Collection: Washers - Lock - External Tooth

Washers -> Lock -> External Tooth

There are 8 products in the sub-categories of Washers - Lock - External Tooth. Browse the Washers - Lock - External Tooth products table. To narrow down the selection, please choose a sub-category from the links below.

Category Details

This category includes various types of lock washers.
  • Lock washers are available in many different materials and types, including tabbed, split and toothed. An expanded range may be available on special order. Please enquire.
  • Designed to prevent nuts and bolts from loosening due to vibration or torque by creating tension and friction within the bolted joint, effectively securing the connection and preventing unwanted rotations.
  • Dimensions are nominal and may vary between batches.

Small Parts & Bearings

Additional resources:


A more comprehensive listing may be found in the Washers - Lock - External Tooth category on the MBA Minibearings main store.
Nominal Inside Diameter Outside Diameter Material Thickness (T) Indicative
Image
Lock Washers - 2x4.5x0.3 mm External Tooth Washer
Nominal Inside Diameter
2.00
mm

(Equiv. 0.079 in.)
Outside Diameter
4.5
mm

(Equiv. 0.177 in.)
Material Thickness (T)
0.30
mm

(Equiv. 0.012 in.)
Lock Washers - 2x4.5x0.3 mm
Material: Carbon Spring Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Deleted Item. Available while stocks last.
Part Number: W0020-LE-005-003-C (PK-10)
8 units (80 pcs) Available Now | Item Discontinued - Up to 8 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

8 units (80 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Nominal Inside Diameter Outside Diameter Material Thickness (T) Indicative
Image
Lock Washers - 2x4.5x0.3 mm External Tooth Washer
Nominal Inside Diameter
2.00
mm

(Equiv. 0.079 in.)
Outside Diameter
4.5
mm

(Equiv. 0.177 in.)
Material Thickness (T)
0.30
mm

(Equiv. 0.012 in.)
Lock Washers - 2x4.5x0.3 mm
Material: Carbon Spring Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Deleted Item. Available while stocks last.
Part Number: W0020-LE-005-003-C (PK-10)
8 units (80 pcs) Available Now | Item Discontinued - Up to 8 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 10 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

8 units (80 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 2.5x6.4x0.4 mm External Tooth Washer
Nominal Inside Diameter
2.50
mm

(Equiv. 0.098 in.)
Outside Diameter
6.4
mm

(Equiv. 0.252 in.)
Material Thickness (T)
0.40
mm

(Equiv. 0.016 in.)
Lock Washers - 2.5x6.4x0.4 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0025-LE-006-004-S4 (PK-50)
17 units (850 pcs) Available Now | Item Discontinued - Up to 17 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

17 units (850 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 2.5x6.4x0.4 mm External Tooth Washer
Nominal Inside Diameter
2.50
mm

(Equiv. 0.098 in.)
Outside Diameter
6.4
mm

(Equiv. 0.252 in.)
Material Thickness (T)
0.40
mm

(Equiv. 0.016 in.)
Lock Washers - 2.5x6.4x0.4 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0025-LE-006-004-S4 (PK-50)
17 units (850 pcs) Available Now | Item Discontinued - Up to 17 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

17 units (850 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 3x7.4x0.5 mm External Tooth Washer
Nominal Inside Diameter
3.00
mm

(Equiv. 0.118 in.)
Outside Diameter
7.4
mm

(Equiv. 0.291 in.)
Material Thickness (T)
0.50
mm

(Equiv. 0.02 in.)
Lock Washers - 3x7.4x0.5 mm
Material: Zinc Plated Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Part Number: W0030-LE-007-005-CZ (PK-50)
31 units (1550 pcs) Available Now | Further orders can be expected around Thu, Mar 12, 2026
Regular price $6.59 AUD
Regular price Sale price $6.59 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 31 available can be backordered.
Lock Washers - 3x7.4x0.5 mm External Tooth Washer
Nominal Inside Diameter
3.00
mm

(Equiv. 0.118 in.)
Outside Diameter
7.4
mm

(Equiv. 0.291 in.)
Material Thickness (T)
0.50
mm

(Equiv. 0.02 in.)
Lock Washers - 3x7.4x0.5 mm
Material: Zinc Plated Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Part Number: W0030-LE-007-005-CZ (PK-50)
31 units (1550 pcs) Available Now | Further orders can be expected around Thu, Mar 12, 2026
Regular price $6.59 AUD
Regular price Sale price $6.59 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

31 units (1550 pcs) Available Now. Backorder if more than 31.
Lock Washers - 4x9x0.6 mm External Tooth Washer
Nominal Inside Diameter
4.00
mm

(Equiv. 0.157 in.)
Outside Diameter
9
mm

(Equiv. 0.354 in.)
Material Thickness (T)
0.60
mm

(Equiv. 0.024 in.)
Lock Washers - 4x9x0.6 mm
Material: Zinc Plated Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Part Number: W0040-LE-009-006-CZ (PK-50)
80 units (4000 pcs) Available Now | Further orders can be expected around Thu, Mar 12, 2026
Regular price $3.50 AUD
Regular price $6.54 AUD Sale price $3.50 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 80 available can be backordered.
Lock Washers - 4x9x0.6 mm External Tooth Washer
Nominal Inside Diameter
4.00
mm

(Equiv. 0.157 in.)
Outside Diameter
9
mm

(Equiv. 0.354 in.)
Material Thickness (T)
0.60
mm

(Equiv. 0.024 in.)
Lock Washers - 4x9x0.6 mm
Material: Zinc Plated Steel   
Category: Washers - Lock - External Tooth - Spring Steel
Part Number: W0040-LE-009-006-CZ (PK-50)
80 units (4000 pcs) Available Now | Further orders can be expected around Thu, Mar 12, 2026
Regular price $3.50 AUD
Regular price $6.54 AUD Sale price $3.50 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

80 units (4000 pcs) Available Now. Backorder if more than 80.
Lock Washers - 4.17x9.5x0.5 mm External Tooth Washer
Nominal Inside Diameter
4.17
mm

(Equiv. 0.164 in.)
Outside Diameter
9.5
mm

(Equiv. 0.374 in.)
Material Thickness (T)
0.50
mm

(Equiv. 0.02 in.)
Lock Washers - 4.166x9.5x0.5 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0042-LE-010-005-S4 (PK-50)
5 units (250 pcs) Available Now | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

5 units (250 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 4.17x9.5x0.5 mm External Tooth Washer
Nominal Inside Diameter
4.17
mm

(Equiv. 0.164 in.)
Outside Diameter
9.5
mm

(Equiv. 0.374 in.)
Material Thickness (T)
0.50
mm

(Equiv. 0.02 in.)
Lock Washers - 4.166x9.5x0.5 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0042-LE-010-005-S4 (PK-50)
5 units (250 pcs) Available Now | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

5 units (250 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 5x10.5x0.7 mm External Tooth Washer
Nominal Inside Diameter
5.00
mm

(Equiv. 0.197 in.)
Outside Diameter
10.5
mm

(Equiv. 0.413 in.)
Material Thickness (T)
0.70
mm

(Equiv. 0.028 in.)
Lock Washers - 5x10.5x0.7 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0050-LE-011-007-S4 (PK-50)
7 units (350 pcs) Available Now | Item Discontinued - Up to 7 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

7 units (350 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 5x10.5x0.7 mm External Tooth Washer
Nominal Inside Diameter
5.00
mm

(Equiv. 0.197 in.)
Outside Diameter
10.5
mm

(Equiv. 0.413 in.)
Material Thickness (T)
0.70
mm

(Equiv. 0.028 in.)
Lock Washers - 5x10.5x0.7 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0050-LE-011-007-S4 (PK-50)
7 units (350 pcs) Available Now | Item Discontinued - Up to 7 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

7 units (350 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 6.35x12.7x0.6 mm External Tooth Washer
Nominal Inside Diameter
6.35
mm

(Equiv. 0.25 in.)
Outside Diameter
12.7
mm

(Equiv. 0.5 in.)
Material Thickness (T)
0.60
mm

(Equiv. 0.024 in.)
Lock Washers - 6.35x12.7x0.6 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0064-LE-013-006-S4 (PK-50)
5 units (250 pcs) Available Now | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $25.00 AUD
Regular price $47.50 AUD Sale price $25.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

5 units (250 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 6.35x12.7x0.6 mm External Tooth Washer
Nominal Inside Diameter
6.35
mm

(Equiv. 0.25 in.)
Outside Diameter
12.7
mm

(Equiv. 0.5 in.)
Material Thickness (T)
0.60
mm

(Equiv. 0.024 in.)
Lock Washers - 6.35x12.7x0.6 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0064-LE-013-006-S4 (PK-50)
5 units (250 pcs) Available Now | Item Discontinued - Up to 5 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $25.00 AUD
Regular price $47.50 AUD Sale price $25.00 AUD
Priced, Stocked and Sold Per 50 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

5 units (250 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 20x32x1.4 mm External Tooth Washer
Nominal Inside Diameter
20.00
mm

(Equiv. 0.787 in.)
Outside Diameter
32
mm

(Equiv. 1.26 in.)
Material Thickness (T)
1.40
mm

(Equiv. 0.055 in.)
Lock Washers - 20x32x1.4 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0200-LE-032-014-S4 (PK-45)
1 pack (45 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 45 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (45 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Lock Washers - 20x32x1.4 mm External Tooth Washer
Nominal Inside Diameter
20.00
mm

(Equiv. 0.787 in.)
Outside Diameter
32
mm

(Equiv. 1.26 in.)
Material Thickness (T)
1.40
mm

(Equiv. 0.055 in.)
Lock Washers - 20x32x1.4 mm
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Washers - Lock - External Tooth - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: W0200-LE-032-014-S4 (PK-45)
1 pack (45 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Priced, Stocked and Sold Per 45 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (45 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.