 0.920 | 1.010 | 1.200 | 1.300 | 1.480 | 1.670 | 1.860 | 2.050 | 2.220 | 2.580 | 2.760 | |
Thickness (M) Min Max | 0.190 | 0.240 | 0.302 | 0.365 | 0.427 | 0.490 | 0.552 | 0.677 | 0.740 | 0.865 | 0.990 | 1.105 | 1.230 | 1.355 | 1.605 | 1.730 |
0.200 | 0.250 | 0.312 | 0.375 | 0.437 | 0.500 | 0.562 | 0.687 | 0.750 | 0.875 | 1.000 | 1.125 | 1.250 | 1.375 | 1.625 | 1.750 | |
Across corners (Max inches) | 0.51 | 0.61 | 0.69 | 0.82 | 0.95 | 1.06 | 1.17 | 1.39 | 1.50 | 1.71 | 1.93 | 2.15 | 2.37 | 2.56 | 2.98 | 3.19 |
Minor Dia at thread BSW (min) | 0.1860 | 0.2413 | 0.2950 | 0.3461 | 0.3932 | 0.4557 | 0.5086 | 0.6220 | 0.7328 | 0.8400 | 0.9420 | 1.0670 | – | 1.2866 | 1.4938 | 1.7154 |
Minor Dia at thread BSW (max) | 0.2030 | 0.2594 | 0.3145 | 0.3674 | 0.4169 | 0.4794 | 0.5338 | 0.6490 | 0.7620 | 0.8720 | 0.9776 | 1.1026 | – | 1.3269 | 1.5408 | 1.7668 |
Minor Dia at thread BSF (min) | 0.2008 | 0.2543 | 0.3110 | 0.3663 | 0.4200 | 0.4825 | 0.5336 | 0.6432 | 0.7586 | 0.8720 | 0.9828 | 1.1078 | 1.2150 | 1.3400 | 1.5670 | 1.8170 |
Minor Dia at thread BSF (max) | 0.2125 | 0.2684 | 0.3280 | 0.3844 | 0.4395 | 0.5020 | 0.5549 | 0.6669 | 0.7838 | 0.8990 | 1.0120 | 1.1370 | 1.2470 | 1.3720 | 1.6026 | 1.8526 |
All dimensions in inches
DIA | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 | 1 3/4 | 2 |
UNC Pitch (TPI) | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 4.5 |
UNF Pitch (TPI) | 28 | 24 | 24 | 24 | 20 | 20 | 18 | 16 | 14 | 12 | NOT RECOMMENDED | |||||
Width Across Flat (S) Min Max | 0.430 | 0.493 | 0.554 | 0.617 | 0.742 | 0.804 | 0.929 | 1.115 | 1.300 | 1.488 | 1.657 | 1.830 | 2.017 | 2.205 | 2.565 | 2.940 |
0.437 | 0.500 | 0.562 | 0.625 | 0.750 | 0.812 | 0.937 | 1.125 | 1.312 | 1.500 | 1.687 | 1.875 | 2.062 | 2.250 | 2.625 | 3.000 | |
Thickness (M) Min Max | 0.214 | 0.261 | 0.323 | 0.370 | 0.432 | 0.479 | 0.542 | 0.631 | 0.740 | 0.844 | 0.949 | 1.037 | 1.147 | 1.251 | 1.470 | 1.684 |
0.224 | 0.271 | 0.333 | 0.380 | 0.442 | 0.489 | 0.552 | 0.651 | 0.760 | 0.874 | 0.989 | 1.087 | 1.197 | 1.311 | 1.530 | 1.754 | |
Across corners (E) Max | 0.505 | 0.577 | 0.650 | 0.722 | 0.866 | 0.938 | 1.083 | 1.300 | 1.515 | 1.732 | 1.948 | 2.165 | 2.382 | 2.598 | 3.031 | 3.464 |
Minor Dia at thread (min) UNC (2B) | 0.1960 | 0.2520 | 0.3070 | 0.3600 | 0.4170 | 0.4720 | 0.5270 | 0.6420 | 0.7550 | 0.8650 | 0.9700 | 1.0950 | 1.1950 | 1.3200 | 1.5340 | 1.7590 |
Minor Dia at thread (max) UNC (2B) | 0.2070 | 0.2650 | 0.3210 | 0.3760 | 0.4340 | 0.4900 | 0.5460 | 0.6630 | 0.7780 | 0.8900 | 0.9980 | 1.1230 | 1.2250 | 1.3500 | 1.5680 | 1.7950 |
Minor Dia at thread (min) UNF (2B) | 0.2110 | 0.2670 | 0.3300 | 0.3830 | 0.4460 | 0.5020 | 0.5650 | 0.6820 | 0.7980 | 0.9100 | NOT RECOMMENDED | |||||
Minor Dia at thread (max) UNF (2B) | 0.2200 | 0.2770 | 0.3400 | 0.3950 | 0.4570 | 0.5150 | 0.5780 |
DIA | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
HARDNESS FOR PL. WASHER | 35 TO 45 HRC | ||||||
Hardness for Hot Dip Galvd washer | 26 HRC | ||||||
Outer Dia (Max) d2 | 34 | 42 | 44 | 50 | 56 | 60 | 72 |
Inner Dia (Min) d1 | 18 | 22 | 24 | 26 | 30 | 33 | 39 |
Thickness (S) | 3.1 TO 4.6 | ||||||
Tolerance for OD Minus(-) | 1.6 | 1.9 | |||||
Tolerance for ID Plus(+) | 0.43 | 0.52 | 0.62 |
All dimensions in mm
DIA | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
Weight in Kgs for 100 nos | 0.703 | 1.46 | 1.96 | 2.43 | 3.06 | 5.02 | 6.32 | 11.50 |
Outer Dia (Max) d2 | 24 | 30 | 37 | 39 | 44 | 50 | 56 | 66 |
Inner Dia (Min) d1 | 13 | 17 | 21 | 23 | 25 | 28 | 31 | 37 |
Thickness (S) | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 |
Tolerance for OD Minus(-) | 0.52 | 0.62 | 1 | 1.20 | ||||
Tolerance for ID Plus(+) | 0.27 | 0.33 | 0.52 | 0.62 | ||||
Tolerance for thickness + or – | 0.30 | 0.60 |
All dimensions in mm
DIA | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
Pitch | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
Thread Length for Bolt length <= 100 | 31 | 36 | 38 | 41 | 44 | 49 | 56 |
Thread Length for Bolt length > 100 | 38 | 43 | 45 | 48 | 51 | 56 | 63 |
Head Across Flat (B) Min | 26.16 | 33 | 35 | 40 | 45 | 49 | 58.8 |
Head Across Flat (B) Max | 27 | 34 | 36 | 41 | 46 | 50 | 60 |
Head Height (H) Nom Tolerance + or – | 10 | 12.5 | 14 | 15 | 17 | 18.7 | 22.5 |
0.75 | 0.90 | 1.05 | |||||
Across corners C min | 29.56 | 37.29 | 39.55 | 45.20 | 50.85 | 55.37 | 66.44 |
Major Dia at thread (min) | 15.682 | 19.623 | 21.623 | 23.577 | 26.577 | 29.522 | 35.465 |
Major Dia at thread (max) | 15.962 | 19.958 | 21.958 | 23.952 | 26.952 | 29.947 | 35.94 |
All dimensions in mm
DIA | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
Pitch | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
Head Across Flat (B) Min | 26.16 | 33 | 35 | 40 | 45 | 49 | 58.8 |
Head Across Flat (B) Max | 27 | 34 | 36 | 41 | 46 | 50 | 60 |
Height (H) Min Max | 16.4 | 19.4 | 22.3 | 22.9 | 26.3 | 29.1 | 35 |
17.1 | 20.7 | 23.6 | 24.2 | 27.6 | 30.7 | 36.6 | |
Across corners C min | 29.56 | 37.29 | 39.55 | 45.20 | 50.85 | 55.37 | 66.44 |
Minor Dia at thread (min) | 14.235 | 17.694 | 19.694 | 21.202 | 24.252 | 26.761 | 32.270 |
Minor Dia at thread (max) | 14.610 | 18.144 | 20.144 | 21.702 | 24.752 | 27.321 | 32.870 |
All dimensions in mm
DIA |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M16 |
M20 |
M24 |
M30 |
M36 |
Pitch |
0.5 |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
3 |
3.5 |
4 |
Across Flat (S) Tolerance Minus (-) |
5.5 |
7 |
8 |
10 |
13 |
16 |
18 |
24 |
30 |
36 |
46 |
55 |
0.18 |
0.22 |
0.27 |
0.33 |
0.84 |
1 |
1.2 |
||||||
Height (H) Max Min |
4.5 |
6 |
6.8 |
8 |
9.5 |
11.9 |
14.9 |
19.1 |
22.8 |
27.1 |
32.6 |
38.9 |
4.02 |
5.52 |
6.22 |
7.42 |
8.92 |
11.2 |
14.2 |
17.8 |
20.7 |
25 |
30.1 |
36.4 |
|
Across corners e min |
6.01 |
7.66 |
8.79 |
11.05 |
14.38 |
17.77 |
20.03 |
26.75 |
32.95 |
39.55 |
50.85 |
60.79 |
Minor Dia at thread (min) |
2.850 |
3.242 |
4.134 |
4.917 |
6.647 |
8.376 |
10.106 |
13.835 |
17.294 |
20.752 |
26.211 |
31.67 |
Minor Dia at thread (max) |
3.010 |
3.422 |
4.334 |
5.153 |
6.912 |
8.676 |
10.441 |
14.210 |
17.774 |
21.252 |
26.771 |
32.27 |
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Chennai – 600 001,
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INDIA.
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