Not only is alloy grade 304 cheaper in comparison to most SS alloys, but it also provides resistance to corrosion. In general, chromium containing Passivated SS Fasteners offer good resistance to oxidation corrosion. This is because the chromium from the surface of these fasteners reacts with oxygen in the atmosphere to form a passivating oxide layer, which prevents oxidation corrosion. Typically stainless steel bolts manufacturers in India offer the passivated fasteners to those industries which deal with oxidizing conditions.
Moreover, high temperature steel grades such as grade 321 Self-Drilling SS Fasteners are able to perform superbly despite being in extremely heated temperature settings. Coated / Coloured/ Polished SS Fasteners offer some levels of protection against corrosion. On the other hand alloy 316 is a material which can be used to produce Stainless Steel Marine Fasteners. For those Heavy Duty Stainless Steel Snap Fasteners which require good corrosion resistance after being welded, buyers are given a choice of low carbon containing alloys. Low content of carbon in the stainless steel nut bolt prevents intergranular corrosion.
Being one of the most trustworthy and leading Stainless Steel Fasteners Manufacturer in India, we produced these fasteners according to the requirements of our buyers. We also offer the most reasonably price to you will come across. To know more details about the different fasteners standards and grade, you can get in touch with us. You can click here to find more info on the latest Price List given here.
| Standard Specifications | ASTM A194/ASME SA194 and ASTM A193/ ASME SA193 |
|---|---|
| SS Fasteners Standards | all International Standards and ANSI, IS, JIS, ISO, DIN, BS, ASTM UNI, ASME, GB |
| Size | M160 to M2.5, M20, M6, M3, M10, M2, M24, M12, M14, M36 M16, M4, M30, M5, M8 |
| Length | 3 to 200 mm |
| Threads | UNF METRIC, UNC, BSW, BSF or as required |
| Standards | ANSI
DIN: DIN 931, DIN 933, DIN 934, DIN 970 UTS : UNC, UNEF, NPTF, UNF, NPT, UNS ISO : ISO 4032, JIS standards, ISO 4033 |
| Source of raw materials | JSPL, Tata Steel, Usha Martin, RINL, Dhamm Steel, Mukund Steel etc. |
| Form | Hex, Square, Threading as per Round, GaugeEtc. |
| Head drive: | Phillips/Slot, Slotted, Six-Lobe, Phillips etc |
| Test Certificate | EN 10204 / 3.1 |
Heavy Duty Stainless Steel Snap Fasteners
Stainless Steel Marine Fasteners
Coloured Stainless Steel Fasteners
Passivated Stainless Steel Fasteners
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 |
| Torque Specifications | |||||||
|---|---|---|---|---|---|---|---|
Bolt Size Inches or # |
Threads Per Inch |
Standard Dry Torque in Inch-Pounds |
|||||
304 Stainless Steel |
316 Stainless Steel |
||||||
| #2 | 56 | 2.5 | 2.6 | ||||
| 64 | 3.0 | 3.2 | |||||
| #3 | 48 | 3.9 | 4.0 | ||||
| 56 | 4.4 | 4.6 | |||||
| #4 | 40 | 5.2 | 5.5 | ||||
| 48 | 6.6 | 6.9 | |||||
| #5 | 40 | 7.7 | 8.1 | ||||
| 44 | 9.4 | 9.8 | |||||
| #6 | 32 | 9.6 | 10.1 | ||||
| 40 | 12.1 | 12.7 | |||||
| #8 | 32 | 19.8 | 20.7 | ||||
| 36 | 22.0 | 23.0 | |||||
| #10 | 24 | 22.8 | 23.8 | ||||
| 32 | 31.7 | 33.1 | |||||
Bolt Size Inches or # |
Threads Per Inch |
Standard Dry Torque in Inch-Pounds |
|||||
304 Stainless Steel |
316 Stainless Steel |
||||||
| 1/4 | 20 | 75.2 | 78.8 | ||||
| 28 | 94.0 | 99.0 | |||||
| 5/16 | 18 | 132 | 138 | ||||
| 24 | 142 | 147 | |||||
| 3/8 | 16 | 236 | 247 | ||||
| 24 | 259 | 271 | |||||
| 7/16 | 14 | 376 | 393 | ||||
| 20 | 400 | 418 | |||||
| 1/2 | 13 | 517 | 542 | ||||
| 20 | 541 | 565 | |||||
Bolt Size Inches or # |
Threads Per Inch |
Standard Dry Torque in Inch-Pounds |
|||||
304 Stainless Steel |
316 Stainless Steel |
||||||
| 9/16 | 12 | 682 | 713 | ||||
| 18 | 752 | 787 | |||||
| 5/8 | 11 | 1110 | 1160 | ||||
| 18 | 1244 | 1301 | |||||
| 3/4 | 10 | 1530 | 1582 | ||||
| 16 | 1490 | 1558 | |||||
| 7/8 | 9 | 2328 | 2430 | ||||
| 14 | 2318 | 2420 | |||||
| 1 | 8 | 3440 | 3595 | ||||
| 14 | 3110 | 3250 | |||||
Bolt Size Inches or # |
Threads Per Inch |
Standard Dry Torque in Foot-Pounds |
|||||
304 Stainless Steel |
316 Stainless Steel |
||||||
| 1 1/8 | 7 | 413 | 432 | ||||
| 12 | 390 | 408 | |||||
| 1 1/4 | 7 | 523 | 546 | ||||
| 12 | 480 | 504 | |||||
| 1 1/2 | 6 | 888 | 930 | ||||
| 12 | 703 | 732 | |||||
MECHANICAL PROPERTIES |
|||||
Grade |
Tensile Strength Mpa, (Min) |
Yield Strength Mpa, (Min) |
%Age Elongation in 50mm gauge length min |
Hardness (Max) |
|
BHN |
Rb |
||||
301 |
515 |
205 |
40 |
217 |
95 |
304 |
515 |
205 |
40 |
201 |
92 |
304L |
485 |
170 |
40 |
201 |
92 |
310S |
515 |
205 |
40 |
217 |
95 |
316 |
515 |
205 |
40 |
217 |
95 |
316L |
485 |
170 |
40 |
217 |
95 |
317 |
515 |
205 |
35 |
217 |
95 |
317L |
515 |
205 |
40 |
217 |
95 |
321 |
515 |
205 |
40 |
217 |
95 |
347 |
515 |
205 |
40 |
201 |
92 |
409 |
380 |
170 |
20 |
179 |
88 |
409M |
430 |
275 |
20 |
187 |
90 |
410S |
415 |
205 |
22 |
183 |
89 |
410 |
450 |
205 |
20 |
217 |
89 |
420 |
700( max ) |
- |
15 |
217 |
95 |
430 |
450 |
205 |
22 |
183 |
89 |
JSL AUS |
515 |
205 |
40 |
217 |
95 |
JS- 203 |
515 |
205 |
40 |
217 |
95 |
301M |
515 |
205 |
40 |
217 |
95 |
Fasteners are components used to connect pieces of pipes together or other fasteners together. They are produced in different grades of metals. The stainless steel is one of the most used categories of metals for fasteners. The A2 fasteners are made from 304 type steel which has 18% chromium and 8% nickel in the composition. The A4 fasteners are made from 316 type steel which has 18% chromium, 8% zinc and 2-3% molybdenum. So that the A4 grade fasteners have high corrosion resistance than the A2 grade fasteners due to the addition of molybdenum in the composition.