A4-70 Hex Bolt

A4 50 Bolts Nuts Mechanical Characteristics

Tensile Strength (MPa) min Hardness
Rockwell B (HR B) max
Elong
(% in 50mm) min
Yield Strength
0.2% Proof
(MPa) min
Brinell (HB) max
700 Not required 40 450 Not required

Chemical Composition of A4-80 Stainless Steel Stud bolt

Grade   C Si Mn P S Cr Mo Ni Cu N
A4 Min - - - - - 16.0 2.0 10.5 - -
ISO Max 0.08 1.00 2.00 0.045 0.03 18.5 3.0 14.0 1.0 -
A4-70 Min - - - - - 16.0 2.0 11.5 - 0.12
ISO² Max 0.03 1.00 2.00 0.045 0.03 18.5 3.0 14.0 1.0 0.22

A4-50 material specification chart

Specification ASTM A193, A194 / ASME SA193, SA194, ASTM F1554, F593, F594 / ASME F1554, SF593, F594
In Form of:
  • Hex
  • Round
  • Square
  • Threading as per Gauge.
Available Lengths From 3 - 200 mm
Threads BSF, BSW, METRIC, UNC, UNF or as required
Sizes Range M03 – M56 | 3/6" upto 2"

Dimensional Chart of A4-70 Hex Bolt

Dimensional Chart of A4-70 Hex Bolt

Minimal Size (D) HEAD THICKNESS BODY DIAMETER CORNERS THE FLATS
  H H (MIN) D D (MIN) C C (MIN) F (MAX) F (MIN)
m12 7.76 max 4.24 12.00 max 11.73 20.78 max 20.03 19.00 17.73
m10 6.63 max 6.17 10.00 max 9.78 18.48 max 17.77 17.00 15.73
m90 57.74 max 54.26 90.00 max 89.13 150.11 max 143.07 130.00 125.50
m14 9.09 max 8.51 14.00 max 13.73 24.25 max 23.35 22.00 20.67
m80 51.58 max 48.42 80.00 max 79.26 132.72 max 126.54 115.00 111.00
m16 10.32 max 9.68 16.00 max 15.73 27.71 max 26.75 24.00 23.67
m72 46.45 max 43.55 72.00 max 71.26 121.24 max 115.60 105.00 101.40
m20 12.88 max 12.12 20.00 max 19.67 34.64 max 32.95 30.00 29.16
m24 15.44 max 14.56 24.00 max 23.67 41.57 max 39.55 36.00 35.00
m42 26.97 max 25.03 42.00 max 41.38 75.06 71.71 65.00 62.90
m30 19.48 max 17.92 30.00 max 29.67 53.12 50.85 46.00 45.00
m100 63.9 max 60.10 90.00 max 99.13 167.43 159.60 145.00 140.00
m36 23.38 max 21.63 36.00 max 35.61 63.51 60.79 55.00 53.80
m64 41.32 max 38.68 64.00 max 63.26 109.70 104.65 95.00 91.80
m48 31.07 max 28.93 48.00 max 47.38 86.60 82.76 75.00 72.60
m56 36.2 max 33.80 56.00 max 55.26 98.15 93.71 85.00 82.20

SS A4-70 Bolts Applications

  • Power Generation
  • Off-Shore Oil Drilling Companies
  • Gas Processing
  • Petrochemicals
  • Pharmaceuticals
  • Specialty Chemicals
  • Chemical Equipment
  • Pharmaceutical Equipment
  • Heat Exchangers
  • Sea Water Equipment
  • Pulp and Paper Industry
  • Condensers

Weight Chart of A4 70 Nuts

lngth Daim.
M20 M16 M27 M22 M24 M36 M30
45 180.30 11.07
50 19.25 11.86 25.20
40 10.28
55 20.50 12.65 26.69 33.74
60 21.73 13.44 48.09 28.18 35.22
65 22.96 14.23 50.34 29.67 37.29
70 24.19 15.02 52.58 31.16 39.07 67.25
75 25.43 15.81 54.83 32.66 40.84 108.91 70.03
80 26.66 16.60 57.08 34.15 42.62 112.90 72.80
90 29.13 18.17 61.57 37.13 46.17 120.89 78.35
95 30.36 18.96 63.82 38.62 47.94 124.89 81.13
100 31.59 19.75 66.07 40.12 49.72 128.88 83.90
85 27.89 17.39 59.33 35.64 44.39 116.90 75.58
110 33.77 21.14 68.56 42.78 52.85 136.20 88.84
130 38.70 24.30 77.55 48.75 59.96 152.18 99.94
140 41.17 25.88 82.05 51.73 63.51 160.17 105.49
150 43.93 27.46 86.54 54.72 67.06 168.16 111.04
120 36.24 22.72 73.06 45.77 56.41 144.19 94.39
160 46.10 29.03 91.04 57.70 70.61 176.15 116.59
180 51.03 32.19 100.03 63.67 77.71 192.13 127.69
190 53.50 33.77 104.52 66.65 81.26 200.12 133.24
170 48.57 30.61 95.53 60.69 74.16 184.14 122.14
200 55.96 35.35 109.02 69.44 84.82 208.11 138.79
210 113.52 216.10 144.34
230 122.51 232.08 155.44
240 127.00 240.07 160.99
220 118.01 224.09 149.89
250 131.50 248.06 166.54
270 140.49 264.04 177.64
280 144.98 272.03 183.19
260 135.99 256.05 172.09
290 149.48 280.02 188.74
300 153.97 288.01 194.29

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A4-80 Steel Stud bolt

Bangladesh, Jakarta -Indonesia, Dubai, Los Alamos -Mexico, Hong Kong, Turkey, Argentina, Germany, China, Oman, Saudi Arabia (KSA).

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A4-50 Bolts

Malaysia, Poland, Romania, Indonesia, Malaysia, Iran, Qatar, New Zealand, Brazil, Netherlands, United Arab Emirates (UAE).

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A4 50 Bolts Nuts

USA, Chile, Ellington -United States, Canada, Sweden, United States, Greece, Singapore, Vietnam, Mexico, Denmark, Thailand, Finland.

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A4-80 Stainless Steel Stud bolt

Russia, Belgium, Norway, Egypt, Bahrain, Philippines, South Korea, Peru, Malaysia, Tehran -Iran, Colombia, Italy.

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A4-50 material

Spain, Jakarta, Europe, Australia, Jordan, Dammam -KSA, Japan, Istanbul -Turkey, NY 12203 (USA), Dubai -UAE, Kuala Lumpur.

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A4-70 Bolt

France, Singapore, Taiwan, South Africa, Portugal, Morocco, Czechia, Kuwait, Austria, United Kingdom (UK), Nigeria.