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SS 321/321H Nuts & Bolts. SS 321 Hex Head Bolts & Nuts, SS 321 Threaded Rods/Bars

SS 321/321H Hex Nuts & Bolts


SS 321/321H Hex Nuts & Bolts Manufacturers –  1.4541, UNS S32100, UNS S32109, 1.4878, Buy SS 321 Hex Nuts, U Bolts, Studbolts & Washers, ASTM A276 321, ASTM A193 B8T Bolts

SS 321 Nuts & Bolts Manufacturers in India – M6 to M100, DIN 931, DIN 934, DIN 975

Metline is a full line manufacturer of stainless steel 321 nuts and bolts, hex nuts, hex head bolts, threaded bars and studbolts in accordance with DIN, ASME, ASTM and ISO standards. We produce stainless steel 321 (ASTM A193 Grade B8T) – Hex Head Bolts, Hex Nuts, Threaded Rod in size range of M6 to M100, with complete certification.

  • SS 321/321H Fastener Products: SS 321 Hex Head Bolts, SS 321 U Bolts, SS 321 Eyelet Bolts, SS 321 Hex Nuts, SS 321 Washers, SS 321 Stud Bolts, SS 321 Threaded Rods, SS 321 Screws
  • SS 321 Bolts: ANSI B18.2.1, DIN 931, DIN 933, ISO 4014, ISO 4017, BS 1768, BS1768, IFI 115
  • SS 321 Nuts: ANSI B18.2.2, DIN 934, ISO 4032, BS1768, BS 1769
  • SS 321 Studbolts: DIN 975, DIN 976, BS 4882, ANSI B16.5
  • SS 321 Washers: Flat Washer, Spring Washer, Lock Washer, Square Washer, Spring Lock Washer, Plain Washer
  • Sizes: Size Ranges from M6 to M100, 1/4″ to 4″ with Varied Lengths
  • Manufacturing Process: Forging, CNC Machining, Thread Rolling, Heat Treatment, Coating, Unique Marking, Testing & Traceability


SS 321 Nuts & Bolts Manufacturers (1.4541, S32100) | SS 321H Hex Nuts & Bolts (S32109, 1.4878) – SS 321 Hex Nuts, SS 321 Hex Head Bolts, SS 321H Studbolts

Metline is one of the largest manufacturers of stainless steel 321 nuts and bolts in size range of M6 to M100 in varied lengths. We specialize in the manufacture and supply of 100% quality tested SS 321H Hex Nuts, SS 321 Hex Head Bolts, SS 321 Threaded Rods, SS 321 Washers and 321 Stainless Steel Bolts.

Given our extensive expertise and knowledge in stainless steel industry we can offer stainless steel 321 seamless pipes, fittings and fasteners, at the most competitive prices in the Industry. We are wholesaler for stainless, acid and heat-resistant steel pipes, fittings and flanges with extensive stocks.

Stainless Steel 321 is a basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) addition. SS 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Stainless Steel 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion. SS 321H is a modification of SS 321 with a higher carbon content, to provide improved high temperature strength.

321/321H Stainless Steel Chemical Composition

NI9.0 – 12.09.0 – 12.0
C0.08 max0.04 – 0.10
MN2.0 max2.0 max
P0.045 max0.045 max
S0.030 max0.030 max
SI1.0 max1.0 max
CR17.0 – 19.017.0 – 19.0
TI5 (C+N) – 0.70 max4(C+N) – 0.70
N0.10 max0.10 max

321/321H Stainless Steel Mechanical Properties

Density8.0 g/cm3
Melting Point1454 °C (2650 °F)
Tensile StrengthPsi – 75000 , MPa – 515
Yield Strength (0.2%Offset)Psi – 30000 , MPa – 205


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