ASTM F436 is the standard cited for structural washers, hardened (astm f436). This page sets out what the standard controls for this part, reproduces the dimensional table supplied against it, and notes the related designations referenced on drawings.
ASTM F436 — Scope
The table below lists the dimensions catalogued for structural washers, hardened (astm f436) under ASTM F436. The scope of ASTM F436 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to ASTM F436. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by ASTM F436
| For bolt size | Inner diameter (in) | Outer diameter (in) | Thickness (in) | Hardness (HRC) | Type | Finish | Reference standard |
|---|---|---|---|---|---|---|---|
| 1/2" | 17/32 | 1.062 | 0.122 | 38-45 | Type 1 circular | Plain / HDG | ASTM F436 |
| 5/8" | 11/16 | 1.312 | 0.122 | 38-45 | Type 1 circular | Plain / HDG | ASTM F436 |
| 3/4" | 13/16 | 1.469 | 0.122 | 38-45 | Type 1 circular | Plain / HDG | ASTM F436 |
| 7/8" | 15/16 | 1.750 | 0.122 | 38-45 | Type 1 circular | Plain / HDG | ASTM F436 |
| 1" | 1-1/16 | 2.000 | 0.136 | 38-45 | Type 1 circular | Plain / HDG | ASTM F436 |
Companion Standards
A complete specification for structural washers, hardened (astm f436) normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. ASTM F436 is one of them, not all of them.
When to Specify ASTM F436
Choose ASTM F436 for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for structural washers, hardened (astm f436).
Custom manufacturing · Made to drawing
Need a washer to this standard in a non-standard size?
Parts built to ASTM F436 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down. Made by stamping or punching.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
