What are the six advantages of SS fasteners?

The most commonly used material for industrial-grade fasteners is stainless steel, well-admired for its performance and rust resistance. Stainless steel fasteners work in numerous sectors – from construction and chemical processing to general engineering.

  • Super corrosion resistance because of a chromium oxide layer
  • Facilitates self-repair and cleaning in case of damage
  • Durable and low-maintenance
  • Easily available within affordable rates
  • Eco-friendly/recyclable, aesthetic
  • They weather high temperatures and challenging atmospheric conditions without encountering deformation

Authentic and cost-effective SS bolts and nuts supplier in Mumbai at lowest price

Stainless Steel fasteners manufacturer in India

Do stainless steel screws require special tools or equipment for installation?

A distinct advantage of these fasteners is their easy and quick installation. Stainless steel screws don’t need complex tools or equipment. The standard tools are an angle grinder (high-speed). You may also require a suitable cutting disc. Plus, stock up on markers to label torque measurements.

We recommend lubricating the threads before assembly to lower the chance of galling. Sandpaper can smooth the edges. Note that wearing protective gear like gloves and glasses is also a vital safety requirement.

We are genuine stainless steel hex bolts and studs stockists, if you want latest ss nut bolt price list, call now !!

Stainless steel fasteners

Stainless steel fasteners

SS screws

SS screws

Stainless steel bolts

Stainless steel bolts

What are the characteristics of ACME threads and when are they used in Stainless steel hex bolts?

ACME threads (American Corps of Mechanical Engineering) get preferred for stainless steel hex bolts. Their distinguishing characteristic is a 29-degree angle – a cross between square and V designs. It shows enhanced strength and longer functional life. These threads work in stainless steel bolts and nuts for manufacturing equipment and power systems. These threads display accuracy and manage heavy loads.

Get ready stock of stainless steel threaded rod and screws ranging from 3/6″ to 2″ in diameter as per A193/ 193M standards

Table of Content

Stainless Steel fasteners specifications

Stainless Steel fasteners specifications

SS Bolts Size Specifications Diameter Length
M2 – M100 ASTM/ ASME : A193/ SA193 0.25 to 1.50 inch 3 to 200 MM
Grades SS Bolts Coating SS Bolts Head Drive Origin
304, 304L, 316, 316L, 310, 317L, 321, 410, 904L PTFE, zinc plated, black phosphate, hot dip galvanized Phillips/Slot, Phillips, Slotted, Six-Lobe
  • Korea
  • South America
  • Japan
  • East Europe
Temperature range Application Testing SS Bolts Thread
up to 1100°F
  • Power Plant
  • Oil and Gas
  • Energy
  • Aerospace
  • Pulp & Paper Indusry
  • Food Processing
  • Petrochemical
  • Chemical
  • Refining
  • Pharmaceuticals
  • IGC Test
  • Identification Test
  • Positive Material
  • Tensile Testing
  • Impact Testing
  • IGC Test
 BSW, METRIC, UNF, UNC, BSF, custom
If you need SS U bolts and washers used for automotive, construction, mining, engineering and heavy metal industries, please get in touch with us
Types of SS fasteners

Stainless steel hex bolts

Stainless steel hex bolts

  • Sizes: M2 – M100
  • Length: 3 to 200 MM

SS studs

SS studs

  • End : sheared, flat or saw cut, rounded (oval), chamfered,
  • Tensile strength: 75 ksi

Stainless steel wood screws

Stainless steel wood screws

  • Diameter: 0.25 to 1.50 inch
  • ASTM/ ASME : A193/ SA193

SS threaded rod

SS threaded rod

  • Condition: Cold Drawn, Threading
  • Grades: 304, 304L, 316, 316L, 310, 317L, 321, 410, 904L

Stainless steel bolts and nuts

Stainless steel bolts and nuts

  • Coatings: zinc plating, hot dip galvanising, PTFE
  • Yield strength: 30 ksi

SS u bolts

SS u bolts

  • Temperature range: Up to 1100°F
  • Thread type : Metric, Metric course, UNF, BA, BSF, UNC, UN8, BSW
Get high quality stainless steel anchor bolts and heavy hex bolts that offer a high-quality surface finish and resistance to corrosion
SS threaded rod chemical composition
SS threaded rod grade Mn C P Si S Cr Ni Mo N
304 2.0 0.08 0.045 0.75 0.030 18.0-20.0 8.0-10.5 – 0.10
304L 2.0 0.030 0.045 0.75 0.030 18.0-20.0 8.0-12.0 – 0.10
304H 2.0 0.04-0.10 0.045 0.75 0.030 18.0-20.0 8.0-10.5 – –
310 2 0.015 0.020 0.15 0.015 24.00 – 26.00 19.00 – 21.00 0.10 54.7 min
310S 2 0.08 0.045 1.0 0.030 24.00 – 26.00 19.00 – 21.00 0.75 53.095 min
316 2.0 0.08 0.045 1.0 0.030 16.00 – 18.00 11.00 – 14.00 2.00 – 3.00 67.845 min
316L 2.0 0.035 0.045 1.0 0.030 16.00 – 18.00 10.00 – 14.00 2.00 – 3.00 68.89 min
316H 0.10 0.10 0.045 0.75 0.030 16.00 – 18.00 10.00 – 14.00 2.00 – 3.00 –
SS 317 2.0 0.08 0.045 1.0 0.030 18.00 – 20.00 11.00 – 15.00 3.00 – 4.00 57.845 min
SS 317L 2.0 0.035 0.045 1.0 0.030 18.00 – 20.00 11.00 – 15.00 3.00 – 4.00 57.89 min
SS 321 2.0 0.08 0.045 1.0 0.030 17.00 – 19.00 5(C+N) – 0.70 – 9.00 – 12.00
SS 321H 2.0 0.04 – 0.10 0.045 1.0 0.030 17.00 – 19.00 9.00 – 12.00 – 0.10
SS 347 2.0 0.08 0.045 1.0 0.030 17.00 – 20.00 9.00 – 13.00 – –
SS 347H 2.0 0.04 – 0.10 0.045 1.0 0.030 17.00 – 19.00 9.0 -13.0 – –
SS 409 1.00 0.08 0.045 1.00 0.030 10.5 – 11.75 0.5 – –
SS 410S 1.00 0.080 0.040 1.00 0.030 10.5 – 12.5 – – –
SS 904L 2.00 0.020 0.040 1.00 0.030 19.00 – 23.00 23.00 – 28.00 4.00 – 5.00 –
Stainless steel bolts mechanical properties
SS Bolts Grade Melting Point Density Tensile Strength Elongation Yield Strength (0.2%Offset)
304/304H/304L 1400 °C (2550 °F) 8.0 gram/cm3 Psi 75000 , MPa 515 35 % Psi 30000 , MPa 205
310/310S 1402 °C (2555 °F) 7.9 gram/cm3 Psi 75000 , MPa 515 40 % Psi 30000 , MPa 205
316/316L/316H 1400 °C (2550 °F) 8.0 gram/cm3 Psi 75000 , MPa 515 35 % Psi 30000 , MPa 205
317/ 317L 1400 °C (2550 °F) 7.9 gram/cm3 Psi 75000 , MPa 515 35 % Psi 30000 , MPa 205
321/ 321H 1457 °C (2650 °F) 8.0 gram/cm3 Psi 75000 , MPa 515 40 % Psi 30000 , MPa 205
347/ 347H 1454 °C (2650 °F) 8.0 gram/cm3 Psi 75000 , MPa 515 35 % Psi 30000 , MPa 205
410S 1532°C (2790°F) 7.80 gram/cm3 Psi 75000 , MPa 515 25 % Psi 30000 , MPa 205
904L 1350 °C (2460 °F) 7.95 gram/cm3 Psi 71000 , MPa 490 35 % Psi 32000 , MPa 220
SS u bolts equivalent grades
STANDARD UNS WERKSTOFF NR. JIS GOST BS EN AFNOR
SS 304 S30400 1.4301 SUS 304 08Х18Н10 304S31 X5CrNi1810 Z7CN18‐09
SS 304L S30403 1.4306 / 1.4307 SUS 304L 03Х18Н11 3304S11 X2CrNi189 / X2CrNi1911 Z3CN18‐10
SS 304H S30409 1.4301
SS 310 S31000 1.4841 SUS 310 20Ch25N20S2 310S24 X15CrNi2520
SS 310S S31008 1.4845 SUS 310S 20Ch23N18 310S16 X8CrNi2521
SS 316 S31600 1.4401 / 1.4436 SUS 316 316S31 / 316S33 X5CrNiMo17122 /
X3CrNiMo17133		 Z7CND17‐11‐02
SS 316L S31603 1.4404 / 1.4435 SUS 316L 03Ch17N14M3 / 03Ch17N14M2 316S11 / 316S13 X2CrNiMo17122 /
X2CrNiMo18143		 Z3CND17‐11‐02 / Z3CND18‐14‐03
SS 316H S31609 316S51
SS 317 S31700 1.4449 SUS 317 X5CrNiMo1713
SS 317L S31703 1.4438 SUS 317L X2CrNiMo18154
SS 321 S32100 1.4541 SUS 321 X6CrNiTi1810
SS 321H S32109 1.4878 SUS 321H X12CrNiTi189
SS 347 S34700 1.4550 SUS 347 X6CrNiNb1810
SS 347H S34709 1.4961 SUS 347H X6CrNiNb1812
SS 409 S40900 1.4512 SUS409 X2CrTi12
SS 410S S41008 1.4516 SUS410S X6CrNiTi12
SS 904L N08904 1.4539 SUS 904L STS 317J5L 904S13 X1NiCrMoCu25205 Z2 NCDU 2520
Torque chart of Stainless steel nut bolt
SS Nut Bolt Thread Sizes Coeff Friction Tightening Torque (Nm) Property class Preload (Kn) Property class Minimum Breaking Torque
A1-50 A2-70 A4-80 A1-50 A2-70 A4-80 A1-50 A2-70 A4-80
M3.0 0.1 0.85 1 1.3 0.9 1 1 1.1 1.6 1.8
0.2 1 1.1 1.6 0.6 0.65 0.65
0.3 1.25 1.35 1.85 0.4 0.45 0.45
M4.0 0.1 0.8 1.7 2.3 1.08 2.97 2.97 2.7 3.8 4.3
0.2 1.3 2.6 3.5 1.12 2.4 2.4
0.3 1.5 3 4.1 0.9 1.94 1.94
M5.0 0.1 1.6 3.4 4.6 2.26 4.85 4.85 5.5 7.8 8.8
0.2 2.4 5.1 6.9 1.83 3.93 3.93
0.3 2.8 6.1 8 1.49 3.19 3.19
M1.6 0.1 0.1 0.1 0.2 0.4 0.55 0.55 0.15 0.2 0.24
0.2 0.1 0.2 0.35 0.3 0.35 0.35
0.3 0.2 0.25 0.45 0.2 0.3 0.3
M2.0 0.1 0.15 0.2 0.3 0.5 0.6 0.6 0.3 0.4 0.48
0.2 0.25 0.3 0.4 0.4 0.5 0.5
0.3 0.4 0.4 0.55 0.25 0.36 0.36
M2.5 0.1 0.25 0.45 0.6 0.65 0.9 0.9 0.6 0.9 0.96
0.2 0.45 0.6 0.65 0.4 0.5 0.5
0.3 0.6 0.75 0.8 0.3 0.3 0.3
M6.0 0.1 2.8 5.9 8 3.2 6.85 6.85 9.3 13 15
0.2 4.1 8.8 11.8 2.59 5.54 5.54
0.3 4.8 10.4 13.9 2.09 4.49 4.49
M8.0 0.1 6.8 14.5 19.3 5.86 12.6 12.6 23 32 37
0.2 10.1 21.4 28.7 4.75 10.2 10.2
0.3 11.9 25.5 33.9 3.85 8.85 8.85
M10.0 0.1 13.7 30 39.4 9.32 20 20 46 65 74
0.2 20.3 44 58 7.58 16.2 16.2
0.3 24 51 69 6.14 13.1 13.1
M12.0 0.1 23.6 50 67 13.6 29.1 29.1 80 110 130
0.2 34.8 74 100 11.1 23.7 23.7
0.3 41 88 117 9 19.2 19.2
M14.0 0.1 37.1 79 106 18.7 40 40 210 290 330
0.2 56 119 159 15.2 32.6 32.6
0.3 66 141 188 12.3 26.4 26.4
M24.0 0.1 187 400 534 58 142 142
0.2 284 608 810 47 101 101
0.3 338 724 966 39 83 83
M27.0 0.1 275 75
0.2 421 61
0.3 503 50
M33.0 0.1 374 91
0.2 571 75
0.3 680 61
M36.0 0.1 506 114
0.2 779 94
0.3 929 76
M.16.0 0.1 56 121 161 25.7 55 55
0.2 86 183 245 20.9 44.9 44.9
0.3 102 218 291 17 36.4 36.4
M18.0 0.1 81 174 232 32.2 69 69
0.2 122 260 346 26.2 56.2 56.2
0.3 144 380 411 21.1 45.5 45.5
M20.0 0.1 114 224 325 41.3 88.6 88.6
0.2 173 370 494 33.8 72.4 72.4
0.3 205 439 586 27.4 58.7 58.7
M22.0 0.1 148 318 424 50 107 107
0.2 227 488 650 41 88 88
0.3 272 582 776 34 72 72
M39.0 0.1 651 135
0.2 998 110
0.3 1189 89
0.1 842 162
0.2 1300 133
0.3 1553 108
Grades of SS fasteners
SS Fasteners Composition Class Minimum Tensile Strength in MPa Grades
C Martensitic fasteners 50 500 (soft) 1 410
70 700 (hardened and tempered) 4 416,416Se
110 1100 (hardened and tempered) (ASTM metric only)
80 800 (hardened and tempered) 3 431
120 1200 (hardened and tempered) (ASTM metric only)
A Austenitic fasteners 50 500 (soft) 1 18-8
70 700 (cold-worked) 2 18-8
80 800 (high strength) 4 316
F Ferritic fasteners 45 450 (soft) 1 430
60 600 (cold-worked)
P Precipitation-Hardening (ASTM metric only) 90 900 1 630 (17/4)
Dimensions of SS bolts
D1D1 E K S
M8 14.38 5.3 13
M10 18.9 6.4 17
M20 33.53 12.5 30
M22 35.72 14 32
M24 39.98 15 36
M27 45.2 17 41
M12 21.1 7.5 19
M14 24.49 8.8 22
M3 6.01 2 5.5
M4 7.66 2.8 7
M5 8.79 3.5 8
M6 11.05 4 10
M16 26.75 10 24
M18 30.14 11.5 27
M30 50.85 18.7 46
M33 55.37 21 50
M36 60.79 22.5 55
M42 71.3 26 65
M48 82.6 30 75
Stainless steel nut bolt sizes in metric
PRODUCT PROPERTY CLASS SIZE STANDARD
Hex Head Screw (Full Thread) A2 – 70/80, A4 – 70/80 M3 to M30 DIN 933 / ISO 4017
SS Socket Head Cap Screw A2 – 70/80, A4 – 70/80 M3 to M30 DIN 912 / ISO 4762
Hex Head Bolt (Partial Thread) A2 – 70/80, A4 – 70/80 M4 to M30 DIN 931 / ISO 4014
Plain Washer A2, A4 M3 to M64 DIN 125 A
SS Hex Nut A2 – 70/80, A4 – 70/80 M3 to M30 DIN 934 / ISO 4032
Square – Section Spring Washer A2, A4 M3 to M36 DIN 7980
Flat – Section Spring Washer A2, A4 M3 to M36 DIN 127 B
SS Threaded Rod A2 – 70/80, A4 – 70/80 M3 to M36 DIN 975
Stainless fasteners sizes in inch
PRODUCT GRADE SIZE STANDARD
Plain Washer 316, 304 1/4 – 1 ANSI B18.21.1
SS Hex Head Bolt / Screw F593D, F593C & F593H, F593G 1/4 – 1 ASTM F593/ASME B18.2.1
Socket Head Cap Screw F837B & F837E 3/16 – 1 F837/ASME B18.3
316, 304 Hex Nut F594D, F594C & F594H, F594G 1/4 – 1 1/2 F594/ASME B18.2.2
US to metric conversion table of SS screw
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
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
11/16 17 3-1/2 89
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 25 5-1/2 140
1-1/8 29 6 152
1-1/4 32 6-1/2 165
1-3/8 35 7 178
SS nut size chart
Diameter*
(mm)		 Nuts Size
(mm)		 Height
(mm)
Jam Nuts Hex Nuts Nylock Nuts
5.5 3 1.8 2.4 4
4 2 1.2 1.6 –
7 4 2.2 3.2 5
5 2.5 1.6 2 –
8 5 2.7 4 5
30 20 10 16 20
11 7 3.5 5.5 –
10 6 3.2 5 6
13 8 4 6.5 8
19 12 6 10 12
17 10 5 8 10
24 16 8 13 16
22 14 7 11 14
27 18 9 15 18.5
Stainless steel flat washer dimensions

Stainless steel flat washer dimensions

D d2 d1 h
M1 3.0000 1.1000 0.3000
M1.2 3.5000 1.3000 0.3000
M1.4 4.0000 1.5000 0.3000
M1.6 4.0000 1.7000 0.3000
M1.7 4.5000 1.8000 0.3000
M2 5.0000 2.2000 0.3000
M2.3 6.0000 2.5000 0.5000
M2.5 6.0000 2.7000 0.5000
M2.6 7.0000 2.8000 0.5000
M3 7.0000 3.2000 0.5000
M3.5 8.0000 3.7000 0.5000
M4 9.0000 4.3000 0.8000
M5 10.0000 5.3000 1.0000
M6 12.0000 6.4000 1.6000
M7 14.0000 7.4000 1.6000
M8 16.0000 8.4000 1.6000
M10 20.0000 10.5000 2.0000
M12 24.0000 13.0000 2.5000
M14 28.0000 15.0000 2.5000
M16 30.0000 17.0000 3.0000
M18 34.0000 19.0000 3.0000
M20 37.0000 21.0000 3.0000
M22 39.0000 23.0000 3.0000
M24 44.0000 25.0000 4.0000
M27 50.0000 28.0000 4.0000
M30 56.0000 31.0000 4.0000
M33 60.0000 34.0000 5.0000
M36 6.0000 37.0000 5.0000
M39 72.0000 40.0000 6.0000
M42 78.0000 43.0000 7.0000
M45 85.0000 46.0000 7.0000
M48 92.0000 50.0000 8.0000
M52 98.0000 54.0000 8.0000
M55 105.0000 57.0000 9.0000
M56 105.0000 58.0000 9.0000
M58 110.0000 60.0000 9.0000
M60 110.0000 62.0000 9.0000
M64 115.0000 66.0000 9.0000
M68 120.0000 70.0000 10.0000
M72 125.0000 74.0000 10.0000
M76 135.0000 78.0000 10.0000
M80 140.0000 82.0000 12.0000
M85 145.0000 87.0000 12.0000
M90 160.0000 93.0000 12.0000
M95 165.0000 98.0000 12.0000
M100 175.0000 104.0000 14.0000
M105 180.0000 109.0000 14.0000
M110 185.0000 114.0000 14.0000
M115 200.0000 119.0000 14.0000
M120 210.0000 124.0000 16.0000
M125 220.0000 129.0000 16.0000
M130 230.0000 134.0000 16.0000
M135 230.0000 139.0000 16.0000
M140 240.0000 144.0000 18.0000
M145 250.0000 149.0000 18.0000
M150 250.0000 155.0000 18.0000
M160 250.0000 165.0000 18.0000
Weight Chart Of SS hex Bolts
MILIMETER THREADS AS PER IS 1363/67
APPROX. WEIGHT IN KILOGRAMS
LENGTH in DIA
M 5 M 6 M 8 M 10 M 12 M 14 M 16 M 18 M 20 M 22
16 0.448 0.743 1.590 3.211
20 0.598 0.812 1.711 3.411 4.892
25 0.660 0.897 1.871 3.660 5.252 8.170
30 0.737 1.010 2.070 3.912 5.574 9.690 10.707 18.657
35 0.804 1.120 2.271 4.223 5.974 10.000 11.416 16.026 19.608
40 0.881 1.230 2.470 4.533 6.410 10.288 12.107 16.667 20.747
45 0.958 1.340 2.671 4.840 6.859 10.504 12.821 17.241 21.739
50 1.030 1.450 2.870 5.155 7.299 11.261 13.624 17.857 22.727 28.409
55 1.560 3.071 5.464 7.740 11.628 14.409 18.868 23.810 30.120
60 1.670 3.270 5.774 8.183 12.255 15.244 20.000 25.126 32.051
65 1.781 3.472 6.083 8.621 12.626 16.026 21.008 26.455 34.014
70 1.890 3.671 6.394 9.058 12.987 16.835 22.124 27.778 35.461
75 2.000 3.873 6.702 9.506 13.228 17.606 23.256 29.070 39.063
80 2.111 4.072 7.013 10.000 13.889 18.248 24.510 30.303 40.000
90 4.472 7.634 10.917 14.925 19.841 26.042 33.113 41.667
100 4.873 8.251 11.820 16.340 21.459 27.778 35.714 46.296
110 8.881 12.723 17.730 23.041 31.250 38.168 47.170
120 9.506 13.624 18.797 24.631 32.895 40.984 50.000
130 10.101 14.535 20.000 26.316 34.722 43.478 52.632
140 10.707 15.432 20.833 27.933 35.461 46.296 55.556
150 11.312 16.340 22.222 29.412 37.594 48.544 58.824
160 11.905 17.241 24.272 31.056 40.984 50.505 61.728
170 12.500 18.116 32.680 53.191 64.935
180 13.123 19.011 26.882 34.247 55.556 67.568
190 13.736 19.920 35.971 58.140 70.423
200 14.327 20.833 29.586 37.594 49.020 60.976 73.529
220 15.528 22.624 40.650 65.789 79.365
240 16.722 24.510 43.860 71.429 84.746
250 17.301 25.381 45.455 74.627 87.719
260 17.921 26.316 47.170 76.923 90.909
280 19.157 28.090 50.505 81.967 98.039
300 20.325 29.940 53.763 87.719 104.167
320 31.646 56.818 92.593
340 33.557 60.241 98.039
360 35.211 63.291 104.167
380 37.037 66.667 108.696
400 39.063 69.444 113.636
How do I measure the pitch of Stainless steel bolts?

It is salient to choose the correct pitch to maintain application integrity. The thread pitch of stainless steel bolts refers to the distance between threads and gets stated in millimetres. You can measure it along the length of the bolt by counting the number of threads.
While ordering stainless steel U bolts, buyers must specify the dimensions in TPI (threads per inch).

Are Stainless steel self tapping screws suitable for securing heavy machinery or equipment?

These screws can hold around 80 to 100 pounds. Consequently, stainless steel self tapping screws are unsuitable for heavy-duty applications. They also lead to stripped threads when removed and don’t handle vibration as effectively as rivets.

Buyers procure stainless steel wood screws in either thread-forming or cutting designs for lower-criticality roles. The angle of insertion, lengths, and forces on the screw also factor in.

How do I maintain the corrosion protection of coated SS threaded rod over time?

The right coating prolongs the life of the fasteners and keeps your applications productive. A stainless steel threaded rod has threading on both ends to give a durable and leak-proof connection. It already possesses medium to good corrosion resistance due to chromium and molybdenum. (Some grades include copper and tungsten too.)

Manufacturers use galvanisation (zinc coating) to enhance these properties. An SS screwor rod does not need frequent maintenance. But clients should conduct periodic inspections, cleaning, and repair to extend the service life.Removing contaminants like salt and rainwater is crucial. Another approach is conducting electro-polishing or passivating.

Are Stainless Steel fasteners manufacturer will provide demostration for installation?

The correct installation procedure for stainless steel studs and other fasteners must be followed for application safety. While this process is straightforward and does not need special tools, expert technicians guarantee streamlined, safe, and durable installation.

Some manufacturers have in-house teams to assist buyers with installation requirements. Clients can report any compliance issues or manufacturing defects encountered during installation to receive a replacement.

FAQ
How are ss fasteners made?

Machining and cold heading (cold forming) are the two methods used for making stainless steel fasteners.

Why is stainless steel mostly used for fasteners?

They are strong and able to withstand adverse corrosive environments

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