Stainless Steel 321/321H Screws

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Manufacturer, Exporter & Supplier of Stainless Steel 321/321H Screws

Stainless Steel 321/321H Screws

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.

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Stainless Steel 321/321H Screws Manufacturer

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

Specification List Of Stainless Steel 321/321H Screws

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.

Chemical Composition Of Stainless Steel 321/321H Screws

Grade
C
Mn
Si
P
S
Cr
Mo
Ni
N
321/321H
min.
max.
-
0.080
-
2
-
1
-
0.045
-
0.030
-
19
-
-
-
13
-
-

Mechanical Properties Of Stainless Steel 321/321H Screws

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

Stainless Steel 321/321H Screws Physical Properties

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

Stainless Steel 321/321H Self Tapping Screw Dimensions

Self Tapping Screws Flat Head Dimensions

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

SS 321/321H Self Drilling, Tapping, Machine Screw Dimensions

Self Tapping Screws Dimensions
Slotted, Hex Head
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

Dimensions of Stainless Steel 321/321H Socket Head Cap Screws

Dimensions of Socket Head Cap Screws
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

Range of Stainless Steel 321/321H Screws

Different Types of Stainless Steel 321/321H Screws

  • Stainless Steel 321/321H Hex Cap Screws
  • Stainless Steel 321/321H Socket Cap Screws
  • Stainless Steel 321/321H Square Head Screws
  • Stainless Steel 321/321H Flange Head Screws
  • Stainless Steel 321/321H Button Head Screws
  • Stainless Steel 321/321H Round Head Screws
  • Stainless Steel 321/321H Oval Head Screws
  • Stainless Steel 321/321H Hammer Head Screws
  • Stainless Steel 321/321H Truss Head Screws
  • Stainless Steel 321/321H Dome Head Screws
  • Stainless Steel 321/321H Pan Head Screws
  • Stainless Steel 321/321H Cheese Head Screws
  • Stainless Steel 321/321H Knurled Head Screws
  • Stainless Steel 321/321H Mushroom Head Screws
  • Stainless Steel 321/321H Fillister Head Screws
  • Stainless Steel 321/321H T Head Screws
  • Stainless Steel 321/321H Countersunk Screws
  • Stainless Steel 321/321H Set Screws
  • Stainless Steel 321/321H Coach Screws
  • Stainless Steel 321/321H Mating Screws
  • Stainless Steel 321/321H Wood Screws
  • Stainless Steel 321/321H Butterfly Screws
  • Stainless Steel 321/321H Self Drilling SMS
  • Stainless Steel 321/321H Thread Cutting
  • Stainless Steel 321/321H Thread Forming
  • Stainless Steel 321/321H Thumb Screws
  • Stainless Steel 321/321H Self Tapping Screws
  • Stainless Steel 321/321H Machined Screw
  • Stainless Steel 321/321H Self Drilling Screws
  • Stainless Steel 321/321H Phillips Head Screws

Characteristics of Stainless Steel 321/321H Screws

  • High Corrosion Resistance: Stainless Steel 321/321H Screws offer excellent resistance to corrosion, making them suitable for marine and chemical environments.
  • High Temperature Stability: These screws maintain their strength and integrity at elevated temperatures, up to 1500°F (816°C).
  • Exceptional Weldability: Stainless Steel 321/321H can be easily welded, ensuring secure fastening and assembly.
  • Excellent Mechanical Properties: These screws provide superior tensile and creep strength, making them ideal for structural applications.
  • Good Formability: They exhibit good formability and can be fabricated into various screw types and shapes.
  • Resistant to Intergranular Corrosion: Stainless Steel 321H screws are resistant to intergranular corrosion due to their low carbon content.
  • Compliance with Standards: Our screws conform to international standards, including DIN, ASTM, ISO, and BS, ensuring quality and reliability.

Applications of Stainless Steel 321/321H Screws

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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We can assure you one of best prices in the Industry. We respond to all enquiries with in 4-8 hours on all business days. Send us your requirement on info@gicfasteners.com
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Stainless Steel 321/321H Screws - FAQs

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.

Stainless Steel 321/321H Screws - Export Destination

Stainless Steel 321/321H Screws Supplier in North America
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States.
Stainless Steel 321/321H Screws Supplier in South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.
Stainless Steel 321/321H Screws Supplier in Europe
Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic (Czechia), Denmark, Estonia, Finland, France, Germany, Greece, Holy See, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom.
Stainless Steel 321/321H Screws Supplier in Asia
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Oman, Pakistan, Palestine, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Sri Lanka, State of Palestine, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates, Uzbekistan, Vietnam, Yemen.
Stainless Steel 321/321H Screws Supplier in Australia
Australia, Fiji, Kiribati, Marshall Islands, Micronesia, Nauru, New Zealand, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu.