BZ Switch from Honeywell has a military standard construction available with over 50 listings on the MILS-8805. Features of the BZ switch include: 

• Operating force as low as 4 oz. (113 grams) maximum
• Sensitive differential travel as low as .0002 to .0003 inches (0,005 to 0,008 mm
• Power load switching capability to 25 amperes
• Motor handling capacity to 2 horsepower at 250 VAC
• Long mechanical life
• High temperature constructions for up to +400°F (204°C)
• Momentary or maintained contact action
• Alloy contacts available for special application needs
• Variety of integral actuators
• Variety of auxiliary actuators
• Variety of terminal designs
• Optional sealed plunger and cover
• Stainless steel snap spring available
• Qualified products list
• UL recognized, CSA certified