Spring Hinges McKinney spring hinges, spring pivot hinge, and double acting spring hinges McKinney Ajax Double Acting Horizontal Spring Pivot Hinge - 3001/J3001 McKinney Full Mortise Single Acting Spring Hinge: Standard Weight - 1502/1552 McKinney MacPro Adjustable Spring Hinge - MPS60/MPS679 McKinney 3 1/2" Residential Spring Hinge - 1502/1552 McKinney Full Surface Double Acting Door Spring - 451/452/453 McKinney Non-Template Double Acting Spring Hinge - 1001 McKinney Non-Template Double Acting Spring Hinge - 1001 6x4.5 McKinney Non-Template Full Mortise Double Acting Spring Butt Hinge - 9001 McKinney Template Double Acting Clamp Flange Spring Hinge - 19001 McKinney Half Surface Double Acting Spring Butt Hinge - HS1001