Stainless Steel Products
A4-70 Stainless Steel Bolts
Specification
CHEMICAL & MECHANICAL COMPOSITION
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A470 Bolt, A4-70 Stainless Steel Screw, A4-70 Threaded Rod, A4-70 Nut Material, A4-70 Fastener, Stainless Steel Bolt Grade A4-70, Socket Head Cap Screw A4-70, Hex Bolt A4-70
Detailed Information
Prashaant Steel & Alloys is well-known for its manufacturing and export of A4-70 and A4-80 Stainless Steel Bolts. We supply various sorts of fasteners that are in high demand and will continue to be in high demand. Our customers may customise their orders completely, including the packaging. We take all necessary precautions during delivery to assure that no single product is damaged.
A4-70 Stainless Steel Bolt is made of 316L or 316 stainless steel austenite grade, with the letter “A” dedicated to the cold working method. We also provide all grades with client-specified specifications, with a size range of M10 to M100 for A4-70 SS Bolt. Bolts are sought after by heavy machinery since they are significantly more durable due to their geometric forms and great tensile strength.
The A2-80 Bolt is the class’s fastener, with ASTM A194 and A193 standards. Uv A2 80 Bolt, for example, is a member of the aforementioned group. Sulphur and silicon, in addition to phosphorus and manganese, are significant elements, with nickel accounting for 8% and chromium accounting for 18% in A2-80 Fasteners. They’re generally scaled up from 12 inches to 24 inches.
The A4 70 Grade Bolts offer high acidic corrosion resistance and chloride ion corrosion resistance thanks to their composition. As a result, these fasteners are suited for maritime industrial applications as well as acidic environments. The difference between an a4-70 bolt and an 8.8 bolt is that the 8.8 bolt has a higher tensile strength and is constructed of different material composition. Other classes of fasteners are constructed of the same material, but their mechanical characteristics are different. The minimum tensile strength is the difference between a4-70 and a4-80. The A4-70 grade has a minimum tensile strength of 700 MPa, whereas the A4-80 grade has a minimum tensile strength of 800 MPa. Please contact us for additional information on the various fasteners as well as price.
A4-70 Stainless Steel Bolts Specification
|
Product name |
A4-70 Stainless Steel Bolts |
|
Place of Origin |
India |
|
Standard |
ISO 4017, DIN931, GB5783, DIN, ASTM, ANSI, JIS, EN, AS |
|
DIN Standard |
B.S. DIN933 DIN931 DIN934 DIN912 DIN603 DIN6923 |
|
Surface treatment |
Passivation /plain |
|
A4-70 Stainless Steel Bolts Size |
M2 – M100 |
|
A4-70 Stainless Steel Bolts Diameter |
M3-M60 |
|
A4-70 Stainless Steel Bolts Length |
6mm-500mm |
|
Head |
Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc |
|
Neck type |
Hex, Square, Triangular, Oval & Knurled etc |
|
Drive type |
Phil, Slotted, Hex socket, Torx & square slot etc |
|
A4-70 Stainless Steel Bolts Application |
Wind tower, Nuclear power, Railway, Automotive industry, Construction, Electronic industry |
|
Dimensions |
ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded. |
|
Drive Style |
Type I |
|
A4-70 Stainless Steel Bolts Material |
18-8 Stainless Steel, stainless steel ss 304/ SS316 A2/A4, SS201, SS303, SS304, SS316, SS316L, SS904L, A2-70; A4-70; A4-80 |
|
Thread Requirements |
ASME B1.1, UNC & UNF, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge) |
|
Finish |
Per ASTM A380/A380M |
|
Finishing |
Zinc Plated (Yellow, White, Blue, Black), Hop Dip Galvanized (HDG) phosphorization, Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated, Brass Plated, Tin Plated, Black Plated, Copper Plated, Gold Plated, Salt fog test |
|
Stock Products |
Stainless steel: All DIN, GB Standard and part ASNI standard A4-70 Stainless Steel Bolts, Example: ISO7380, DIN7981, DIN7982, DIN916, DIN913, DIN7985, DIN912 |
|
Production technology |
Cold Forged |
|
Manufacturing Process |
Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing |
|
MOQ |
10 pieces |
|
Delivery time |
Regular product is about 7-15 days, custom product will according to special requirement |
|
Others |
OEM, ODM, ±0.03MM tolerance |
|
Surface treatment of A4-70 Stainless Steel Bolts |
|
|
Coatings |
Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
|
Tolerance of A4-70 Stainless Steel Bolts |
+/-0.01mm to +/-0.05mm |
|
Samples |
Yes |
A4 70 Bolts Chemical Composition
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
N |
|
|
A4-70 |
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 |
|
316 |
Min |
– |
– |
– |
0 |
– |
16.0 |
2.00 |
10.0 |
– |
|
|
Max |
0.08 |
0.75 |
2.0 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
0.10 |
||
|
316L |
Min |
– |
– |
– |
– |
– |
16.0 |
2.00 |
10.0 |
– |
|
|
Max |
0.03 |
0.75 |
2.0 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
0.10 |
||
|
316H |
Min |
0.04 |
0 |
0.04 |
– |
– |
16.0 |
2.00 |
10.0 |
– |
|
|
Max |
0.10 |
0.75 |
0.10 |
0.045 |
0.03 |
18.0 |
3.00 |
14.0 |
– |
A4 70 Stainless Steel Bolt Mechanical Properties
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elong (% in 50mm) min |
Hardness Rockwell B (HR B) max |
Brinell (HB) max |
|
A4-70 |
700 |
450 |
40 |
Not required |
Not required |
|
316 |
515 |
205 |
40 |
95 |
217 |
|
316L |
485 |
170 |
40 |
95 |
217 |
|
316H |
515 |
205 |
40 |
95 |
217 |
A4 70 Bolt Stainless Steel Physical Properties
|
Grade |
Density (kg/m³) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100 °C (J/kg.K) |
Elec Resistivity (nΩ.m) |
|||||
|
|
||||||||||
|
316/L/H |
8000 |
193 |
|
|
500 |
740 |
A4 70 Bolt Stainless Steel Price List
View price list of Socket Head Cap Screw, Stud Bolt, Hex Bolt in A4-70 Stainless Steel
| Material | Price in India |
|---|---|
| A4-70 Bolts, DIN 912, M 20 X 50 | INR 46/Pcs |
| A4-70 Nut Bolt Washer, DIN 931, A4-70 M 20 X 260 | INR 182/Pcs |
A4-70 Stainless Steel Bolts Weight Chart
|
Bolt Size |
A (max) |
B |
C (min) |
D |
E |
F Thread Length for Bolt Length |
||
|
max |
min |
6″ and shorter |
over 6″ |
|||||
|
1/4″ |
0.260 |
7/16 |
0.484 |
11/64 |
0.03 |
0.01 |
0.750 |
1.000 |
|
5/16″ |
0.324 |
1/2 |
0.552 |
7/32 |
0.03 |
0.01 |
0.875 |
1.125 |
|
3/8″ |
0.388 |
9/16 |
0.620 |
1/4 |
0.03 |
0.01 |
1.000 |
1.250 |
|
7/16″ |
0.452 |
5/8 |
0.687 |
19/64 |
0.03 |
0.01 |
1.125 |
1.375 |
|
1/2″ |
0.515 |
3/4 |
0.826 |
11/32 |
0.03 |
0.01 |
1.250 |
1.500 |
|
5/8″ |
0.642 |
15/16 |
1.033 |
27/64 |
0.06 |
0.02 |
1.500 |
1.750 |
|
3/4″ |
0.768 |
1-1/8 |
1.240 |
1/2 |
0.06 |
0.02 |
1.750 |
2.000 |
|
7/8″ |
0.895 |
1-5/16 |
1.447 |
37/64 |
0.06 |
0.02 |
2.000 |
2.250 |
|
1″ |
1.022 |
1-1/2 |
1.653 |
43/64 |
0.09 |
0.03 |
2.250 |
2.500 |
|
1-1/8″ |
1.149 |
1-11/16 |
1.859 |
3/4 |
0.09 |
0.03 |
2.500 |
2.750 |
|
1-1/4″ |
1.277 |
1-7/8 |
2.066 |
27/32 |
0.09 |
0.03 |
2.750 |
3.000 |
|
1-3/8″ |
1.404 |
2-1/16 |
2.273 |
29/32 |
0.09 |
0.03 |
3.000 |
3.250 |
|
1-1/2″ |
1.531 |
2-1/4 |
2.480 |
1 |
0.09 |
0.03 |
3.250 |
3.500 |
|
1-3/4″ |
1.785 |
2-5/8 |
2.893 |
1-5/32 |
0.12 |
0.04 |
3.750 |
4.000 |
|
2″ |
2.039 |
3 |
3.306 |
1-11/32 |
0.12 |
0.04 |
4.250 |
4.500 |
|
2-1/4″ |
2.305 |
3-3/8 |
3.719 |
1-1/2 |
0.19 |
0.06 |
4.750 |
5.000 |
|
2-1/2″ |
2.559 |
3-3/4 |
4.133 |
1-21/32 |
0.19 |
0.06 |
5.250 |
5.500 |
|
2-3/4″ |
2.837 |
4-1/8 |
4.546 |
1-13/16 |
0.19 |
0.06 |
5.750 |
6.000 |
|
3″ |
3.081 |
4-1/2 |
4.959 |
2 |
0.19 |
0.06 |
6.250 |
6.500 |
|
3-1/4″ |
3.335 |
4-7/8 |
5.372 |
2-3/16 |
0.19 |
0.06 |
6.750 |
7.000 |
|
3-1/2″ |
3.589 |
5-1/4 |
5.786 |
2-5/16 |
0.19 |
0.06 |
7.250 |
7.500 |
|
3-3/4″ |
3.858 |
5-5/8 |
6.198 |
2-1/2 |
0.19 |
0.06 |
7.750 |
8.000 |
|
4″ |
4.111 |
6 |
6.612 |
2-11/16 |
0.19 |
0.06 |
8.250 |
8.500 |
Notes:
Body Diameter – There may be a reasonable swell or fin under the head or die seam on the body not to exceed the basic bolt diameter by the following:
- 0.030″ for sizes up to 1/2″
- 0.050″ for sizes 5/8″ and 3/4″
- 0.060″ for sizes over 3/4″ to 1-1/4″
- 0.090″ for sizes over 1-1/4″ to 2″
- 0.120″ for sizes over 2″ to 3″
- 0.190″ for sizes over 3″
A4-70/A4-80 STAINLESS STEEL HEX BOLT DIMENSIONS
|
Diameter |
Load 1)Force at 0.2% yield point N |
Initial Stressing ForceN |
Tightening TorqueNm |
Force in service N |
||
|
Axial Static |
Axial Dynamic |
Radial Static or Dynamic |
||||
|
M3 |
2250 |
1420 |
0.9 |
610 |
360 |
120 |
|
M4 |
3960 |
2490 |
2.2 |
1070 |
640 |
210 |
|
M5 |
6390 |
4030 |
4.3 |
1730 |
1040 |
350 |
|
M6 |
9040 |
5700 |
7.3 |
2440 |
1470 |
490 |
|
M8 |
16470 |
10380 |
17.7 |
4450 |
2670 |
890 |
|
M10 |
26100 |
16440 |
35.5 |
7050 |
4230 |
1410 |
|
M12 |
37930 |
23900 |
61.3 |
10240 |
6150 |
2050 |
|
M16 |
70650 |
44510 |
147.1 |
19080 |
11450 |
3820 |
|
M20 |
110250 |
69460 |
285.1 |
29770 |
17860 |
5950 |
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