⚙️ B1 — RULE ENGINE

ASME B18.21.1 — Size Navigator

Deterministic evaluation of fastener standards based on geometry, material, and compliance constraints. Complete engineering specifications across all 54 size/grade/finish variants.

📥 Input Vector

Standard

Diameter

Material Grade

Decision State

INSTALLABLE

No constraint violation detected.

Risk Score

0.12

Low structural risk

Route Mapping

/standards/asme-b18-21-1/

Canonical equivalence resolved

📋 [B1 TRACE LOG]

INPUT → STANDARD: ASME B18.21.1 | SIZE: 1/2" | GRADE: Grade 5

✓ STEP 1 → Geometry validation: PASS

✓ STEP 2 → Thread compatibility: PASS

✓ STEP 3 → Load constraint: PASS

ℹ STEP 4 → Route mapping: RESOLVED

✓ RESULT → INSTALLABLE (score 0.12)

📋 Standard Information

Standard ASME B18.21.1

Category WASHERS

Type WASHER

Total Specs 54

Available Sizes 9

Material Grades —

Surface Finishes —

🔗 Cross-Standard Equivalence

Standard	Name	Status	Risk Note
ASME B18.21.1, DIN 127-A	Equivalent standards in cluster	IN CLUSTER	—

📏 Size Navigator

Select a size to view its complete engineering data — including dimensional tolerances, material grades, mechanical properties, and surface finish options.

1/4" 6 variants → 5/16" 6 variants → 3/8" 6 variants → 7/16" 6 variants → 1/2" 6 variants → 5/8" 6 variants → 3/4" 6 variants → 7/8" 6 variants → 1-1/4" 6 variants →

🔄 Standard Redirect Map

Non-canonical standard paths are automatically redirected to their canonical ISO equivalents via the V-SYSTEM Authority Lock. Equivalent standards: ASME B18.21.1, DIN 127-A

Source (Non-Canonical)	Target (Canonical Route)
No redirects — this is the canonical standard

                CEV-1 HASH: 55c5870cbe63410a402dfe182b8637ba1fbe47ad0327f5d247c9c5e529311c36
                FROZEN: 2026-06-08 21:10:08
                ASSET: standard_map_core.csv
                CLUSTER: [ASME B18.21.1, DIN 127-A]
            
✓ CEV-1 Verified

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