Stainless Steel Fasteners
Depending on the grade of alloy to be produced as well as the application it is to be used for any SS Bolt manufacturer will make modifications with regards to its chemistry, surface finish and its manufacturing process.
For instance, grades 304 and 316 can be modified to accommodate being used at elevated temperatures as well as for applications which have specific welding needs by controlling the content of carbon during the production of SS fasteners. For instance, SS Nut Bolt Manufacturer in Mumbai recommend colombium stabilized grade 347 as an alloy that offers excellent resistance to intergranular corrosion even after being exposed to elevated temperatures in the chromium carbide precipitation range. While grade 304, according to stainless steel bolts manufacturers in India is highlighted to being one of the most economical alloy grades that offer moderate tensile properties with good resistance to corrosion.
Typically SS nut bolt tends to have good ductility and formability properties. Offering better properties in comparison to grade 304, SS Fasteners or as simply referred to as grade 316 is compatible for use in marine environments. Passivated SS Fasteners are used in those environments, where the alloy could be susceptible to getting decayed by oxidation. Just as passivated fasteners are a surface treated component, Coated / Coloured/ Polished SS Fasteners are surface treated as well. Although these Heavy Duty SS Snap Fasteners are to be produced according to the requirements of the buyer. Like, coated ss fasteners standards and grade are used to protect the external surface of the fasteners. Specifically intended to be used for drilling through thin metallic sheets, Self-Drilling SS Fasteners are available in a range of head types and drives. We are one of the leading exporters as well as Stainless Steel Fasteners Manufacturer in India. Click here for SS Fasteners Price List.
Standard Specification of Stainless Steel Fasteners
| Specifications of Stainless Steel Fasteners | ASTM A193 & ASME SA193 for bolts and ASTM A194 and ASME SA194 |
|---|---|
| Stainless Steel Nut Bolts Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
| SS Stud Bolt Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length of Stainless Steel Fasteners | 3 mm to 200 mm |
| SS Studs, Bolts Threads: | BSF, UNF METRIC, UNC, BSW or as required |
Size chart of Stud Bolts
| Size of Nuts (millimeter) |
Dia (millimeter) |
Height Of Nut (millimeter) |
||
|---|---|---|---|---|
| Nuts Hex | Jam Nuts | Nylock Nuts | ||
| 2 | 4 | 1.6 | 1.2 | - |
| 2.5 | 5 | 2 | 1.6 | - |
| 3 | 5.5 | 2.4 | 1.8 | 4 |
| 4 | 7 | 3.2 | 2.2 | 5 |
| 5 | 8 | 4 | 2.7 | 5 |
| 6 | 10 | 5 | 3.2 | 6 |
| 7 | 11 | 5.5 | 3.5 | - |
| 8 | 13 | 6.5 | 4 | 8 |
| 10 | 17 | 8 | 5 | 10 |
| 12 | 19 | 10 | 6 | 12 |
| 14 | 22 | 11 | 7 | 14 |
| 16 | 24 | 13 | 8 | 16 |
| 18 | 27 | 15 | 9 | 18.5 |
| 20 | 30 | 16 | 10 | 20 |
Stainless Steel Bolts Torque Chart
Nut Bolt Sizes Inches or # |
Threads Per Inches |
Standard Torque in Inch |
|||||
304 SS Fasteners |
316 SS Bolts |
||||||
| 1/4 | 20 | 75.2 | 78.8 | ||||
| 28 | 94.0 | 99.0 | |||||
| 5/16 | 18 | 132 | 138 | ||||
| 24 | 142 | 147 | |||||
| 7/16 | 14 | 376 | 393 | ||||
| 20 | 400 | 418 | |||||
| 3/8 | 16 | 236 | 247 | ||||
| 24 | 259 | 271 | |||||
| 1/2 | 13 | 517 | 542 | ||||
| 20 | 541 | 565 | |||||
Available Sizes Inches or # |
Bolt Threads Per Inch |
Standard Torque in Foot |
|||||
SS Nut |
SS Screw |
||||||
| 1 1/4 | 7 | 523 | 546 | ||||
| 12 | 480 | 504 | |||||
| 1 1/2 | 6 | 888 | 930 | ||||
| 12 | 703 | 732 | |||||
| 1 1/8 | 7 | 413 | 432 | ||||
| 12 | 390 | 408 | |||||
How to check ss bolt tensile strength?
The tensile strength of a material can be measured by the maximum stress that a stainless steel grade can tolerate while the component has been stretched or pulled before breaking. Most ASTM specifications mention the minimum tensile requirements in the corresponding standard. For instance, according to the ASTM F3125 specification, the minimum tensile strength requirements is about 1040 MPa. However, the Ultimate Tensile Strength can be calculated on the basis of the minimum tensile strength given in any ASTM specification. The equation given below is used to calculate the Ultimate Tensile Strength of various stainless steel bolts.
Tmin x a = S tensile
In the above mentioned formula, Tmin refers to the minimum tensile strength in psi according to the ASTM specification used by the stainless steel. While the letter a denotes the tensile stress area of the diameter. While the S tensile indicates the calculated ultimate tensile strength.