Smith & Wesson Revolver L Frame Model 586 .357 Magnum Strain Screw Round Butt Blue Steel 586172

Smith & Wesson L Frame Model 586 Strain Screw - Round Butt

This is a genuine used Smith & Wesson strain screw for L Frame Model 586 revolvers with round butt grips, chambered in .357 Magnum. The strain screw is a critical component located at the bottom of the grip frame that tensions the mainspring, directly affecting trigger pull weight and hammer function. This blue steel screw ensures proper mainspring tension for reliable ignition.

Key Features:

• Authentic Smith & Wesson factory part
• Blue steel finish matching Model 586 styling
• Round butt configuration
• Controls mainspring tension
• Affects trigger pull weight and feel
• Used condition - fully functional
• Essential for proper hammer function

Compatibility: Fits Smith & Wesson L Frame Model 586 revolvers with round butt grips in .357 Magnum. The strain screw is frame-specific and must match your grip configuration (round butt vs. square butt).

Condition: Used part in good working condition. Shows normal wear consistent with age and use. Threads are clean and functional. No stripping or damage.

Installation Note: Professional installation by a qualified gunsmith is recommended. The strain screw must be adjusted to proper tension - too tight increases trigger pull weight, too loose can cause light strikes or misfires. Proper adjustment requires knowledge of mainspring function and trigger dynamics.

Part Number: 586172