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Triton Alloys

321 Stainless Steel Fasteners

ASTM A193 B8T 321 Stainless Steel Fasteners, High Tensile Fasteners, Custom Grade & Size Available At Best Price & Free Sample

Triton Alloys Inc are the leading manufacturer of high integrity special fasteners (e.g. bolts, set screws, stud-bolts, nuts and washers), meeting clients’ exacting demands for critical applications in hostile environments. Whether for offshore (buoyancy and petrochemical), seawater, pump, valve or nuclear, the demands for an exceptional service and supply is never ending. We believe manufacturing bolting in exotic materials is an art form and it is something we have perfected at Triton Alloys Inc.

Our 321 Stainless Steel Fasteners product range includes 321 Stainless Steel Bolts, Hexagon head bolt, Hexagon head screw, Round head square neck bolt, Hexagon socket head cap screw in full thread and half thread, Hexagon wood screw, Hexagon socket button head screw, Hexagon socket button flange screw, Hexagon socket counter sunk head cap screw in full thread and half thread, square nuts, square weld nuts, hexagon weld nuts, thick nyloc nuts, hexagon flange nuts, threaded rods, dowel screws,Plain / Flat Washer, Spring Washers, Countersunk Washer,Tooth Lock Washer and many more. We provide products as per DIN, ANSI, JIS standards.

321 Stainless Steel Fasteners Specification

Material
Size
Standards
Length
Specification
Manufacturer

321 Stainless Steel Fasteners

 

M02 to M33

ASTM A479

3 mm
to 
200 mm

IS

BS

ASTM

GKW

Unbrako

Kundan

APL

Sundaram Precision

EBY Fastener Etc.

Type of Fasteners:

Bolts (Eyebolt)

Stud

Nuts (Nylock, Lock)

Washer (Star, Plain)

Allen Caps

Screws (CSK, Pen Head, Philip, Mushroom, Cheese)

Clamp (U, J, L)

Grab

Rivet (Pop & Hollo) Etc.

In Form of:

Hex

Square

Round

Threading as per Gauge Etc.

Packing: IN BULK :canton/pallet, Small Boxs/carton/ pallet, or customer request
Origin and service-region: European

Origin of 321 Stainless Steel Fasteners are Western European. However projects with eastern origin are possible on request.

TEST CERTIFICATE Manufacturer Test Certificate as per EN 10204 / 3.1
Product Grades: 304, 304L, 316, 316L, 317, 317L, 310,321, 347, 410, 904L, 17-4PH, AL-6XN

Property Class :

For Bolts & Screws: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H

For Nuts: A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040

For SHCS: F837B, F837C, F837E, F837

For Threaded Rods: A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2

Grade Designation

Grade

UNS No

Old British

Euronorm

Swedish SS

Japanese JIS

BS

En

No

Name

321

S32100

321S31

58B, 58C

1.4541

X6CrNiTi18-10

2337

SUS 321

321H

S32109

321S51

-

1.4878

X10CrNiTi18-10

-

SUS 321H

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

321 Stainless Steel Fasteners Composition

Chemical Composition
Typical Chemical compositional ranges for grade 321 Stainless Steel Fasteners

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

Other

321

min.

max

-

0.08

2.00

0.75

0.045

0.030

17.0

19.0

-

9.0

12.0

0.10

Ti=5(C+N)

0.70

321H

min.

max

0.04

0.10

2.00

0.75

0.045

0.030

17.0

19.0

-

9.0

12.0

-

Ti=4(C+N)

0.70

Mechanical Properties
Typical mechanical properties for grade 321 Stainless Steel Fasteners

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

515

205

40

95

217

321H

515

205

40

95

217

321H also has a requirement for a grain size of ASTM No 7 or coarser.

Physical Properties
Typical physical properties for grade 321 Stainless Steel Fasteners

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

8027

193

16.6

17.2

18.6

16.1

22.2

500

720

321 Stainless Steel Fasteners Surface Coating

  • Hot Dipped Galvanizing
  • Epoxy Coating
  • Electro Polished
  • Passivation
  • Zinc Plating
  • Chrome Plating
  • Mirror Buffed
  • Teflon Coating
  • Oxidized

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