diff --git a/alembic/versions/235d823a56ee_drop_objective_thread_pitch_from_scope_.py b/alembic/versions/235d823a56ee_drop_objective_thread_pitch_from_scope_.py
new file mode 100644
index 0000000..bdb3578
--- /dev/null
+++ b/alembic/versions/235d823a56ee_drop_objective_thread_pitch_from_scope_.py
@@ -0,0 +1,29 @@
+"""drop_objective_thread_pitch_from_scope_infos
+
+Revision ID: 235d823a56ee
+Revises: 04425ce3d4d5
+Create Date: 2026-08-17 15:18:26.763831
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = "235d823a56ee"
+down_revision: Union[str, None] = "04425ce3d4d5"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("scope_infos", schema=None) as batch_op:
+        batch_op.drop_column("objective_thread_pitch")
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("scope_infos", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column("objective_thread_pitch", sa.String(), nullable=True)
+        )
diff --git a/app/crud/scope_info.py b/app/crud/scope_info.py
index 59b8112..72f22fd 100644
--- a/app/crud/scope_info.py
+++ b/app/crud/scope_info.py
@@ -37,7 +37,6 @@ async def create(
     magnification_max: float | None = None,
     model_suffix: str | None = None,
     objective_lens_diameter_mm: float | None = None,
-    objective_thread_pitch: str | None = None,
 ) -> ScopeInfo:
     info = ScopeInfo(
         augmented_part_id=augmented_part_id,
@@ -45,7 +44,6 @@ async def create(
         magnification_max=magnification_max,
         model_suffix=model_suffix,
         objective_lens_diameter_mm=objective_lens_diameter_mm,
-        objective_thread_pitch=objective_thread_pitch,
     )
     db.add(info)
     await db.commit()
diff --git a/app/models/scope_info.py b/app/models/scope_info.py
index 7167766..002bd87 100644
--- a/app/models/scope_info.py
+++ b/app/models/scope_info.py
@@ -32,8 +32,3 @@ class ScopeInfo(Base):
     objective_lens_diameter_mm: Mapped[float | None] = mapped_column(
         Float, nullable=True, default=None
     )
-    # Kept as the raw string from the sheet (e.g. "0.75", "1/16") so no precision
-    # or notation is lost; the parsed thread lives on its own AttachmentPoint.
-    objective_thread_pitch: Mapped[str | None] = mapped_column(
-        String, nullable=True, default=None
-    )
diff --git a/app/schemas/scope_info.py b/app/schemas/scope_info.py
index ffa359f..e055f07 100644
--- a/app/schemas/scope_info.py
+++ b/app/schemas/scope_info.py
@@ -6,7 +6,6 @@ class ScopeInfoBase(BaseModel):
     magnification_max: float | None = None
     model_suffix: str | None = None
     objective_lens_diameter_mm: float | None = None
-    objective_thread_pitch: str | None = None
 
 
 class ScopeInfoRead(ScopeInfoBase):
diff --git a/app/services/scope_import.py b/app/services/scope_import.py
index eeb94bf..0116711 100644
--- a/app/services/scope_import.py
+++ b/app/services/scope_import.py
@@ -15,7 +15,6 @@ sub_part_type                       → SubPartType (get-or-create under "Scope"
 product_number                      → AugmentedPart.sku  (also the upsert / fit-lookup key)
 magnification_min / _max            → ScopeInfo
 objective_lens_diameter_mm          → ScopeInfo (descriptive only, no attachment point)
-objective_thread_pitch              → ScopeInfo
 ocular_outer_diameter_mm            → StaticConnection + AttachmentPoint "Ocular"
 objective_thread                    → ISO/UNC thread + AttachmentPoint "Objective"
 ocular_fit                          → Fit: scope's Ocular AP ↔ referenced part's first AP
@@ -75,7 +74,6 @@ EXPECTED_COLUMNS = [
     "url",
     "ocular_outer_diameter_mm",
     "ocular_fit",
-    "objective_thread_pitch",
     "objective_thread",
     "objective_fit",
 ]
@@ -321,7 +319,6 @@ async def import_scopes(db: AsyncSession, rows: list[dict]) -> ScopeImportResult
                 magnification_max=_num(row.get("magnification_max")),
                 model_suffix=model_suffix,
                 objective_lens_diameter_mm=_num(row.get("objective_lens_diameter_mm")),
-                objective_thread_pitch=_text(row.get("objective_thread_pitch")),
             )
 
             # Rebuild attachment points from scratch so re-imports stay idempotent
diff --git a/app/templates/_scopes_table_card.html b/app/templates/_scopes_table_card.html
index f49aebe..832cf9a 100644
--- a/app/templates/_scopes_table_card.html
+++ b/app/templates/_scopes_table_card.html
@@ -51,8 +51,6 @@
           <td>
             {% if row.objective_attachment_point %}
               {{ connection_spec(row.objective_attachment_point) }}
-            {% elif info and info.objective_thread_pitch %}
-              {{ info.objective_thread_pitch }}
             {% else %}<span class="muted">—</span>{% endif %}
           </td>
           {% for ct in column_types %}
diff --git a/app/templates/admin/augmented_part_detail.html b/app/templates/admin/augmented_part_detail.html
index 6514756..419515c 100644
--- a/app/templates/admin/augmented_part_detail.html
+++ b/app/templates/admin/augmented_part_detail.html
@@ -50,7 +50,6 @@
             {{ scope_info.objective_lens_diameter_mm }} mm
           {% else %}—{% endif %}
         </dd>
-        <dt>Objective thread</dt><dd>{{ scope_info.objective_thread_pitch or "—" }}</dd>
       </dl>
     </div>
     {% endif %}
diff --git a/tests/test_augmented_part_detail.py b/tests/test_augmented_part_detail.py
index 9c93f9e..1cd05a1 100644
--- a/tests/test_augmented_part_detail.py
+++ b/tests/test_augmented_part_detail.py
@@ -38,7 +38,6 @@ async def _seed_part_with_fit(db):
             augmented_part_id=scope.id,
             magnification_min=3,
             magnification_max=18,
-            objective_thread_pitch="M52x0.75",
         )
     )
     ap_s = AttachmentPoint(augmented_part_id=scope.id, attachment_point_name_id=apn.id)
@@ -80,7 +79,6 @@ async def test_detail_shows_attributes_and_fits_readonly(
     # Attributes
     assert "Alpha 3-18x50" in body
     assert "ALP-318" in body
-    assert "M52x0.75" in body  # scope info
     assert "Objective" in body  # attachment point
     # Fits are shown (the other part in the fit)
     assert "Flip cover 50mm" in body
diff --git a/tests/test_scope_guide.py b/tests/test_scope_guide.py
index 3a133df..a31af15 100644
--- a/tests/test_scope_guide.py
+++ b/tests/test_scope_guide.py
@@ -49,7 +49,6 @@ async def _seed_guide_data(db):
             magnification_min=3,
             magnification_max=18,
             objective_lens_diameter_mm=50,
-            objective_thread_pitch="M52x0.75",
         )
     )
 
@@ -222,7 +221,6 @@ async def test_scopes_page_renders_rows_and_fits(
     assert "Alpha 3-18x50" in body  # scope row
     assert "Flip cover 50mm" in body  # a matching part in a fit column
     assert "fit-badge-exact" in body  # the exact fit badge
-    assert "M52x0.75" in body  # scope info: objective thread
     assert "3-18" in body  # magnification range, integral values un-padded
 
 
@@ -294,9 +292,7 @@ async def test_scopes_page_renders_objective_attachment_point_thread(
     resp = await client.get("/scopes")
     assert resp.status_code == 200
     body = resp.text
-    # The attachment point's thread spec wins over ScopeInfo.objective_thread_pitch.
     assert "M44.0×0.5" in body
-    assert "M52x0.75" not in body
 
 
 @pytest.mark.asyncio
diff --git a/tests/test_scope_import.py b/tests/test_scope_import.py
index d758297..d0499bf 100644
--- a/tests/test_scope_import.py
+++ b/tests/test_scope_import.py
@@ -26,7 +26,6 @@ HEADERS = [
     "url",
     "ocular_outer_diameter_mm",
     "ocular_fit",
-    "objective_thread_pitch",
     "objective_thread",
     "objective_fit",
 ]
@@ -59,7 +58,6 @@ def _scope_row(**overrides):
         "url": "https://example.com/viper",
         "ocular_outer_diameter_mm": 40,
         "ocular_fit": None,
-        "objective_thread_pitch": "0.75",
         "objective_thread": "M40x0.75",
         "objective_fit": None,
     }
@@ -142,7 +140,6 @@ async def test_import_creates_scope_with_info_and_attachment_points(db_sessionma
         assert info.magnification_max == 25
         assert info.model_suffix == "PST"
         assert info.objective_lens_diameter_mm == 56
-        assert info.objective_thread_pitch == "0.75"
 
         aps = await attachment_point_crud.list_for_augmented_part(db, part.id)
         by_label = {}