High-Performance Stainless Steel Fasteners Overview
Our stainless steel fasteners are manufactured using precision cold forging, hot forging, and CNC machining processes. Designed in strict compliance with international standards such as ASTM A193, ASTM A194, ASTM F593, ASTM F594, ASME B18.2.1, ASME B18.2.2, and DIN 933/931/934, our fasteners guarantee complete reliability in critical bolting applications.
We stock and process a comprehensive portfolio of austenitic, martensitic, ferritic, and precipitation-hardening stainless steel grades including AISI 304, 304L, 316, 316L, 317L, 321, 347, 310S, and ASTM A193 Grade B8 / B8M (Class 1 and Class 2 strain hardened).
Comprehensive Stainless Steel Fastener Product Portfolio
Stainless Steel Nuts
Stainless Steel Bolts
Stainless Steel Screws
Stainless Steel Washers
SS Stud Bolts
SS Threaded Rods
Technical Specifications & Standard Dimensions
| Specification Parameter | Manufacturing Details & Standards |
|---|---|
| Standard Specifications | ASTM A193 / SA193, ASTM A194 / SA194, ASTM F593, ASTM F594, ASTM A320 |
| Dimensional Standards | ASME B18.2.1, ASME B18.2.2, ASME B18.31.2, DIN 931, DIN 933, DIN 934, DIN 975, ISO 4014, ISO 4017 |
| Size Range | M2 to M160 | 1/8" to 6" Nominal Diameter | Cut-to-length as per drawings |
| Thread Configurations | Metric (Coarse/Fine), UNC, UNF, UNEF, BSW, BSF, Acme, and Trapezoidal threads |
| Surface Finish Options | Plain passivated, electro-polished, PTFE/Xylan coated, Hot-Dip Galvanized (HDG), Cadmium plated |
| Quality Certification | EN 10204 3.1 Material Test Certificate, PMI Test Report, Microstructure Analysis, NDT Inspection |
Stainless Steel Mechanical Properties
| Material Grade | Tensile Strength (MPa) | Yield Strength 0.2% Offset (MPa) | Elongation (%) | Density (g/cm³) | Hardness (Rockwell B) |
|---|---|---|---|---|---|
| SS 202 | 515 Min | 275 Min | 40 Min | 7.86 | HRB 95 Max |
| SS 304 / 304L | 515 Min | 205 Min | 40 Min | 8.00 | HRB 92 Max |
| SS 316 / 316L | 515 Min | 205 Min | 40 Min | 8.00 | HRB 95 Max |
| SS 317L | 520 Min | 220 Min | 35 Min | 8.00 | HRB 95 Max |
| SS 321 | 515 Min | 205 Min | 40 Min | 7.92 | HRB 95 Max |
| SS 347 / 347H | 515 Min | 205 Min | 40 Min | 7.96 | HRB 92 Max |
| SS 310S | 515 Min | 205 Min | 40 Min | 7.98 | HRB 95 Max |
Chemical Composition Matrix (%)
| Grade | C (Max) | Mn (Max) | Si (Max) | Cr | Ni | Mo | Other Elements |
|---|---|---|---|---|---|---|---|
| SS 304 | 0.07 | 2.00 | 0.75 | 17.5 - 19.5 | 8.0 - 10.5 | - | N: 0.10 Max |
| SS 316 | 0.08 | 2.00 | 0.75 | 16.0 - 18.0 | 10.0 - 14.0 | 2.00 - 3.00 | S: 0.030 Max |
| SS 316L | 0.03 | 2.00 | 0.75 | 16.0 - 18.0 | 10.0 - 14.0 | 2.00 - 3.00 | N: 0.10 Max |
| SS 317L | 0.035 | 2.00 | 0.75 | 18.0 - 20.0 | 11.0 - 15.0 | 3.00 - 4.00 | P: 0.045 Max |
| SS 321 | 0.08 | 2.00 | 0.75 | 17.0 - 19.0 | 9.0 - 12.0 | - | Ti: 5x(C+N) Min - 0.70 Max |
| SS 347H | 0.04 - 0.10 | 2.00 | 0.75 | 17.0 - 19.0 | 9.0 - 13.0 | - | Nb/Ta: 8x(C) Min - 1.10 Max |
| SS 310S | 0.08 | 2.00 | 1.50 | 24.0 - 26.0 | 19.0 - 22.0 | 0.75 Max | High Thermal Oxidation Resistance |
Quality Assurance & Export Packaging Standard
At Stud Bolt India, every production batch undergoes rigorous Quality Control (QC) protocols prior to dispatch. Material testing includes Positive Material Identification (PMI), Tensile Testing, Proof Load Testing, Hardness Testing, Intergranular Corrosion (IGC) Testing, and Microstructure Examination.
Export orders are securely packaged using seaworthy wooden cases, shrink wrapping, bubble protection, and protective plastic thread caps to prevent physical damage, thread distortion, and atmospheric corrosion during transit.
Global Export Destinations
We regularly export high-grade stainless steel fasteners to major industrial hubs across the globe including UAE, Saudi Arabia, Oman, Qatar, Kuwait, Singapore, Malaysia, Germany, United Kingdom, Netherlands, Poland, Sweden, United States, Canada, Australia, and South Africa.