Sumit Impex is one of the leading manufacturers and suppliers of stainless steel fasteners that are created to match industry standards. Our production specialty products include bolts, nuts, screws, washers, and stud bolts produced from different grades, including SS 304, SS 316, SS 316L, and SS 321. These grades give the right amalgam between corrosion resistance, strength, and durability that helps to suit different applications. For example, SS 304 is good for ordinary usage, and SS 316 and SS 316L offer better performance in aggressive conditions. As will be seen, SS 321 is an ideal material for high-temperature services.
Sumit Impex is a Supplier of Stainless Steel Fasteners, Biggest Stockist of SS Fasteners as per Standards in Mumbai, India.
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Stainless steel fasteners are important elements in mechanical systems applied in different industries because of their strength and resistance to corrosive environments. With the material of metal alloy steel, the fasteners are designed for durable and rigid conditions, thus useful in the aerospace industry, the automobile, construction, and marine industries, among others. Despite their hostile environment, they do not corrode easily, thereby extending the time it will take before you have to replace them. Austain stainless steel fasteners are available in many types, such as bolts, nuts, screws, washers, and stud bolts, the use of which depends on the need that is required.
Our manufacturing processes employ advanced techniques like cold forging, hot forging, and precision machining to ensure each fastener meets the highest standards. We adhere to various international standards, including ASTM (American Society for Testing and Materials), ASME (American Society of Mechanical Engineers), DIN (Deutsches Institut für Normung), and EN (European Norms), to ensure our products meet rigorous quality and performance criteria.
For quality assurance purposes, all our products are tested in our well-equipped laboratory. Some of the testing methods are tensile testing, which determines the strength of the material, impact testing for the ability to manage high-rate loads; and hardness testing. We also do intergranular corrosion testing, generally known as IGC testing, to determine the degree of corrosion resistance in the material and positive material identification testing to determine the actual composition of the tested material.
As a prominent manufacturer and supplier, we serve a wide range of industries, including aerospace, automotive, lighting, and electrical. We provide high-tensile SS fasteners, Monel 400, Inconel 625, Duplex 2205, and 904L Stainless Steel Fasteners, available in various sizes, shapes, and materials. Our products are offered with surface finishing options such as bright annealed painting, powder coating, anodising, and custom painting to enhance performance and appearance.
As of the most recent information available in India, the price for stainless steel fasteners ranges from ₹200 to ₹350 per kg, depending on the stainless steel fastener grades and specifications. At Sumit Impex, we are committed to offering competitive pricing while ensuring exceptional quality and reliability, providing fasteners that deliver outstanding value and performance.

Standard Specification For Stainless Steel Fastener
Specifications | ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
Fasteners size | Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Machine Screws Size : M1.6 – M12 Self Tapping Screw Size : No.2 – No. 14 |
Fasteners Length | 3 mm to 200 mm |
Fastener Threads | UNF, BSW, BSF, METRIC, UNC or as required |
Standard of Stainless Steel Fasteners | DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard SS Stud Bolt length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 SS Hex nuts |
Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
Surface Coating | Ptfe Coated Stainless Steel Fasteners Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating |
Fasteners Finishing | Stainless steel : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Stainless Steel, Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel Zinc (blue, black, yellow, white), black oxide. |
Metric SS FastenersSS Fasteners Type Socket Head Cap Screw SS Fasteners SIZE M3 to M30 PROPERTY CLASS A2 – 70/80, A4 – 70/80 SS Fasteners Standard DIN 912 / ISO 4762 SS Fasteners Type Hex Head Screw (Full Thread) SS Fasteners SIZE M3 to M30 PROPERTY CLASS A2 – 70/80, A4 – 70/80 SS Fasteners Standard DIN 933 / ISO 4017 SS Fasteners Type Hex Head Bolt (Partial Thread) SS Fasteners SIZE M4 to M30 PROPERTY CLASS A2 – 70/80, A4 – 70/80 SS Fasteners Standard DIN 931 / ISO 4014 SS Fasteners Type Hex Nut SS Fasteners SIZE M3 to M30 PROPERTY CLASS A2 – 70/80, A4 – 70/80 SS Fasteners Standard DIN 934 / ISO 4032 SS Fasteners Type Plain Washer SS Fasteners SIZE M3 to M64 PROPERTY CLASS A2, A4 SS Fasteners Standard DIN 125 A SS Fasteners Type Flat – Section Spring Washer SS Fasteners SIZE M3 to M36 PROPERTY CLASS A2, A4 SS Fasteners Standard DIN 127 B SS Fasteners Type Square – Section Spring Washer SS Fasteners SIZE M3 to M36 PROPERTY CLASS A2, A4 SS Fasteners Standard DIN 7980 SS Fasteners Type Threaded Rod SS Fasteners SIZE M3 to M36 PROPERTY CLASS A2 – 70/80, A4 – 70/80 SS Fasteners Standard DIN 975
SS Fasteners Metric Conversion Table
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
Stainless Steel Fasteners Types
Stud Bolts
Stud Bolts
Bolts
Bolts
Nuts
Nuts
Washers
Washers
Contact Us For Quatation & Questions Related To Stainless Steel Fasteners
Stainless Steel Fasteners Applications
Export & Supply Destinations Of SS Fasteners
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.
Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.
Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America.
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.
SS Fasteners Type | Socket Head Cap Screw |
SS Fasteners SIZE | M3 to M30 |
PROPERTY CLASS | A2 – 70/80, A4 – 70/80 |
SS Fasteners Standard | DIN 912 / ISO 4762 |
SS Fasteners Type | Hex Head Screw (Full Thread) |
SS Fasteners SIZE | M3 to M30 |
PROPERTY CLASS | A2 – 70/80, A4 – 70/80 |
SS Fasteners Standard | DIN 933 / ISO 4017 |
SS Fasteners Type | Hex Head Bolt (Partial Thread) |
SS Fasteners SIZE | M4 to M30 |
PROPERTY CLASS | A2 – 70/80, A4 – 70/80 |
SS Fasteners Standard | DIN 931 / ISO 4014 |
SS Fasteners Type | Hex Nut |
SS Fasteners SIZE | M3 to M30 |
PROPERTY CLASS | A2 – 70/80, A4 – 70/80 |
SS Fasteners Standard | DIN 934 / ISO 4032 |
SS Fasteners Type | Plain Washer |
SS Fasteners SIZE | M3 to M64 |
PROPERTY CLASS | A2, A4 |
SS Fasteners Standard | DIN 125 A |
SS Fasteners Type | Flat – Section Spring Washer |
SS Fasteners SIZE | M3 to M36 |
PROPERTY CLASS | A2, A4 |
SS Fasteners Standard | DIN 127 B |
SS Fasteners Type | Square – Section Spring Washer |
SS Fasteners SIZE | M3 to M36 |
PROPERTY CLASS | A2, A4 |
SS Fasteners Standard | DIN 7980 |
SS Fasteners Type | Threaded Rod |
SS Fasteners SIZE | M3 to M36 |
PROPERTY CLASS | A2 – 70/80, A4 – 70/80 |
SS Fasteners Standard | DIN 975 |
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 |
Stainless Steel Fasteners Types
Stud Bolts
Stud Bolts
Bolts
Bolts
Nuts
Nuts
Washers
Washers
Contact Us For Quatation & Questions Related To Stainless Steel Fasteners
Stainless Steel Fasteners Applications
Export & Supply Destinations Of SS Fasteners
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.
Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.
Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America.
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.