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Bolt and nut for grooved couplings

TAVINOX GROOVE · coupling accessories

Bolt and nut for grooved couplings

Fasteners for rigid grooved couplings (1× bolt + 1× nut)

Fasteners for TAVINOX GROOVE rigid grooved couplings — a set of 1× bolt + 1× nut in stainless steel, available for sizes DN 125 to DN 300. Threads from M10 to M24 depending on the coupling size. Maximum tightening torques are given in the table below.

Prices from 65 CZK excl. VAT / pc

The price depends on the size — see the overview below. Fasteners are available through our network of wholesale partners.

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Threads and tightening torques

Tighten the coupling nuts evenly, alternating from side to side, until the bolt pads make metal-to-metal contact. The values are the maximum permissible tightening torques given in the TAVINOX GROOVE technical manual (section 5.1). Material: stainless steel.

DN 125⌀ 133,0 mm
Nut threadM10
Max. torque

65–78 N·m

Price / pc65 CZK excl. VAT
DN 150⌀ 159 mm
Nut threadM16
Max. torque

280–330 N·m

Price / pc149 CZK excl. VAT
DN 200⌀ 219,1 mm
Nut threadM18
Max. torque

380–450 N·m

Price / pc210 CZK excl. VAT
DN 250⌀ 273,0 mm
Nut threadM20
Max. torque

540–650 N·m

Price / pc315 CZK excl. VAT
DN 300⌀ 323,9 mm
Nut threadM24
Max. torque

940–1120 N·m

Price / pc315 CZK excl. VAT

⚠️ DO NOT continue tightening the nuts once proper metal-to-metal contact has been made. For the detailed procedure see the TAVINOX GROOVE technical manual.

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Bolt and nut for grooved couplings — TAVINOX GROOVE | TAVINOX