Flush Bolt for Aluminum T-Astragal, Patent No. 273090.
The original version was clear plastic, then white.
Designs have changed slightly depending on the manufacturer
Replacement is 1 inch x 4-11/16 White ABS plastic;
Overall length 6-1/2 inches with 1-3/4 inch bolt.
Used on Stanley, Pease and other doors
Uses a flat spring 3 5/8 long by 1/2 inch wide, fits perfectly in the slot of the bolt.
The spring / upward rise is 7/8 . When fully depressed it expands to 4 inches.
Spring not included with flush bolt. Must re-use old spring.