A2-70 Hex Bolt
A2-70 Stainless Steel Hex Head Bolt Manufacturer in India
We are a leading A2-70 hex bolt manufacturer and exporter based in Mumbai, India. Our A2-70 stainless steel hex bolts are made as per ISO 3506-1 and DIN 933 standard. They are manufactured from A2 grade austenitic stainless steel, which offers good corrosion resistance, durability, and strength. The designation “A2” indicates the stainless steel material group, while “70” represents a minimum tensile strength of 700 MPa. As a supplier of A2-70 Metric hex bolts, we serve contractors, OEMs, EPC companies and trading firms in India and overseas. Buyers who need a regular stockist for repeat orders can ask us about scheduled dispatch.
If you are looking for a reliable A2-70 hex bolt supplier for a project or regular supply? We quote fast, and we can supply to your drawing. Every lot we supply is traced to a certified heat. As an A2-70 stainless steel bolt manufacturer, we provide the chemical and mechanical test report with each shipment. We export these bolts to the Middle East, Europe, Africa, South-East Asia and the Americas.
Table of Content
A2-70 stainless steel hex bolt
Grade A2-70 metric hex bolt
A2 70 flanged hex bolt
A2-70 Stainless Steel Bolt Specifications
A2-70 Bolt Sizes
M2 to M24
A2-70 Screw Size
3/6″ to 2″
A2 70 Nuts Size
M3 – M56 | 3/6″ to 2″
Grade A2-70 Washers Size
M3 – M56 | 3/6″ to 2″
A2 70 stainless steel Machine Screws Size
M1.6 – M12
ISO Standard
ISO 3506-1 / IS 1367
A2-70 Stainless Steel Hex Bolts Length
3 mm to 200 mm
A2-70 Metric Bolts Thermal Conductivity
16.2 W/m·K at 100 °C
A2-70 Heavy Hex Bolts Temperature Range
Up to 400°C to 450°C
DIN 933 A2-70 Fully Threaded studs Threads
BSW / UNF / METRIC / BSF / UNC
A2-70 Stainless Steel Heavy Hex Nuts Standards
DIN 976, 933, 931, 934, 7991, 125 / ASME B18.2.1, B18.3
Custom Sizes
One of the leading A2-70 Hex Bolt manufacturer in India, known for its strength and durability.
A2-70 Stud Bolts Type
Fully or Fine threaded / Double-End / Tap-End
Origin
Russian / Indian / Korean / European
A2-70 Allen Bolt Condition
Threading / Cold Drawn
Manufacturing Technique
Hot forging / CNC Machined / Cold forging
A2-70 Heavy Hex Bolts Thread Pitch
Coarse Threads / Fine Threads
A2-70 Stainless Steel Bolt Finish
Passivation / Phosphating / HDG
A2-70 Stainless Steel Bolt Drive Style
- Oval
- Round
- Pan
- Cross
- Hex
- Truss
- Torx
A2-70 Metric bolts Head Types
- Socket cap head
- Flat
- Slotted Drive
- Phillips Drive
- Slotted hex washer
- Hex washer head
- Button head
ISO 3506 Grade A2-70 screws Thread Class
- 2G
- Class 1A (Loose fit)
- 3G
- Class 2A (Medium fit)
- 5 ONF
- 4G
- Class 3A (Tight fit)
Packaging
- Wooden Cases
- Carton Box
- Blister Packs
- Wooden Pallet
Certificate
- 100% Radiography Test
- Raw Materials Certificate
- UT and PMI Test
- EN 10204/3.1B
Value Added Services
- Color Coding
- Head Shank Drilling
- Laser Etching
- Head Painting
The specifications above show the range we manufacture and supply. If you are looking for a supplier of A2-70 stainless steel bolts in a size, thread or finish not listed, send us your requirement and we will confirm availability.
| Size | Pitch (mm) | Stress area (mm²) | Typical lengths (mm) |
|---|---|---|---|
| M5 | 0.80 | 14.2 | 8 – 60 |
| M6 | 1.00 | 20.1 | 10 – 100 |
| M8 | 1.25 | 36.6 | 12 – 120 |
| M10 | 1.50 | 58.0 | 16 – 150 |
| M12 | 1.75 | 84.3 | 20 – 180 |
| M14 | 2.00 | 115 | 25 – 180 |
| M16 | 2.00 | 157 | 30 – 200 |
| M20 | 2.50 | 245 | 40 – 200 |
| M24 | 3.00 | 353 | 50 – 200 |
| M30 | 3.50 | 561 | 60 – 200 |
| M36 | 4.00 | 817 | 80 – 200 |
View DIN 933 Grade A2-70 Bolts Dimension, Stockist of A2 70 hex head bolt
DIN 933 A2-70 Hex Bolt Dimensions
| Size | s (flats) | k (height) | e (corners, min) |
|---|---|---|---|
| M5 | 8 | 3.5 | 8.79 |
| M6 | 10 | 4.0 | 11.05 |
| M8 | 13 | 5.3 | 14.38 |
| M10 | 16* | 6.4 | 17.77 |
| M12 | 18* | 7.5 | 20.03 |
| M16 | 24 | 10.0 | 26.75 |
| M20 | 30 | 12.5 | 33.53 |
| M24 | 36 | 15.0 | 39.98 |
As a DIN 933 A2-70 bolt manufacturer, we control head size, thread length and tolerance on every batch, so the bolts fit standard nuts and tapped holes without rework.
Stainless Steel A2-70 Bolts Weight Chart
| HIGH STRENGTH A2-70 STRUCTURAL BOLTS AS PER IS 3757 | |||||||
|---|---|---|---|---|---|---|---|
| APPROXIMATE WEIGHT IN KGS FOR 100NOS | |||||||
| LENGTH | DIAMETER | ||||||
| M16 | M20 | M22 | M24 | M27 | M30 | M36 | |
| 40 | 10.28 | ||||||
| 45 | 11.07 | 180.30 | |||||
| 50 | 11.86 | 19.25 | 25.20 | ||||
| 55 | 12.65 | 20.50 | 26.69 | 33.74 | |||
| 60 | 13.44 | 21.73 | 28.18 | 35.22 | 48.09 | ||
| 65 | 14.23 | 22.96 | 29.67 | 37.29 | 50.34 | ||
| 70 | 15.02 | 24.19 | 31.16 | 39.07 | 52.58 | 67.25 | |
| 75 | 15.81 | 25.43 | 32.66 | 40.84 | 54.83 | 70.03 | 108.91 |
| 80 | 16.60 | 26.66 | 34.15 | 42.62 | 57.08 | 72.80 | 112.90 |
| 85 | 17.39 | 27.89 | 35.64 | 44.39 | 59.33 | 75.58 | 116.90 |
| 90 | 18.17 | 29.13 | 37.13 | 46.17 | 61.57 | 78.35 | 120.89 |
| 95 | 18.96 | 30.36 | 38.62 | 47.94 | 63.82 | 81.13 | 124.89 |
| 100 | 19.75 | 31.59 | 40.12 | 49.72 | 66.07 | 83.90 | 128.88 |
| 110 | 21.14 | 33.77 | 42.78 | 52.85 | 68.56 | 88.84 | 136.20 |
| 120 | 22.72 | 36.24 | 45.77 | 56.41 | 73.06 | 94.39 | 144.19 |
| 130 | 24.30 | 38.70 | 48.75 | 59.96 | 77.55 | 99.94 | 152.18 |
| 140 | 25.88 | 41.17 | 51.73 | 63.51 | 82.05 | 105.49 | 160.17 |
| 150 | 27.46 | 43.93 | 54.72 | 67.06 | 86.54 | 111.04 | 168.16 |
| 160 | 29.03 | 46.10 | 57.70 | 70.61 | 91.04 | 116.59 | 176.15 |
| 170 | 30.61 | 48.57 | 60.69 | 74.16 | 95.53 | 122.14 | 184.14 |
| 180 | 32.19 | 51.03 | 63.67 | 77.71 | 100.03 | 127.69 | 192.13 |
| 190 | 33.77 | 53.50 | 66.65 | 81.26 | 104.52 | 133.24 | 200.12 |
| 200 | 35.35 | 55.96 | 69.44 | 84.82 | 109.02 | 138.79 | 208.11 |
| 210 | 113.52 | 144.34 | 216.10 | ||||
| 220 | 118.01 | 149.89 | 224.09 | ||||
| 230 | 122.51 | 155.44 | 232.08 | ||||
| 240 | 127.00 | 160.99 | 240.07 | ||||
| 250 | 131.50 | 166.54 | 248.06 | ||||
| 260 | 135.99 | 172.09 | 256.05 | ||||
| 270 | 140.49 | 177.64 | 264.04 | ||||
| 280 | 144.98 | 183.19 | 272.03 | ||||
| 290 | 149.48 | 188.74 | 280.02 | ||||
| 300 | 153.97 | 194.29 | 288.01 | ||||
Popular Head Styles of A2-70 Bolt
A2-70 Hex Bolt Head Dimensions
| NOMINAL SIZE (D) | BODY DIAMETER | HEAD THICKNESS | ACROSS THE FLATS | ACROSS CORNERS | ||||
|---|---|---|---|---|---|---|---|---|
| D (MAX) | D (MIN) | H (MAX) | H (MIN) | F (MAX) | F (MIN) | C (MAX) | C (MIN) | |
| m10 | 10.00 | 9.78 | 6.63 | 6.17 | 17.00 | 15.73 | 18.48 | 17.77 |
| m12 | 12.00 | 11.73 | 7.76 | 7.24 | 19.00 | 17.73 | 20.78 | 20.03 |
| m14 | 14.00 | 13.73 | 9.09 | 8.51 | 22.00 | 20.67 | 24.25 | 23.35 |
| m16 | 16.00 | 15.73 | 10.32 | 9.68 | 24.00 | 23.67 | 27.71 | 26.75 |
| m20 | 20.00 | 19.67 | 12.88 | 12.12 | 30.00 | 29.16 | 34.64 | 32.95 |
| m24 | 24.00 | 23.67 | 15.44 | 14.56 | 36.00 | 35.00 | 41.57 | 39.55 |
| m30 | 30.00 | 29.67 | 19.48 | 17.92 | 46.00 | 45.00 | 53.12 | 50.85 |
| m36 | 36.00 | 35.61 | 23.38 | 21.63 | 55.00 | 53.80 | 63.51 | 60.79 |
| m42 | 42.00 | 41.38 | 26.97 | 25.03 | 65.00 | 62.90 | 75.06 | 71.71 |
| m48 | 48.00 | 47.38 | 31.07 | 28.93 | 75.00 | 72.60 | 86.60 | 82.76 |
| m56 | 56.00 | 55.26 | 36.2 | 33.80 | 85.00 | 82.20 | 98.15 | 93.71 |
| m64 | 64.00 | 63.26 | 41.32 | 38.68 | 95.00 | 91.80 | 109.70 | 104.65 |
| m72 | 72.00 | 71.26 | 46.45 | 43.55 | 105.00 | 101.40 | 121.24 | 115.60 |
| m80 | 80.00 | 79.26 | 51.58 | 48.42 | 115.00 | 111.00 | 132.72 | 126.54 |
| m90 | 90.00 | 89.13 | 57.74 | 54.26 | 130.00 | 125.50 | 150.11 | 143.07 |
| m100 | 90.00 | 99.13 | 63.9 | 60.10 | 145.00 | 140.00 | 167.43 | 159.60 |
Need a size that is not on the chart?
Send your drawing, size and quantity. We quote custom lengths and fine pitch threads.
Carbon
0.10 max
Silicon
1.00 max
Manganese
2.0 (Max)
Phosphorus
0.050 max
Chromium
15.0–20.0
Sulfur
0.030 max
Nickel
8.0–19.0
Copper
4.00
| Standard | Equivalent |
|---|---|
| AISI / ASTM | 304 (18-8) |
| EN / DIN | 1.4301 (X5CrNi18-10) |
| UNS | S30400 |
| JIS / BS / IS | SUS 304 / 304S31 / 04Cr18Ni10 |
A2 70 Bolt Mechanical Properties
Tensile Strength
700 MPa
Proof Stress
450 MPa
Elongation
≥ 0.4 d
Hardness
HV 220 – 330
Check Torque Chart and Tensile strength of A2-70 Stainless Steel Bolt
Tensile Strength and Proof Load of A2-70 Heavy Hex Bolts
| Size | M6 | M8 | M10 | M12 | M16 | M20 | M24 |
|---|---|---|---|---|---|---|---|
| Breaking load (kN) | 14.1 | 25.6 | 40.6 | 59.0 | 109.9 | 171.5 | 247.1 |
| Proof load (kN) | 9.0 | 16.5 | 26.1 | 37.9 | 70.7 | 110.3 | 158.9 |
| Values | A2-70 | A4-70 | A2-80 |
|---|---|---|---|
| Grade Type | 304 | 316 | 304, cold worked |
| Minimum tensile strength | 700 MPa | 700 MPa | 800 MPa |
| Minimum 0.2% proof stress | 450 MPa | 450 MPa | 600 MPa |
| Corrosion resistance | Good | Better in chloride environments | Good, similar grade to A2-70 |
| Chloride / marine | Moderate | Much better | Moderate |
| Relative cost | Usually lowest | Usually higher | Varies; often higher than A2-70 |
| Best reason to choose | Economy and general use | Corrosion resistance | Higher mechanical strength |
Not sure which grade you need? A2-70 suits most indoor and general outdoor use. Choose A4-70 near the sea or chemicals, or A2-80 where higher strength is needed. We manufacture and stock all three grades.
We supply and export A2-70 material in different types and sizes
A2 70 Stainless Steel Bolt Torque Chart
| Size | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | M24 |
|---|---|---|---|---|---|---|---|---|---|
| Torque (Nm) | 4.5 | 7.6 | 18 | 37 | 64 | 101 | 158 | 309 | 534 |
Standards and Certifications of A2-70 Hex Bolt
Applications of A2-70 Stainless Steel Hex Bolts
A2 70 Heavy Hex Bolt Manufacturer and Supplier in Mumbai, India
How to Select the Right A2-70 Stainless Steel Bolt
Environment
Chlorides, salt air or strong acids mean choose A4-70.
Load
Use the proof load table and apply a safety factor.
Size and thread
Full thread (DIN 933) or partial (DIN 931).
Head and Finish
Hex head or hex socket. Passivated or Coated
What affects cost of A2-70 hex bolt?
Raw material
Nickel and chromium prices.
Size and Quantity
Diameter, length and order volume.
Standard and finish
DIN 933, 931, 912, passivation.
Quality and Testing of A2-70 Metric Bolts
Why Choose Our A2-70 Stainless Steel Hex Bolts?
Tested every batch
PMI, tensile and proof load, hardness and dimensional checks. Marking and surface inspection before dispatch.
Packed to arrive clean
Polybags, cartons or crates with size, standard, grade and batch labels. Export packing on request.
Dispatch from Mumbai
Pan India and worldwide by road, air and sea, with technical help on size, grade and torque.
Screws Types
Industrial Products
Why Choose Us
Tools and Downloads
