Sleeves - Square Hole - Plain - Hardened

Sleeves -> Square Hole -> Plain -> Hardened

There are 10 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 - 6.35x14.288x50.8 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
6.350
mm
+/- 0.0254
(Equiv. 0.25 in.)
Outside Diameter (C)
14.288
mm
Length (B)
50.800
mm
Actual Square Size (A)
6.477
mm
Square Hole Sleeves - 6.35x14.288x50.8 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0635-1429-05080-H (Pack of 50)
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$2,953.86 AUD
$3,543.04 AUD $2,953.86 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

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Nominal Square Size Outside Diameter (C) Length (B) Actual Square Size (A) Indicative
Image
Square Hole Sleeves - 6.35x14.288x50.8 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
6.350
mm
+/- 0.0254
(Equiv. 0.25 in.)
Outside Diameter (C)
14.288
mm
Length (B)
50.800
mm
Actual Square Size (A)
6.477
mm
Square Hole Sleeves - 6.35x14.288x50.8 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0635-1429-05080-H (Pack of 50)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 13, 2026
$2,953.86 AUD
$3,543.04 AUD $2,953.86 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
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)
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$69.41 AUD
$81.69 AUD $69.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$69.41 AUD
$81.69 AUD $69.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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Square Hole Sleeves - 9.525x17.463x63.5 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
9.525
mm
+/- 0.0254
(Equiv. 0.375 in.)
Outside Diameter (C)
17.463
mm
Length (B)
63.500
mm
Actual Square Size (A)
9.652
mm
Square Hole Sleeves - 9.525x17.463x63.5 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0953-1746-06350-H (Each)
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Square Hole Sleeves - 9.525x17.463x63.5 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
9.525
mm
+/- 0.0254
(Equiv. 0.375 in.)
Outside Diameter (C)
17.463
mm
Length (B)
63.500
mm
Actual Square Size (A)
9.652
mm
Square Hole Sleeves - 9.525x17.463x63.5 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-0953-1746-06350-H (Each)
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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, Aug 13, 2026
$172.68 AUD
$205.62 AUD $172.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$172.68 AUD
$205.62 AUD $172.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$107.14 AUD
$126.96 AUD $107.14 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, Aug 13, 2026
$107.14 AUD
$126.96 AUD $107.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$142.68 AUD
$169.62 AUD $142.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$142.68 AUD
$169.62 AUD $142.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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Square Hole Sleeves - 19.05x33.338x101.6 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
19.050
mm
+/- 0.0254
(Equiv. 0.75 in.)
Outside Diameter (C)
33.338
mm
Length (B)
101.600
mm
Actual Square Size (A)
19.177
mm
Square Hole Sleeves - 19.05x33.338x101.6 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1905-3334-10160-H (Each)
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Square Hole Sleeves - 19.05x33.338x101.6 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
19.050
mm
+/- 0.0254
(Equiv. 0.75 in.)
Outside Diameter (C)
33.338
mm
Length (B)
101.600
mm
Actual Square Size (A)
19.177
mm
Square Hole Sleeves - 19.05x33.338x101.6 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-1905-3334-10160-H (Each)
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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, Aug 13, 2026
$279.14 AUD
$333.36 AUD $279.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

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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, Aug 13, 2026
$279.14 AUD
$333.36 AUD $279.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Square Hole Sleeves - 25.4x44.45x127 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
25.400
mm
+/- 0.0254
(Equiv. 1 in.)
Outside Diameter (C)
44.450
mm
Length (B)
127.000
mm
Actual Square Size (A)
25.603
mm
Square Hole Sleeves - 25.4x44.45x127 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-2540-4445-12700-H (Each)
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Square Hole Sleeves - 25.4x44.45x127 mm Plain - Pre-Hardened Steel Sleeve
Nominal Square Size
25.400
mm
+/- 0.0254
(Equiv. 1 in.)
Outside Diameter (C)
44.450
mm
Length (B)
127.000
mm
Actual Square Size (A)
25.603
mm
Square Hole Sleeves - 25.4x44.45x127 mm - Pre-Hardened Steel
Material: Pre-Hardened Steel   
Part Number: SLQ-2540-4445-12700-H (Each)
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Quantity Required

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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, Aug 13, 2026
$332.41 AUD
$397.29 AUD $332.41 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, Aug 13, 2026
$332.41 AUD
$397.29 AUD $332.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.