Features. The partial closing extra heavy duty models are designed to stand up to the demands of heavy industrial applications like those encountered in ship building. Hot upset square head on spindle withstands higher torque. Square-head spindle has large diameter rolled thread and hardened point which provides smoother operation and added strength. Black oxide coated spindle resists corrosion. Size - 1.87 in.

• The partial closing, extra heavy duty models are designed to stand up to the demands of heavy industrial
• Hot upset square head on spindle withstands higher torque
• Square-head spindle has large diameter rolled thread and hardened point which provides smoother operation
• Black oxide coated spindle resists corrosion
• Size - 1.87 in.

The partial closing, extra heavy duty models are designed to stand up to the demands of heavy industrialJET