Star Lock Washer
PDM
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Features of Star Lock Washer
Internal-externaltooth Star Washers Title:
China Factory starlock washer stainless & 65 Mn Steel lock washer for shaft
The serrations of the Internal Tooth lock washer face towards the center hole, suitable for applications with low torque; The serrations of the External Tooth lock washer face outward, providing higher anti vibration performance; The user term 'Internal external tooth' may refer to such composite designs or double self-locking washers (such as double tooth structures) used for diverse installation scenarios.
Comparison of Material Characteristics
65Mn steel: a high-strength spring steel known for its excellent wear resistance and elasticity, suitable for heavy-duty industrial environments such as heavy machinery or automotive components, but requires surface treatment to prevent corrosion.
Stainless steel: such as 304 or 316 grade, providing excellent corrosion resistance, suitable for humid or chemically exposed environments (such as outdoor equipment or food processing), while maintaining good mechanical strength;

| Dimensions(mm) | ||||||
| d(mm) | d1(mm) | D±0.3mm | H±0.2mm | S±0.03mm | Numbers of Ribs | Tensile Strength (N) |
| 1.6mm | 1.23-1.46 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 2.0mm | 1.61-1.84 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 2.4mm | 2.02-2.25 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 3.0mm | 2.58-2.81 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 3.2mm | 2.78-3.01 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 4.0mm | 3.57-3.80 | 11.5mm | 1.3mm | 0.2mm | 5 | 400 |
| 4.8mm | 4.31-4.53 | 11.5mm | 1.3mm | 0.2mm | 6 | 400 |
| 5.0mm | 4.51-4.74 | 11.5mm | 1.3mm | 0.2mm | 6 | 400 |
| 6.0mm | 5.45-5.70 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 6.35mm | 5.83-6.08 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 7.0mm | 6.46-6.72 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 8.0mm | 7.40-7.66 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 9.0mm | 8.50-8.75 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 9.5mm | 9.00-9.26 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 10.0mm | 9.49-9.74 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 11.0mm | 10.50-10.76 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 12mm | 11.37-11.62 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 12.7mm | 12.10-12.36 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 13mm | 12.38-12.64 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 14mm | 13.40-13.66 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 15mm | 14.43-14.68 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 16mm | 15.28-15.53 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 17mm | 16.42-16.68 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 18mm | 17.34-17.62 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 19mm | 18.40-18.69 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 20mm | 19.30-19.63 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 21mm | 20.33-20.61 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 22mm | 21.37-21.65 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 23mm | 22.34-22.62 | 38.1mm | 3.0mm | 0.45mm | 9 | 3500 |
| 24mm | 23.33-23.66 | 41.3mm | 3.2mm | 0.50mm | 9 | 3850 |
| 25mm | 24.30-24.63 | 41.3mm | 3.2mm | 0.50mm | 9 | 3850 |
Core features of the product
The internal toothed washer (as described in the search results) is embedded in the bolt head through the teeth to reduce the risk of loosening;
Double Self Lock "design combines internal and external teeth to provide a dual locking effect, especially suitable for high vibration scenarios such as mechanical installation.
Compliant with international standards such as ANSI/ASME B 18.21.1, ensuring dimensional tolerances and load capacity, compatible with industrial applications.
Customization and procurement options:
Support low minimum order quantity (MOQ) customization, including size, tooth profile, and surface treatment (such as galvanizing or passivation), with flexible price range for bulk purchase.

Applicable scenarios:
heavy industrial equipment, oil and gas pipelines, automotive assembly, and building structures, prioritizing 65Mn steel to improve fatigue resistance; Stainless steel is used in corrosion sensitive fields such as medical or marine environments.
Selection guide:
Consider load requirements (65Mn steel for high torque), environmental factors (stainless steel preferred), and refer to supplier certifications (such as ISO) to ensure quality;
Features of Star Lock Washer
Internal-externaltooth Star Washers Title:
China Factory starlock washer stainless & 65 Mn Steel lock washer for shaft
The serrations of the Internal Tooth lock washer face towards the center hole, suitable for applications with low torque; The serrations of the External Tooth lock washer face outward, providing higher anti vibration performance; The user term 'Internal external tooth' may refer to such composite designs or double self-locking washers (such as double tooth structures) used for diverse installation scenarios.
Comparison of Material Characteristics
65Mn steel: a high-strength spring steel known for its excellent wear resistance and elasticity, suitable for heavy-duty industrial environments such as heavy machinery or automotive components, but requires surface treatment to prevent corrosion.
Stainless steel: such as 304 or 316 grade, providing excellent corrosion resistance, suitable for humid or chemically exposed environments (such as outdoor equipment or food processing), while maintaining good mechanical strength;

| Dimensions(mm) | ||||||
| d(mm) | d1(mm) | D±0.3mm | H±0.2mm | S±0.03mm | Numbers of Ribs | Tensile Strength (N) |
| 1.6mm | 1.23-1.46 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 2.0mm | 1.61-1.84 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 2.4mm | 2.02-2.25 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 3.0mm | 2.58-2.81 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 3.2mm | 2.78-3.01 | 9.7mm | 1.3mm | 0.2mm | 4 | 200 |
| 4.0mm | 3.57-3.80 | 11.5mm | 1.3mm | 0.2mm | 5 | 400 |
| 4.8mm | 4.31-4.53 | 11.5mm | 1.3mm | 0.2mm | 6 | 400 |
| 5.0mm | 4.51-4.74 | 11.5mm | 1.3mm | 0.2mm | 6 | 400 |
| 6.0mm | 5.45-5.70 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 6.35mm | 5.83-6.08 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 7.0mm | 6.46-6.72 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 8.0mm | 7.40-7.66 | 15.3mm | 1.3mm | 0.25mm | 6 | 800 |
| 9.0mm | 8.50-8.75 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 9.5mm | 9.00-9.26 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 10.0mm | 9.49-9.74 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 11.0mm | 10.50-10.76 | 18.4mm | 1.9mm | 0.30mm | 6 | 1000 |
| 12mm | 11.37-11.62 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 12.7mm | 12.10-12.36 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 13mm | 12.38-12.64 | 25mm | 2.3mm | 0.4mm | 6 | 2500 |
| 14mm | 13.40-13.66 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 15mm | 14.43-14.68 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 16mm | 15.28-15.53 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 17mm | 16.42-16.68 | 28.2mm | 2.3mm | 0.4mm | 6 | 2500 |
| 18mm | 17.34-17.62 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 19mm | 18.40-18.69 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 20mm | 19.30-19.63 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 21mm | 20.33-20.61 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 22mm | 21.37-21.65 | 36.5mm | 3.0mm | 0.4mm | 9 | 3500 |
| 23mm | 22.34-22.62 | 38.1mm | 3.0mm | 0.45mm | 9 | 3500 |
| 24mm | 23.33-23.66 | 41.3mm | 3.2mm | 0.50mm | 9 | 3850 |
| 25mm | 24.30-24.63 | 41.3mm | 3.2mm | 0.50mm | 9 | 3850 |
Core features of the product
The internal toothed washer (as described in the search results) is embedded in the bolt head through the teeth to reduce the risk of loosening;
Double Self Lock "design combines internal and external teeth to provide a dual locking effect, especially suitable for high vibration scenarios such as mechanical installation.
Compliant with international standards such as ANSI/ASME B 18.21.1, ensuring dimensional tolerances and load capacity, compatible with industrial applications.
Customization and procurement options:
Support low minimum order quantity (MOQ) customization, including size, tooth profile, and surface treatment (such as galvanizing or passivation), with flexible price range for bulk purchase.

Applicable scenarios:
heavy industrial equipment, oil and gas pipelines, automotive assembly, and building structures, prioritizing 65Mn steel to improve fatigue resistance; Stainless steel is used in corrosion sensitive fields such as medical or marine environments.
Selection guide:
Consider load requirements (65Mn steel for high torque), environmental factors (stainless steel preferred), and refer to supplier certifications (such as ISO) to ensure quality;
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