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Stainless Steel 316/316L Bolts are engineered fastening components designed for use in highly corrosive and demanding environments where standard stainless grades fail to perform. Manufactured from molybdenum-bearing austenitic stainless steel, these bolts offer superior resistance to chlorides, acids, and elevated temperatures, making them essential in marine, chemical processing, and offshore infrastructure applications.
These bolts are typically produced in compliance with international standards such as ASTM A193, DIN 933, ISO 4017, and BS EN specifications, ensuring compatibility across global projects. The inclusion of molybdenum enhances pitting and crevice corrosion resistance, particularly in saline or chemically aggressive conditions.
KK Fasteners supplies Stainless Steel 316/316L Bolts to industrial clients across multiple continents, with full traceability, grade certification, and adherence to global quality benchmarks. For procurement teams, these bolts represent a reliable solution where long-term durability and structural integrity are critical.
| Parameter | Specification |
|---|---|
| Material Grades | SS 316, SS 316L |
| Standards | ASTM A193 B8M, DIN 933, DIN 931, ISO 4014, ISO 4017, BS EN |
| Size Range | M3 to M64 / 1/8" to 2.5" |
| Length Range | 6 mm to 500 mm |
| Thread Types | Metric, UNC, UNF, BSW, BSF |
| Finish | Plain, Passivated, Polished, PTFE Coated |
| Types | Hex Bolts, Heavy Hex Bolts, Socket Head Bolts, Stud Bolts |
| Tensile Strength | 515–620 MPa |
| Yield Strength | 205 MPa (min for 316), 170 MPa (min for 316L) |
| Hardness | Max 95 HRB |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 316 – 316L | min. | – | – | – | – | – | 16.0 | 2.0 | 10.0 | – |
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.0 | 14.0 | 0.10 | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316 – 316L | 515 | 205 | 40 | 95 | 217 |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 316 – 316L | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
All measurements in millimeters
NOMINAL SIZE (D) |
BODY DIAMETER |
HEAD THICKNEASTM A193 |
ACROASTM A193 THE FLATS |
ACROASTM A193 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 |
Stainless Steel 316/316L Bolts are widely used in environments where corrosion resistance, strength, and reliability are critical to system performance.
Production of Stainless Steel 316/316L Bolts typically involves cold forging for dimensional consistency, followed by CNC machining for precise threading and finishing. Heat treatment processes are applied where required to achieve the desired mechanical properties.
Quality assurance includes dimensional inspection using calibrated gauges, tensile and hardness testing, and surface finish verification. Each batch undergoes material traceability checks aligned with ASTM and ISO requirements.
At KK Fasteners, inspection protocols include lot-wise documentation, third-party testing options, and compliance with ISO 9001 quality management systems, ensuring consistent product reliability across global shipments.
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Stainless Steel 316/316L bolts are high-performance fasteners made from molybdenum-alloyed austenitic stainless steel. They are specifically designed for use in corrosive environments such as marine, chemical, and industrial applications where resistance to pitting, rust, and chemical exposure is critical.
The main difference is carbon content. SS 316 contains higher carbon, offering slightly greater strength, while SS 316L has low carbon (below 0.03%), which prevents carbide precipitation during welding. This makes 316L more suitable for welded structures and corrosive environments.
Stainless Steel 316/316L bolts are manufactured according to international standards such as ASTM A193 B8M, DIN 933, ISO 4017, and BS EN. These standards ensure consistency in dimensions, mechanical strength, and material composition for global applications.
These bolts are widely used in marine engineering, chemical processing plants, oil and gas industries, water treatment facilities, and food processing equipment. Their corrosion resistance makes them ideal for environments exposed to moisture, salt, and chemicals.
Choose SS 316 when higher strength is required in non-welded applications. Opt for SS 316L when welding is involved or when the application demands enhanced resistance to intergranular corrosion, such as in chemical or pharmaceutical equipment.
For projects requiring consistent performance in corrosive and high-stress environments, Stainless Steel 316/316L Bolts offer a proven solution backed by global standards. KK Fasteners supports industrial buyers with documented quality, flexible customization, and export-ready logistics. Request a quote or connect with the engineering team to discuss your exact specification requirements.
