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.

Stainless Steel Fasteners

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
Height Of Nut
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 #
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.