Sleeves - Square Hole - Plain - Hardened

Sleeves -> Square Hole -> Plain -> Hardened

There are 6 products in the sub-categories of Sleeves - Square Hole - Plain - Hardened. Browse the Sleeves - Square Hole - Plain - Hardened products table.

Category Details

A selection of Hardened Plain Square Hole Sleeves. Square and concentric to 0.076mm (0.003in). Pre-hardened to Rockwell 23-30C.

  • Precisely machined, round outer surface and a uniform, precisely square-shaped hole completely through its center.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Sleeves - Square Hole - Plain - Hardened category on the Small Parts & Bearings online store.
Nominal Square Size Outside Diameter (C) Length (B) Actual Square Size (A) Indicative
Image
Square Hole Sleeves - 7.938x15.875x57.15 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
7.938
mm
+/- 0.0254
(Equiv. 0.313 in.)
Outside Diameter (C)
15.875
mm
Length (B)
57.150
mm
Actual Square Size (A)
8.052
mm
Square Hole Sleeves - 7.938x15.875x57.15 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0794-1588-05715-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$61.41 AUD
$73.69 AUD $61.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Nominal Square Size Outside Diameter (C) Length (B) Actual Square Size (A) Indicative
Image
Square Hole Sleeves - 7.938x15.875x57.15 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
7.938
mm
+/- 0.0254
(Equiv. 0.313 in.)
Outside Diameter (C)
15.875
mm
Length (B)
57.150
mm
Actual Square Size (A)
8.052
mm
Square Hole Sleeves - 7.938x15.875x57.15 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0794-1588-05715-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$61.41 AUD
$73.69 AUD $61.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 11.111x20.638x66.675 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
11.111
mm
+/- 0.0254
(Equiv. 0.437 in.)
Outside Diameter (C)
20.638
mm
Length (B)
66.675
mm
Actual Square Size (A)
11.201
mm
Square Hole Sleeves - 11.111x20.638x66.675 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1111-2064-06668-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$164.68 AUD
$197.62 AUD $164.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 11.111x20.638x66.675 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
11.111
mm
+/- 0.0254
(Equiv. 0.437 in.)
Outside Diameter (C)
20.638
mm
Length (B)
66.675
mm
Actual Square Size (A)
11.201
mm
Square Hole Sleeves - 11.111x20.638x66.675 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1111-2064-06668-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$164.68 AUD
$197.62 AUD $164.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 12.7x20.223x69.85 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
12.700
mm
+/- 0.0254
(Equiv. 0.5 in.)
Outside Diameter (C)
20.223
mm
Length (B)
69.850
mm
Actual Square Size (A)
12.827
mm
Square Hole Sleeves - 12.7x20.223x69.85 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1270-2022-06985-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$99.14 AUD
$118.96 AUD $99.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 12.7x20.223x69.85 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
12.700
mm
+/- 0.0254
(Equiv. 0.5 in.)
Outside Diameter (C)
20.223
mm
Length (B)
69.850
mm
Actual Square Size (A)
12.827
mm
Square Hole Sleeves - 12.7x20.223x69.85 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1270-2022-06985-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$99.14 AUD
$118.96 AUD $99.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 15.875x28.575x82.55 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
15.875
mm
+/- 0.0254
(Equiv. 0.625 in.)
Outside Diameter (C)
28.575
mm
Length (B)
82.550
mm
Actual Square Size (A)
16.002
mm
Square Hole Sleeves - 15.875x28.575x82.55 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1600-2858-08255-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$134.68 AUD
$161.62 AUD $134.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 15.875x28.575x82.55 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
15.875
mm
+/- 0.0254
(Equiv. 0.625 in.)
Outside Diameter (C)
28.575
mm
Length (B)
82.550
mm
Actual Square Size (A)
16.002
mm
Square Hole Sleeves - 15.875x28.575x82.55 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1600-2858-08255-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$134.68 AUD
$161.62 AUD $134.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 22.225x38.1x101.6 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
22.225
mm
+/- 0.0254
(Equiv. 0.875 in.)
Outside Diameter (C)
38.100
mm
Length (B)
101.600
mm
Actual Square Size (A)
22.352
mm
Square Hole Sleeves - 22.225x38.1x101.6 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-2225-3810-10160-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$271.14 AUD
$325.36 AUD $271.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 22.225x38.1x101.6 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
22.225
mm
+/- 0.0254
(Equiv. 0.875 in.)
Outside Diameter (C)
38.100
mm
Length (B)
101.600
mm
Actual Square Size (A)
22.352
mm
Square Hole Sleeves - 22.225x38.1x101.6 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-2225-3810-10160-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$271.14 AUD
$325.36 AUD $271.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 31.75x57.15x127 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
31.750
mm
+/- 0.0254
(Equiv. 1.25 in.)
Outside Diameter (C)
57.150
mm
Length (B)
127.000
mm
Actual Square Size (A)
32.004
mm
Square Hole Sleeves - 31.75x57.15x127 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-3175-5715-12700-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$324.41 AUD
$389.29 AUD $324.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 31.75x57.15x127 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
31.750
mm
+/- 0.0254
(Equiv. 1.25 in.)
Outside Diameter (C)
57.150
mm
Length (B)
127.000
mm
Actual Square Size (A)
32.004
mm
Square Hole Sleeves - 31.75x57.15x127 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-3175-5715-12700-H (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 30, 2026
$324.41 AUD
$389.29 AUD $324.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.