Studs are metal rods with threads either on full length or at both ends. These complement with Nuts to bind the two surfaces together

Material Grade: B7, B7M, L7, L7M

Dimensions: ASME B18.31.2

Threads: ASME ASME B1.1 - UNR

Depending on the customer's specifications, chamfered ends are provided. Nominal Diameter sizes 5/8" - 3"



Nuts feature internal threads that fit to create a strong attachment between the joining surfaces.

Material Grade: 2H, 2HM, 7, 7M

Dimensions: ASME B18.2.2

Threads: ASME ASME B1.1 - UN

Nuts may either have both sides chamfered or have one side as washer-faced. Nominal Diameter sizes 5/8" - 3"



Bolt, the counterpart of nut, feature an external, partially or fully threaded shaft. These have a head at one end.

Material Grade: B7, B7M, L7, L7M

Dimensions: ASME B18.2.1

Threads: ASME ASME B1.1 - UNR

Depending on the customer's drawings, geometry is customised further. Nominal Diameter sizes 5/8" - 3"

Product Grades

NUBOTECK has capability to manufacture to following regular bolting grades. We choose our raw material with utmost care.

  • ASTM A193 Grades B7, B7M
  • ASTM A194 Grades 2H, 2HM, 7, 7M
  • ASTM A320 Grades L7, L7M, L43
Xylan Coated Nuts

Xylan Coated Nuts

Surface Finish

To add corrosion resistance to the fasteners, customers choose the desired finish based on the application, exposure to elements, further treatment. NUBOTECK offers below types of surface finishes.

  • Phosphated - Manganese
  • PTFE Coated - Xylan
  • Zinc Plated

Bolting Applications

Our bolting products are made to the withstand high pressure high temperature environments. We manufacture certified fasteners for Oil and Gas industry.

Our API-20E certified fasteners are generally applied to below products to ensure their compliance with the respective American Petroleum Institute (API) standard.

Product Name API Standard
Wellheads - Christmas Tree API 6A
Piping Valves API 6D
Subsea Pipeline Valves API 6DSS
Blowout Preventers API 16A
Choke and Kill Equipment API 16C
Subsea Wellhead and Tree Equipment API 17D

GAT 144/1, Sanaswadi, Pune - Ahmednagar Highway, Shirur, Pune, Maharashtra 412208, India

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