M12 Hex Lock Nut Collared - Stainless | AIMS Industrial

The Bumax 8.8 Stainless Steel High Tensile Hex Lock Nut (Collared) is a premium Bumax 88 grade austenitic stainless collared lock nut delivering higher corrosion resistance, greater mechanical strength and lower magnetic permeability than standard A4 for critical bolted joints in demanding service environments.

Chemical and Process Industries

• Pump, valve and pipe flange fastening in aggressive chemical and acid environments where standard A4 is marginal
• Reactor vessel and pressure equipment bolted connections requiring superior chloride and pitting resistance
• Chemical dosing and handling equipment specifying high molybdenum content (PRE 27 vs standard A4 PRE 23)

Marine and Offshore

• Offshore platform and subsea equipment bolted joints in severe salt and chloride exposure
• Vessel fittings and marine engineering requiring superior stainless lock nut performance
• Desalination plant and water treatment equipment with high chloride exposure

Food Processing, Pharmaceutical and Hygienic Applications

• Bolted assemblies in food, dairy and pharmaceutical processing where low magnetic permeability is required
• Critical CIP-washed equipment requiring non-contaminating, corrosion-resistant lock nuts
• Cleanroom and medical equipment assembly where magnetic interference must be minimised

Cryogenic and Low-Temperature Engineering

• Cryogenic storage vessels and cold chain equipment rated to -269°C (4 K)
• Liquefied gas and cryogen handling systems requiring retained mechanical performance at extreme low temperature
• Research and scientific equipment in cryogenic service

High-Tensile Structural Engineering

• Structural connections in corrosive environments specifying a premium fatigue-resistant stainless lock nut
• Wind turbine towers, offshore structures and chemical plant structures
• Critical engineering joints where Bumax 88 superior inclusions profile is demanded