Stainless Steel Fasteners

ASTM A193 Stud Bolt, Nut and SS Bolts manufacturer in India

Fasteners are available in different materials as well as in different shapes and sizes. Stainless Steel Fasteners are designed to be used in high temperature and high pressure applications. These fasteners are available in different grades that decide the applications that they can be best suited for. For instance, a marine grade bolt belongs to a different grade as compared to regular stainless steel. ASTM A193 SS Bolt has high tensile strength and is used for fittings in high temperature and high pressure service, flanges, valves, and pressure vessels. They usually come under B7, B16, B8, and B8M.

SS Marine Fasteners Supplier, Check Price List of Coated Stainless Steel Fasteners

However, their selection for a particular application depends upon mechanical properties, service environment, and temperature characteristics. Stainless Steel Nut and Screw are usually categorized into 3 types ferritic, austenitic and martensitic based on their chemical composition. To provide these fasteners with the additive value they are coated with chemicals or are colored. Coated Stainless Steel Fasteners are covered with zinc, xylon, or Teflon. Whereas the colored fasteners may be available in black, golden, charcoal grey, blue, bronze, red, or green. They are put through passivation treatment. This removes the chemical reactivity on the surface by removing the free ions with the help of nitric or citric acid.

Good corrosion resistance is offered by SS Marine Fasteners when coated with chromium oxide. A thin layer of oxide forms on the surface of the fastener which prevents the fastener from rusting and corrosion. Self drill SS Screws can be polished by treating with a process such as cold rolling, softening, and de-scaling. Post this process they remain grey however the smoothness, and brightness, of the fasteners, are improved. Stainless Steel Toggle Bolts are usually spring loaded and go back to their original position after releasing them. The benefit of using a stainless steel fastener is that they are more powerful, easy to install, and low failure rate. Though the initial cost is high the maintenance cost is said to be less.

Coated Stainless Steel Fasteners

Spec Chart of Stainless Steel Fasteners

Standard DIN, ASTM and BS
Specification ASTM A193 8C, B6, B8, B8M, B8C, A194 G8, B8T, 8M, 8T
Length 3 to 200 MM
Sizes M3 - M56
3/6 Inch to 2 Inch
Size Range M1.6 - M12
Manufacturing process Wire Drawing, Heat Treatment, Inspection, Insert tapping, Cold Heading, surface Plating, Packing
Export To Dubai, Brazil, Singapore, Indonesia, Ukraine, India, Oman, Spain, Canada, USA, Ireland, Iran, Egypt, Saudi Arabia, Thailand, Korea, Peru

Standard Weight Chart of Metric Stainless Steel Fasteners

LENGTH DIAMETER
M 5 M 6 M 8 M 10 M 12 M 14 M 16 M 18 M 20 M 22
16 mm 0.448 0.743 1.590 3.211
20 mm 0.598 0.812 1.711 3.411 4.892
25 mm 0.660 0.897 1.871 3.660 5.252 8.170
30 mm 0.737 1.010 2.070 3.912 5.574 9.690 10.707 18.657
35 mm 0.804 1.120 2.271 4.223 5.974 10.000 11.416 16.026 19.608
40 mm 0.881 1.230 2.470 4.533 6.410 10.288 12.107 16.667 20.747
45 mm 0.958 1.340 2.671 4.840 6.859 10.504 12.821 17.241 21.739
50 mm 1.030 1.450 2.870 5.155 7.299 11.261 13.624 17.857 22.727 28.409
55 mm 1.560 3.071 5.464 7.740 11.628 14.409 18.868 23.810 30.120
60 mm 1.670 3.270 5.774 8.183 12.255 15.244 20.000 25.126 32.051
65 mm 1.781 3.472 6.083 8.621 12.626 16.026 21.008 26.455 34.014
70 mm 1.890 3.671 6.394 9.058 12.987 16.835 22.124 27.778 35.461
75 mm 2.000 3.873 6.702 9.506 13.228 17.606 23.256 29.070 39.063
80 mm 2.111 4.072 7.013 10.000 13.889 18.248 24.510 30.303 40.000
90 mm 4.472 7.634 10.917 14.925 19.841 26.042 33.113 41.667
100 mm 4.873 8.251 11.820 16.340 21.459 27.778 35.714 46.296
110 mm 8.881 12.723 17.730 23.041 31.250 38.168 47.170
120 mm 9.506 13.624 18.797 24.631 32.895 40.984 50.000
130 mm 10.101 14.535 20.000 26.316 34.722 43.478 52.632
140 mm 10.707 15.432 20.833 27.933 35.461 46.296 55.556
150 mm 11.312 16.340 22.222 29.412 37.594 48.544 58.824
160 mm 11.905 17.241 24.272 31.056 40.984 50.505 61.728
170 mm 12.500 18.116 32.680 53.191 64.935
180 mm 13.123 19.011 26.882 34.247 55.556 67.568
190 mm 13.736 19.920 35.971 58.140 70.423
200 mm 14.327 20.833 29.586 37.594 49.020 60.976 73.529
220 mm 15.528 22.624 40.650 65.789 79.365
240 mm 16.722 24.510 43.860 71.429 84.746
250 mm 17.301 25.381 45.455 74.627 87.719
260 mm 17.921 26.316 47.170 76.923 90.909
280 mm 19.157 28.090 50.505 81.967 98.039
300 mm 20.325 29.940 53.763 87.719 104.167
320 mm 31.646 56.818 92.593
340 mm 33.557 60.241 98.039
360 mm 35.211 63.291 104.167
380 mm 37.037 66.667 108.696
400 mm 39.063 69.444 113.636

Metric Conversion Table of ASTM A193 Stainless Steel Nut

US
(inches)
Metric
(millimeters)
US
(inches)
Metric
(millimeters)
1/16 1.6 1-1/2 38
1/8 3.2 1-5/8 41
3/16 4.8 1-3/4 45
1/4 6.4 1-7/8 48
5/16 7.9 2 51
3/8 9.5 2-1/4 57
11/16 17 3-1/2 89
7/16 11 2-1/2 64
1/2 13 2-3/4 70
9/16 14 3 76
5/8 16 3-1/4 83
3/4 19 3-3/4 95
13/16 21 4 102
7/8 22 4-1/2 114
15/16 24 5 127
1-1/8 29 6 152
1-1/4 32 6-1/2 165
1 25 5-1/2 140
1-3/8 35 7 178

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Stainless Steel Fasteners Price List

Price list of Stainless Steel Fasteners SS Marine Fasteners Price in India (INR) SS Fasteners Price in USD Polished SS Fasteners Price in UAE Dirham
STAINLESS STEEL SELF-LOCKING Bolt, D1=10,L=40 Per Unit INR 553 7.44 USD 27.30 UAE Dirham
Stainless steel Hexagon Nut #M4 Per Unit INR 20 0.27 USD 0.99 UAE Dirham
SS 304 HALF HEX SMALL FLANG (RIVET NUTS) SIZE M8 Per Kg INR 587 7.89 USD 28.99 UAE Dirham
TYPE 18-8 STAINLESS STEEL-FULLY THREADED STUD 3/8 INCH Per Unit INR 385 5.18 USD 19.01 UAE Dirham

Polished SS Bolts Torque Chart

Threads
Per Inch
SS Bolt Size
Inches or #
in Inch-Pounds Standard Dry Torque
304 SS Fasteners
316
SS Fasteners
56 #2 2.6 2.5
64 3.2 3.0
48 #3 4.0 3.9
56 4.6 4.4
40 #4 5.5 5.2
48 6.9 6.6
40 #5 8.1 7.7
44 9.8 9.4
32 #6 10.1 9.6
40 12.7 12.1
32 #8 20.7 19.8
36 23.0 22.0
24 #10 23.8 22.8
32 33.1 31.7
 
Bolt Size in inch
or #
in Inch-Pounds Standard Dry Torque
304 Stainless Steel Fasteners
 
  1/4 78.8  
99.0  
  5/16 138  
147  
  3/8 247  
271  
  7/16 393  
418  
  1/2 542  
565  
 
Bolt Size in
Inches or #
in Inch-Pounds Standard Dry Torque
304 Stainless Steel Fasteners
 
  9/16 713  
787  
  5/8 1160  
1301  
  3/4 1582  
1558  
  7/8 2430  
2420  
  1 3595  
3250  
 
Bolt Size in
Inches or #
in Foot-Pounds Standard Dry Torque
304 Stainless Steel Fasteners
 
  1 1/8 432  
408  
  1 1/4 546  
504  
  1 1/2 930  
732  

Chemical Structure of ASTM A193 SS Bolt

Grade C Mn Si P S Cr Mo Ni N Ti Fe
304 min. 18.0 8.0
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10
304L min. 18.0 8.0
max. 0.030 2.0 0.75 0.045 0.030 20.0 12.0 0.10
304H min. 0.04 18.0 8.0
max. 0.010 2.0 0.75 0.045 0.030 20.0 10.5
SS 310H 0.04 0.10 2 max 1.00 max 0.045 max 0.030 max 24.00 26.00 19.00 21.00 53.885 min
316 min. 16.0 2.03.0 10.0  
max. 0.035 2.0 0.75 0.045 0.030 18.0 14.0  
316L min. 16.0 2.03.0 10.0    
max. 0.035 2.0 0.75 0.045 0.030 18.0 14.0  
316TI 0.08 max 10.00 14.00 2.0 max 0.045 max 0.030 max 16.00 18.00 0.75 max 2.00 3.00
317 0.08 max 2 max 1 max 0.045 max 0.030 max 18.00 20.00 3.00 4.00 57.845 min
SS 317L 0.035 max 2.0 max 1.0 max 0.045 max 0.030 max 18.00 20.00 3.00 4.00 11.00 15.00 57.89 min
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 19.00 9.00 12.00 0.10 max 5(C+N) 0.70 max
SS 321H 0.04 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 19.00 9.00 12.00 0.10 max 4(C+N) 0.70 max
347/ 347H 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 20.00 9.0013.00
410 min. 11.5
max. 0.15 1.0 1.00 0.040 0.030 13.5 0.75
446 min. 23.0 0.10
max. 0.2 1.5 0.75 0.040 0.030 30.0 0.50 0.25
904L min. 19.0 4.00 23.00 0.10
max. 0.20 2.00 1.00 0.045 0.035 23.0 5.00 28.00 0.25
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Equivalent material of Stainless Steel Nut and Screw

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 304 1.4301 S30400 SUS 304 304S31 08Х18Н10 Z7CN18‐09 X5CrNi18-10
SS 304L 1.4306 / 1.4307 S30403 SUS 304L 3304S11 03Х18Н11 Z3CN18‐10 X2CrNi18-9 / X2CrNi19-11
SS 304H 1.4301 S30409 - - - - -
SS 310 1.4841 S31000 SUS 310 310S24 20Ch25N20S2 - X15CrNi25-20
SS 310S 1.4845 S31008 SUS 310S 310S16 20Ch23N18 - X8CrNi25-21
SS 310H - S31009 - - - - -
SS 316 1.4401 / 1.4436 S31600 SUS 316 316S31 / 316S33 - Z7CND17‐11‐02 X5CrNiMo17-12-2 / X3CrNiMo17-13-3
SS 316L 1.4404 / 1.4435 S31603 SUS 316L 316S11 / 316S13 03Ch17N14M3 / 03Ch17N14M2 Z3CND17‐11‐02 / Z3CND18‐14‐03 X2CrNiMo17-12-2 / X2CrNiMo18-14-3
SS 316H 1.4401 S31609 - - - - -
SS 316Ti 1.4571 S31635 SUS 316Ti 320S31 08Ch17N13M2T Z6CNDT17‐123 X6CrNiMoTi17-12-2
SS 317 1.4449 S31700 SUS 317 - - - -
SS 317L 1.4438 S31703 SUS 317L - - - X2CrNiMo18-15-4
SS 321 1.4541 S32100 SUS 321 - - - X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H - - - X12CrNiTi18-9
SS 347 1.4550 S34700 SUS 347 - 08Ch18N12B - X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H - - - X6CrNiNb18-12
SS 904L 1.4539 N08904 SUS 904L 904S13 STS 317J5L Z2 NCDU 25-20 X1NiCrMoCu25-20-5

Mechanical Properties Chart of SS Marine Fasteners

Grade Melting Point Tensile Strength Yield Strength (0.2%Offset) Density Elongation
304/ 304L 1400 °C 75000 Psi, MPa 515 30000 Psi, MPa 205 8.0 g/cm3 0.35
316L 1399 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 8.0 g/cm3 0.35
304H 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 8.0 g/cm3 0.4
317 1400 °C (2550 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 7.9 g/cm3 0.35
347 1454 °C (2650 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 8.0 g/cm3 0.35
321 1457 °C (2650 °F) Psi 75000 , MPa 515 Psi 30000 , MPa 205 8.0 g/cm3 0.35
904L 1350 °C (2460 °F) Psi 71000 , MPa 490 Psi 32000 , MPa 220 7.95 g/cm3 0.35

Property Class of Stainless Steel Bolts and Nuts

SS Fasteners Type SS Fasteners SIZE PROPERTY CLASS SS Fasteners Standard
Socket Head Cap Screw M3 to M30 A2 - 70/80, A4 - 70/80 DIN 912 / ISO 4762
Hex Head Screw (Full Thread) M3 to M30 A2 - 70/80, A4 - 70/80 DIN 933 / ISO 4017
Hex Nut M3 to M30 A2 - 70/80, A4 - 70/80 DIN 934 / ISO 4032
Plain Washer M3 to M64 A2, A4 DIN 125 A
Square - Section Spring Washer M3 to M36 A2, A4 DIN 7980
Hex Head Bolt (Partial Thread) M4 to M30 A2 - 70/80, A4 - 70/80 DIN 931 / ISO 4014
Threaded Rod M3 to M36 A2 - 70/80, A4 - 70/80 DIN 975
Flat - Section Spring Washer M3 to M36 A2, A4 DIN 127 B
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Types of Stainless Steel Fasteners

Dimensions Of Stainless Steel Bolts

Dimensions Of Stainless Steel Hex Bolts

NOMINAL SIZE (D) BODY DIAMETER HEAD Thickness FLATS 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 4.24 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

Dimensions Table of SS Nuts

Stainless Steel Hex Nuts Dimension

Nominal Sizes or Basic Major Thread Dia F G H
Width
Across Flats
Width
Across Corners
Thickness
Basic Max Min Max Min Basic Max Min
1/4 .2500 7/16 .438 .428 .505 .488 7/32 .226 .212
3/8 .3750 9/16 .562 .551 .650 .628 21/64 .337 .479
5/16 .3125 1/2 .500 .489 .577 .557 17/64 .273 .258
7/16 .4375 11/16 .688 .675 .794 .768 3/8 .385 .365
9/16 .5625 7/8 .875 .861 1.010 .982 31/64 .496 .473
1/2 .5000 3/4 .750 .736 .866 .840 7/16 .448 .427
5/8 .6250 15/16 .938 .922 1.083 1.051 35/64 .559 .535
7/8 .8750 1-5/16 1.312 1.269 1.516 1.447 3/4 .776 .724
3/4 .7500 1-1/8 1.125 1.088 1.299 1.240 41/64 .665 .617
1 1.0000 1-1/2 1.500 1.450 1.732 1.653 55/64 .887 .831
1-3/8 1.3750 2-1/16 2.062 1.994 2.382 2.273 1-11/64 1.206 1.138
1-1/8 1.1250 1-11/16 1.688 1.631 1.949 1.859 31/32 .999 .939
1-1/2 1.500 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.ASTM A194 GR. 8 1.245
1-3/4 1.7500 2-5/8 2.625 2.538 3.031 2.893 1-1/2 1.540 1.460
1-5/8 1.6250 2-7/16 2.438 2.356 2.815 2.686 1-25/64 1.429 1.353
2 2.0000 3 3.000 2.900 3.464 3.306 1-23/32 1.763 1.675
2-1/2 2.5000 3-3/4 3.750 3.625 4.330 4.133 2-5/32 2.209 2.105
2-1/4 2.2500 3-3/8 3.375 3.263 3.897 3.719 1-15/16 1.986 1.890
2-3/4 2.7500 4-1/8 4.125 3.988 4.763 4.546 2-3/8 2.431 2.319

Stainless Steel Heavy Hex Nuts Dimensions Chart

Dimensions Of Stainless Steel Hex Bolts

Nominal Size or Basic Major Thread Diameter F G H
Width Across Flat Width Across Corner Thickness
Basic Maximum Min Maximum Min Basic Maximum Min
1/4 .2500 1/2 .500 .488 .577 .556 15/64 .250 .218
5/16 .3125 9/16 .562 .546 .650 .622 19/64 .314 .280
3/8 .3750 11/16 .688 .669 .794 .763 23/64 .377 .341
7/16 .4375 3/4 .750 .728 .866 .830 27/64 .441 .403
1/2 .5000 7/8 .875 .850 1.010 .969 31/64 .504 .464
9/16 .5625 15/16 .938 .909 1.083 1.037 35/64 .568 .526
5/8 .6250 1-1/16 1.062 1.031 1.227 1.175 39/64 .631 .587
3/4 .7500 1-1/4 1.250 1.212 1.443 1.382 47/64 .758 .710
7/8 .8750 1-7/16 1.438 1.394 1.660 1.589 55/64 .885 .833
1 1.0000 1-5/8 1.325 1.575 1.876 1.796 63/64 1.012 .956
1-1/8 1.1250 1-13/16 1.812 1.756 2.093 2.002 1-7/64 1.139 1.079
1-1/4 1.2500 2 2.000 1.938 2.309 2.209 1-7/32 1.251 1.187
1-3/8 1.3750 2-3/16 2.188 2.119 2.526 2.416 1-11/32 1.378 1.460
1-1/2 1.5000 2-3/8 2.375 2.300 2.742 2.622 1-15/32 1.505 1.433
1-5/8 1.6250 2-9/16 2.562 2.481 2.959 2.828 1-19/32 1.632 1.556
1-3/4 1.7500 2-3/4 2.750 2.662 3.175 3.035 1-23/32 1.759 1.679
2 2.0000 3-1/8 3.125 3.025 3.608 3.449 1-31/32 2.013 1.925
2-1/4 2.2500 3-1/2 3.500 3.388 4.041 3.862 2-13/64 2.251 2.155
2-1/2 2.5000 3-7/8 3.875 3.750 4.474 4.275 2-29/64 2.505 2.401
2-3/4 2.7500 4-1/4 4.250 4.112 4.907 4.688 2-45/64 2.759 2.647
3 3.0000 4-5/8 4.625 4.475 5.340 5.102 2-61/64 3.013 2.893
3-1/4 3.2500 5 5.000 4.838 5.774 5.515 3-3/16 3.252 3.124
3-1/2 3.5000 5-3/8 5.375 5.200 6.207 5.928 3-7/16 3.506 3.370
3-3/4 3.7500 5-3/4 5.750 5.562 6.640 6.341 3-11/16 3.670 3.616
4 4.0000 6-1/8 6.125 5.925 7.073 6.755 3-15/16 4.014 3.862

Size Chart of A193 SS Nut

Nuts Sizes
(Millimeter)
Diameter*
(Millimeter)
Height
(Millimeter)
Hex Nuts Jam Nuts Nylock Nuts
2 4 1.6 1.2 -
3 5.5 2.4 1.8 4
2.5 5 2 1.6 -
4 7 3.2 2.2 5
6 10 5 3.2 6
5 8 4 2.7 5
7 11 5.5 3.5 -
10 17 8 5 10
12 19 10 6 12
8 13 6.5 4 8
14 22 11 7 14
18 27 15 9 18.5
20 30 16 10 20
16 24 13 8 16

Shear Strength of M8 Stainless Steel Fasteners

Fasteners METRIC SIZE A1/ A2/ A4-70 (N) A1/ A2/ A4-50 (N) A1/ A2/ A4-80 (N)
M3.5 4646 3390 5424
M3 3521 2515 4024
M5 9940 7100 11360
M4 6146 4390 7024
M7 20230 14450 23120
M6 14070 10050 16080
M10 40600 29000 46400
M8 25620 18300 29280
M14 80500 57500 92000
M12 59010 42150 67440
M18 134400 96000 153600
M39 683200 488000 780800
M16 109900 78500 125600
M22 212100 151500 242400
M20 171500 122500 196000
M27 321300 229500 367200
M24 247100 176500 282400
M33 571900 408500 653600
M30 392700 280500 448800
M36 571900 408500 653600

Finishes of SS Toggle Bolts

  • Hot Dipped Galvanized(HDG)
  • Plain Finish
  • Zinc and Chromate
  • Zinc and Yellow Chromate
  • Zinc Plated

Size Chart Stainless Steel Threaded Rod

Unified Inch Coarse and Fine Threads
SS Bolt Size Threads per Inch
Frac. [No.] Decimal UNC UNF
1/8 [#6] 0.1380 32 40
5/32 [#8] 0.1640 32 36
3/16 [#10] 0.1900 24 32
1/4 0.2500 20 28
5/16 0.3125 18 24
3/8 0.3750 16 24
7/16 0.4375 14 20
1/2 0.5000 13 20
9/16 0.5625 12 18
5/8 0.6250 11 18
3/4 0.7500 10 16
7/8 0.8750 9 14
1 1.0000 8 12, 14
1 1/8 1.1250 7 12
1 1/4 1.2500 7 12
1 3/8 1.3750 6 12
1 1/2 1.5000 6 12
1 3/4 1.7500 5 -

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