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GIC Fasteners, a leading manufacturer in the industry, proudly presents its range of Stainless Steel 317/317L Screws. These screws, meticulously crafted to meet the highest quality standards, adhere to a variety of international specifications, including DIN, ASTM, ISO, and BS standards, among others. Renowned for their exceptional corrosion resistance and durability, our Stainless Steel 317/317L Screws are engineered to excel in the most demanding applications. Trust GIC Fasteners to provide you with the precision and reliability you need in every fastening solution. Whether it's for chemical processing, marine environments, or any other challenging setting, our screws ensure your projects remain steadfast and resilient.
When it comes to fasteners that can withstand the most demanding environments, look no further than Stainless Steel 317/317L Screws from GIC Fasteners. Our decades of expertise in crafting precision-engineered stainless steel fasteners have solidified our reputation as industry experts. These screws are designed to offer unparalleled durability and resistance to corrosion, making them the preferred choice across various applications.
Stainless Steel 317/317L is a low-carbon, high-alloy steel renowned for its exceptional resistance to corrosive agents, including acids and chemicals. Whether you’re working in chemical processing plants, marine environments, or any industry where corrosion poses a challenge, our screws are your reliable solution. At GIC Fasteners, we prioritize quality and precision in every product we manufacture. Trust us to provide the Stainless Steel 317/317L Screws you need to ensure the longevity and integrity of your projects. For inquiries or to request a quote, simply reach out to our experts at
| Specifications | : | ASTM A 193 / ASME SA 193 |
| Standard | : | DIN, ASTM, BS, ISO and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Screw, Socket Head Cap Screw, Cheese Head Screws, Anchor Screw, Button Head Screws, Concrete screw, Threaded Screw, Pan Head Screw, Panel Screw, Machine Screw. |
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
321/321H |
min.
max. |
-
0.080 |
-
2 |
-
1 |
-
0.045 |
-
0.030 |
-
19 |
-
- |
-
13 |
-
- |
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 |
||||
321/321H |
515 MPa |
205 MPa |
40% |
95 |
217 |
Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Coefficient of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100 °C (J/kg.K) |
Electrical Resistivity (nΩ.m) |
|||
|---|---|---|---|---|---|---|---|---|---|
0-100 °C |
0-315 °C |
0-538 °C |
at 100 °C |
at 500 °C |
|||||
321/321H |
8027 |
193 |
16.6 |
17.2 |
18.6 |
16.1 |
22.2 |
500 |
720 |
Flat Head Machine Screws
| Nominal Size | A | H | J | T | M | G | N | Phillips Driver Size | |||||
| Head Diameter | Height of Head | Width of Slot | Depth of Slot | Dimensions of Recess | |||||||||
| Diameter | Depth | Width | |||||||||||
| Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||
| 2 4 5 6 7* 8 9* 10 12 14* 1/4 5/16 3/8 1/2 | .172 .225 .252 .279 .305 .332 .358 .385 .438 .491 .507 .635 .762 .875 | 147 .195 .220 .244 .268 .292 .316 .340 .389 .437 .452 .568 .685 775 | .051 .067 .075 .083 .091 .100 .108 .116 .132 .148 .153 .191 .230 .223 | .040 .055 .062 .069 .076 .084 .091 .098 .112 .127 .131 .165 .200 .198 | .031 .039 .043 .048 .048 .054 .054 .060 .067 .075 .075 .084 .094 .106 | .023 .031 .035 .039 .039 .045 .045 .050 .056 .064 .064 .072 .081 .091 | .023 .030 .034 .038 .041 .045 .049 .053 .060 .068 .070 .088 .106 .103 | .015 .020 .022 .024 .027 .029 .032 .034 .039 .044 .046 .058 .070 .065 | .102 .128 .154 .174 .182 .189 .258 .204 .268 .283 .283 .365 .393 .424 | .089 .115 .141 .161 .169 .176 .245 .191 .255 .270 .270 .352 .380 .411 | .063 .089 .086 .106 .114 .121 .146 .136 .156 .171 .171 .216 .245 .276 | .017 .018 .027 .029 .030 .031 .034 .032 .036 .039 .035 .061 .065 .069 | 1 1 2 2 2 2 2 2-3* 3 3 3 4 4 4 |
| Nominal Size | A | W | H | F | U | J | T | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Width Across Flats | Width Across Corners | Height of Head | Diameter of Washer | Thickness of Washer | Width of Slot | Depth of Slot | |||||||
| Max. | Min. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | |
| 4 6 7 8 10 12 14 1/4 5/16 3/8 | .187 .250 .250 .250 .312 .312 .438 .375 .500 .562 | .181 .244 .244 .244 .305 .305 .428 .367 .489 .551 | .202 .272 .272 .272 .340 .340 .409 .409 .545 .614 | .060 .093 .093 .110 .120 .155 .190 .190 .230 .295 | .049 .080 .080 .096 .105 .139 .172 .172 .208 .270 | .243 .328 .328 .348 .414 .432 .520 .520 .676 .780 | .225 .302 .302 .322 .384 .398 .480 .480 .624 .720 | .019 .025 .029 .031 .031 .039 .050 .050 .055 .063 | .011 .015 .017 .019 .019 .022 .030 .030 .035 .037 | .039 .048 .048 .054 .060 .067 .075 .075 .084 .094 | .031 .039 .039 .045 .050 .056 .064 .064 .072 .081 | .042 .053 .062 .074 .080 .103 .111 .111 .134 .168 | .025 .033 .040 .052 .057 .077 .083 .083 100 .131 |
|
Nominal
|
Thread.
|
Hex Socket Size
|
Body diameter and Head height
|
Head Dia
|
Soc. length
|
||
|
Size
|
Pitch
|
Max
|
Min
|
Max
|
Min
|
||
|
J
|
D /H
|
A
|
K
|
||||
|
M3
|
0.5
|
2.50
|
3.00
|
2.86
|
5.50
|
5.20
|
1.3
|
|
M4
|
0.70
|
3.00
|
4.00
|
3.82
|
7.00
|
6.64
|
2.00
|
|
M5
|
0.8
|
4.00
|
5.00
|
4.82
|
8.50
|
8.14
|
2.70
|
|
M6
|
1.0
|
5.00
|
6.00
|
5.82
|
10.00
|
9.64
|
3.30
|
|
M8
|
1.25
|
6.00
|
8.00
|
7.78
|
13.00
|
12.57
|
4.3
|
|
M10
|
1.5
|
8.00
|
10.00
|
9.78
|
16.00
|
15.57
|
5.50
|
|
M12
|
1.75
|
10.00
|
12.00
|
11.73
|
18.00
|
17.57
|
6.60
|
|
M16
|
2.0
|
14.00
|
16.00
|
15.73
|
24.00
|
23.48
|
8.80
|
|
M20
|
2.5
|
17.00
|
20.00
|
19.67
|
30.00
|
29.48
|
10.70
|
|
M24
|
3.0
|
19.00
|
24.00
|
23.67
|
36.00
|
35.38
|
12.90
|
| Industry/Application | Usage |
|---|---|
| Chemical Processing | Resistant to corrosion from chemicals and acids. |
| Oil and Gas | High-temperature and high-pressure environments. |
| Petrochemical | Exposure to corrosive substances. |
| Pharmaceutical | Hygienic and corrosion-resistant fastening solutions. |
| Marine | Protection against saltwater and marine conditions. |
| Food and Beverage | Hygienic fasteners for food processing equipment. |
| Power Generation | Resistance to high-temperature and high-pressure steam. |
| Aerospace | Strength and corrosion resistance for aircraft components. |
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Stainless Steel 321/321H contains titanium, which stabilizes it against chromium carbide precipitation, making it ideal for high-temperature applications. Its resistance to intergranular corrosion sets it apart.
Stainless Steel 321/321H Screws maintain their strength and corrosion resistance at temperatures up to 1500°F (816°C), making them suitable for extreme heat environments.
Yes, Stainless Steel 321/321H Screws are highly corrosion-resistant and are commonly used in marine environments where exposure to saltwater is a concern.
Absolutely, these screws exhibit excellent weldability, ensuring secure and reliable fastening in various applications.
Our screws comply with international standards such as DIN, ASTM, ISO, and BS, ensuring quality and reliability across industries.
In aerospace, Stainless Steel 321/321H Screws are used for fastening critical components, such as engine parts, exhaust systems, and structural elements, due to their high-temperature stability and corrosion resistance.
Yes, Stainless Steel 321/321H Screws are suitable for food processing equipment due to their corrosion resistance and compliance with industry standards.
Stainless Steel 321H contains a higher carbon content than 321, making it more suitable for applications that require resistance to sensitization and intergranular corrosion.
Yes, at GIC Fasteners, we offer customization options to meet specific project requirements. Contact us with your specifications for tailored solutions.
