Related Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
F436 Washer Dimensions — Inch and Metric Tolerances
ASTM F436 washer dimensions are specified per F436/F436M for flatness, concentricity, and burr across four nominal-size bands in the inch series and two bands in the metric series. Inch washers cover thread diameters from 1/4 in. through 4 in.; metric washers cover M12 through M100. Per-geometry size data (inside diameter, outside diameter, thickness, clipped width) is published on the four Type 1 and four Type 3 variant pages.
ASTM F436 Washer Dimensional Tolerances (Inch Washers)
| Dimensional Characteristics | <1 in. Nominal Size |
1 through 11/2 in. Nominal Size | >11/2 through 3 in. Nominal Size | >3 in. Nominal Size |
|---|---|---|---|---|
| Flatness: max deviation from straightedge placed on cut side shall not exceed (in.) | 0.010 | 0.015 | 0.020 | 0.032 |
| Concentricity, in.: center of hole to outside diameter | 0.030 FIRA | 0.060 FIRA | 0.090 FIRA | 0.250 FIRA |
| Burr shall not project above immediately adjacent washer surface more than (in.) | 0.010 | 0.015 | 0.020 | 0.025 |
|
||||
ASTM F436M Washer Dimensional Tolerances (Metric Washers)
| Dimensional Characteristics | 12mm through 16 mm Nominal Size |
>16 mm Nominal Size |
|---|---|---|
| Flatness: max deviation from straightedge placed on cut side shall not exceed | B | B |
| Concentricity, mm: center of hole to outside diameter | 0.6 mm FIRA | 0.9 mm FIRA |
| Burr shall not project above immediately adjacent washer surface more than (mm) | 0.25 mm | 0.25 mm |
|
||
Per-Geometry Dimensional Data
Per-size inside diameter, outside diameter, thickness and clipped-width measurements are published on each variant page:
F436 vs F436M Dimensions
F436 covers the inch-series dimensional tables (thread diameter 1/4 in. through 4 in.). F436M covers the metric-series tables (M12 through M100). The mechanical and hardness requirements are identical between the two; only the dimensional tables differ to match inch versus metric thread sizes. Both Type 1 (carbon steel) and Type 3 (weathering steel) grades are available in both series. Detailed F436/F436M specification data is on the F436 washer specifications page; standard reference download is the F436 PDF.
Satisfaction Survey
