Technical Drawing Overview

Dimensions and Tolerances:
- Key dimensions include 31.75 mm with a tolerance of +0.13 mm and 50.80 mm.
- Air port thread specification: M3 x 0.5 with a tolerance of +0.005 mm.

Installation Options:
- Multiple installation configurations labeled A, B, C, and D are indicated.

Material and Finish:
- Material specified as Aluminum 7075 with carbon.
- Finish requirement: Anodize per MIL-A-8625 standard.

Drawing and Documentation Details:
- Dimensions are in millimeters.
- Tolerances include fractional, angular (machining and bending), two-place decimal, and three-place decimal.
- Geometric tolerancing is applied as per relevant standards.
- The drawing is proprietary and confidential, owned by OAVCO LLC, with reproduction restrictions.
- Drawing scale is 1:1.
- The drawing includes placeholders for drawing, checking, engineering approval, manufacturing approval, and quality assurance.

Additional Notes:
- The drawing is labeled as sheet 1 of 1, with drawing number OAV020MB.
- Weight and application details are not specified.
- A clear instruction: "DO NOT SCALE DRAWING" is provided.

This summary captures the essential specifications, tolerances, material and finish requirements, and proprietary notices from the technical drawing for the 20 mm air bushing component.