Flat Washer Dimensions: 5/16
Military-preferred flat washer dimensional data per MIL-STD-1764 Sections 301-304 — OD, ID (min/max), and thickness for flat round and flat square/radius washers by nominal bolt/screw size (#0 through 3-inch), series (Narrow/Regular/Wide), material (Aluminum Alloy, Carbon Steel, CRES), and finish. Applicable documents: AN960, NAS620, MS9320, MS15795, MS16212, NAS1401. Used for bearing area, joint stack-up, and clearance calculations in aerospace and military hardware design.
| nominal size | record id | applicable document | finish | id max in (in) | id min in (in) | material | nominal size decimal in (in) | od in (in) | part number | series | thickness in (in) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5/16 | AN960_516L_steel_wide | AN960 | Cadmium Plate | 0.349 | 0.318 | Carbon Steel | 0.313 | 0.875 | AN960-516L | Wide | 0.063 |
| 5/16 | AN960_516_steel_regular | AN960 | Cadmium Plate | 0.349 | 0.318 | Carbon Steel | 0.313 | 0.625 | AN960-516 | Regular | 0.049 |
| 5/16 | MS15795_A516L_alum_wide | MS15795 | Anodize | 0.349 | 0.318 | Aluminum Alloy | 0.313 | 0.875 | MS15795-A516L | Wide | 0.065 |
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