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Stainless Steel 321 Fasteners Supplier

Stainless steel 321 is a type of austenitic stainless steel that contains titanium. It is resistant to corrosion and can be used in high-temperature environments due to its excellent mechanical properties. Stainless steel 321 includes 17-19% chromium, 9-12% nickel, and 0.5% titanium. SS 1.4541 Fasteners has a maximum service temperature of 870°C and can be used in applications that require good weldability, corrosion resistance, and excellent oxidation resistance.

ASTM F593 321H Stainless Steel Fasteners, SUS 321H Fastener, 321 Stainless Steel Fasteners, SS 321 Fasteners Manufacturer, SS 321 Fasteners Stockist, SS 321 Fasteners Supplier, Stainless Steel 321 Fasteners Manufacturer In India, Stainless Steel 321 Fasteners Stockist In India, Stainless Steel 321 Fasteners Manufacturer, Stainless Steel 321 Fasteners Supplier In India, Stainless Steel 321H Fasteners, Stainless Steel 321 Fasteners Stockist, Stainless Steel 321 Fasteners, SS 321 Fasteners, Stainless Steel 321 Fasteners Manufacturer In Mumbai, Stainless Steel 321 Fasteners Stockist In Mumbai, Stainless Steel 321 Fasteners Supplier In Mumbai, Stainless Steel 321 Fasteners Supplier In Mumbai, India.

Stainless Steel 1.4878 Fasteners is a high-strength austenitic stainless steel alloy designed to offer excellent resistance to corrosion, particularly in high-temperature environments. Fasteners from this material are highly sought after in aerospace, chemical processing, and power generation industries. One of the most prominent features of Stainless Steel 321 Fasteners is their exceptional corrosion resistance due to the presence of a high amount of chromium and nickel in the alloy composition. This material also contains titanium, which provides added stability and improved resistance to intergranular corrosion.

ASTM F593 321H Stainless Steel Fasteners are known for their exceptional strength and durability, which makes them ideal for use in demanding applications. They offer excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, common issues in harsh environments. These fasteners are also highly resistant to oxidation, even at high temperatures. Another important feature of SS 321 Bolts is their ease of fabrication, making them ideal for use in various applications. They can be easily machined, welded, and formed to suit specific requirements. At Neelkamal Alloys LLP, we offer a variety of high-quality Stainless Steel Products, including Stainless Steel 347 Fasteners, Stainless Steel 310S Fasteners and more.

321 Stainless Steel Fasteners also offer good thermal stability. They can withstand temperatures up to 870°C without significantly changing their properties. This makes them ideal for high-temperature applications like exhaust systems, furnaces, and boilers. 

UNS S32100 Fasteners offer several benefits that make them popular in various industrial applications. One of the most significant benefits of these fasteners is their excellent corrosion resistance. This makes them ideal for use in environments where exposure to harsh chemicals, saltwater, and other corrosive elements is a concern. Their oxidation resistance also makes them suitable for use in high-temperature applications.

Another significant advantage of SS 321 Fasteners is their high strength and durability. They can withstand significant mechanical stress and maintain structural integrity, even in harsh environments. This makes them ideal for applications where safety and reliability are paramount, such as aerospace and defence industries. We offer a wide range of products, including Super Duplex Steel 2507 Nuts, Monel K500 Nuts,\ & many more.

Stainless Steel 1.4878 Fasteners are also easy to fabricate, making them ideal for customized applications. They can be easily machined, formed, and welded to meet specific requirements. This SS 321 Nuts makes them versatile for various industries, including automotive, construction, and manufacturing.

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Specification For SS 321 Fasteners

Standard ASTM F593, F594, A193, A194 / ASME SF593, F594, SA193, SA194
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
Length 3 mm to 200 mm
Threads UNF, BSW, BSF, METRIC, UNC, or as required
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 321 Stud Bolt length
  • ANSI B 18.2.4 2M
  • as per defined in ASME B18.2.2 SS 321 Hex nuts
Form Hex, Threading, Square, Round as per Gauge Etc.
Raw materials Source JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification Dual Certified As per ASTM & ASME Codes
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production process M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC

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Equivalent Grades Of Stainless Steel 321H Fasteners

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

ASTM F593 321 SS Fasteners Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

321H SS Fasteners Mechanical Properties

Density Melting Point Tensilee Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

SS 321 Hex Bolt Dimension

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

Size Chart of AISI 321H Stainless Steel Nuts

Nut Size (mm)
Diameter* (mm)
Height (mm)
Hex Nut
Jam Nut
Nylock Nut
2mm
4
1.6
1.2
2.5mm
5
2
1.6
3mm
5.5
2.4
1.8
4
4mm
7
3.2
2.2
5
5mm
8
4
2.7
5
6mm
10
5
3.2
6
7mm
11
5.5
3.5
8mm
13
6.5
4
8
10mm
17
8
5
10
12mm
19
10
6
12
14mm
22
11
7
14
16mm
24
13
8
16
18mm
27
15
9
18.5
20mm
30
16
10
20
* This is the diameter across the flats. It is also the size of wrench to use.

Dimensions of SS 321 Heavy Hex Nuts

Nominal Size or Basic Major Thread Diameter
F
G
H
Width Across Flats
Width Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
1/4
.2500
1/2
.500
.488
.577
.556
15/64
.250
.218
5/16
.3125
9/16
.562
.546
.650
.622
19/64
.314
.280
3/8
.3750
11/16
.688
.669
.794
.763
23/64
.377
.341
7/16
.4375
3/4
.750
.728
.866
.830
27/64
.441
.403
1/2
.5000
7/8
.875
.850
1.010
.969
31/64
.504
.464
9/16
.5625
15/16
.938
.909
1.083
1.037
35/64
.568
.526
5/8
.6250
1-1/16
1.062
1.031
1.227
1.175
39/64
.631
.587
3/4
.7500
1-1/4
1.250
1.212
1.443
1.382
47/64
.758
.710
7/8
.8750
1-7/16
1.438
1.394
1.660
1.589
55/64
.885
.833
1
1.0000
1-5/8
1.325
1.575
1.876
1.796
63/64
1.012
.956
1-1/8
1.1250
1-13/16
1.812
1.756
2.093
2.002
1-7/64
1.139
1.079
1-1/4
1.2500
2
2.000
1.938
2.309
2.209
1-7/32
1.251
1.187
1-3/8
1.3750
2-3/16
2.188
2.119
2.526
2.416
1-11/32
1.378
1.460
1-1/2
1.5000
2-3/8
2.375
2.300
2.742
2.622
1-15/32
1.505
1.433
1-5/8
1.6250
2-9/16
2.562
2.481
2.959
2.828
1-19/32
1.632
1.556
1-3/4
1.7500
2-3/4
2.750
2.662
3.175
3.035
1-23/32
1.759
1.679
2
2.0000
3-1/8
3.125
3.025
3.608
3.449
1-31/32
2.013
1.925
2-1/4
2.2500
3-1/2
3.500
3.388
4.041
3.862
2-13/64
2.251
2.155
2-1/2
2.5000
3-7/8
3.875
3.750
4.474
4.275
2-29/64
2.505
2.401
2-3/4
2.7500
4-1/4
4.250
4.112
4.907
4.688
2-45/64
2.759
2.647
3
3.0000
4-5/8
4.625
4.475
5.340
5.102
2-61/64
3.013
2.893
3-1/4
3.2500
5
5.000
4.838
5.774
5.515
3-3/16
3.252
3.124
3-1/2
3.5000
5-3/8
5.375
5.200
6.207
5.928
3-7/16
3.506
3.370
3-3/4
3.7500
5-3/4
5.750
5.562
6.640
6.341
3-11/16
3.670
3.616
4
4.0000
6-1/8
6.125
5.925
7.073
6.755
3-15/16
4.014
3.862

Stainless Steel 321H Hex Nuts Dimension

Nominal Size or Basic Major Thread Diameter
F
G
H
Width Across Flats
Width Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
1/4
.2500
7/16
.438
.428
.505
.488
7/32
.226
.212
5/16
.3125
1/2
.500
.489
.577
.557
17/64
.273
.258
3/8
.3750
9/16
.562
.551
.650
.628
21/64
.337
.479
7/16
.4375
11/16
.688
.675
.794
.768
3/8
.385
.365
1/2
.5000
3/4
.750
.736
.866
.840
7/16
.448
.427
9/16
.5625
7/8
.875
.861
1.010
.982
31/64
.496
.473
5/8
.6250
15/16
.938
.922
1.083
1.051
35/64
.559
.535
3/4
.7500
1-1/8
1.125
1.088
1.299
1.240
41/64
.665
.617
7/8
.8750
1-5/16
1.312
1.269
1.516
1.447
3/4
.776
.724
1
1.0000
1-1/2
1.500
1.450
1.732
1.653
55/64
.887
.831
1-1/8
1.1250
1-11/16
1.688
1.631
1.949
1.859
31/32
.999
.939
1-3/8
1.3750
2-1/16
2.062
1.994
2.382
2.273
1-11/64
1.206
1.138
1-1/2
1.500
2-1/4
2.250
2.175
2.598
2.480
1-9/32
1.ASTM A194 GR. 8
1.245
1-5/8
1.6250
2-7/16
2.438
2.356
2.815
2.686
1-25/64
1.429
1.353
1-3/4
1.7500
2-5/8
2.625
2.538
3.031
2.893
1-1/2
1.540
1.460
2
2.0000
3
3.000
2.900
3.464
3.306
1-23/32
1.763
1.675
2-1/4
2.2500
3-3/8
3.375
3.263
3.897
3.719
1-15/16
1.986
1.890
2-1/2
2.5000
3-3/4
3.750
3.625
4.330
4.133
2-5/32
2.209
2.105
2-3/4
2.7500
4-1/8
4.125
3.988
4.763
4.546
2-3/8
2.431
2.319

Various Types of Stainless Steel 321 Fasteners

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Countries We Export To

Morocco, France, United Kingdom, Taiwan, Bangladesh, Mexico, Belgium, New Zealand, Afghanistan, Poland, Chile, Bahrain, Iran, Ukraine, Greece, Bolivia, Hong Kong, Lithuania, Philippines, Czech Republic, Bhutan, Kenya, Ireland, Ecuador, Kuwait, Peru, South Africa, Estonia, Angola, Algeria, Mexico, Belarus, Iraq, Chile, Lebanon, Thailand, Venezuela, Oman, Slovakia, Poland, Bulgaria, Brazil, Croatia, Spain, Italy, Colombia, Vietnam, Puerto Rico, India, Romania, Iran, Kazakhstan, United Arab Emirates, Nigeria, Netherlands, Turkey, Serbia, Singapore, Pakistan, Japan, Qatar, Tunisia, Austria, Yemen, Malaysia, Germany, China, Sri Lanka, Jordan, Nigeria, Denmark, Tibet, Egypt, Argentina, Ghana, Sweden, Hungary, Gambia, United States, Canada, Macau, Indonesia, Mongolia, Norway, Portugal, South Korea, Zimbabwe, Switzerland, Australia, Trinidad & Tobago, Gabon, Russia, Costa Rica, Finland, Libya, Azerbaijan, Nepal, Israel, Namibia, Saudi Arabia.

Cities We Supply

Bogota, Ludhiana, Nagpur, Madrid, New Delhi, Dallas, Courbevoie, Ranchi, Santiago, Thane, Jeddah, La Victoria, Kanpur, Singapore, Seoul, London, Rio de Janeiro, Bengaluru, Lahore, Ulsan, Sharjah, Geoje-si, Calgary, Al Jubail, Secunderabad, Baroda, Faridabad, Bangkok, Navi Mumbai, Chandigarh, Ahmedabad, Dubai, Vung Tau, Melbourne, Houston, Edmonton, Cairo, Thiruvananthapuram, Manama, Hong Kong, Bhopal, Noida, Algiers, Atyrau, Ankara, Tehran, Visakhapatnam, Brisbane, Ho Chi Minh City, Karachi, Al Khobar, Nashik, Aberdeen, Vadodara, Toronto, Chennai, Gurgaon, Rajkot, Ahvaz, Istanbul, Port-of-Spain, Moscow, Los Angeles, Perth, Dammam, Hyderabad, Jamshedpur, Kuwait City, Indore, Granada, Hanoi, Abu Dhabi, Coimbatore, Petaling Jaya, New York, Kolkata, Muscat, Pimpri-Chinchwad, Howrah, Mexico City, Chiyoda, Colombo, Doha, Busan, Jaipur, Gimhae-si, Riyadh, Ernakulam, Jakarta, Haryana, Caracas, Pune, Surat, Kuala Lumpur, Montreal, Mumbai, Sydney, Lagos, Milan.