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Self-Clinching Top Collar Lock Nuts
Description
Self-clinching top collar lock nuts provide a permanent, prevailing-torque locking thread in thin sheet materials. The top collar design improves retention in the panel, while the locking feature helps resist loosening under vibration and repeated service conditions.
Features
- Prevailing-torque locking thread for vibration resistance
- Permanent installation in thin sheet using standard pressing methods
- Top collar design for secure seating and retention
- Unified and Metric thread forms
- Steel (heat treated) and stainless steel options with common finishes
Technical Dimensions
| Thread Size | Type | Sheet Range | Material | Finish | Hole Diameter | A Max. | B Max. | C Max. | D Max. | CL to Edge Min. |
|---|---|---|---|---|---|---|---|---|---|---|
| #4-40 | Unified | 0.040–0.070 | Steel, Heat Treated | Passivated | 0.234 (+0.003 / -0.00) | 0.233 | 0.274 | 0.130 | 0.215 | 0.132 |
| #4-40 | Unified | 0.040–0.070 | Stainless Steel, 300 Series | Zinc Clear | 0.234 (+0.003 / -0.00) | 0.233 | 0.274 | 0.130 | 0.215 | 0.132 |
| #6-32 | Unified | 0.040–0.070 | Steel, Heat Treated | Passivated | 0.265 (+0.003 / -0.00) | 0.264 | 0.305 | 0.130 | 0.246 | 0.158 |
| #6-32 | Unified | 0.040–0.070 | Stainless Steel, 300 Series | Zinc Clear | 0.265 (+0.003 / -0.00) | 0.264 | 0.305 | 0.130 | 0.246 | 0.158 |
| #8-32 | Unified | 0.040–0.070 | Steel, Heat Treated | Passivated | 0.297 (+0.003 / -0.00) | 0.296 | 0.338 | 0.155 | 0.278 | 0.184 |
| #8-32 | Unified | 0.040–0.070 | Stainless Steel, 300 Series | Zinc Clear | 0.297 (+0.003 / -0.00) | 0.296 | 0.338 | 0.155 | 0.278 | 0.184 |
| #10-32 | Unified | 0.040–0.070 | Steel, Heat Treated | Passivated | 0.312 (+0.003 / -0.00) | 0.311 | 0.353 | 0.165 | 0.293 | 0.210 |
| #10-32 | Unified | 0.040–0.070 | Stainless Steel, 300 Series | Zinc Clear | 0.312 (+0.003 / -0.00) | 0.311 | 0.353 | 0.165 | 0.293 | 0.210 |
| M3 × 0.5 | Metric | 1.000–1.780 | Stainless Steel, 300 Series | Zinc Clear | 6.00 (+0.08 / -0.00) | 5.98 | 7.01 | 3.56 | 5.52 | 4.32 |
| M3 × 0.5 | Metric | 1.000–1.780 | Steel, Heat Treated | Passivated | 6.00 (+0.08 / -0.00) | 5.98 | 7.01 | 3.56 | 5.52 | 4.32 |
| M4 × 0.7 | Metric | 1.000–1.780 | Stainless Steel, 300 Series | Zinc Clear | 7.50 (+0.08 / -0.00) | 7.48 | 8.54 | 4.20 | 7.01 | 5.59 |
| M4 × 0.7 | Metric | 1.000–1.780 | Steel, Heat Treated | Passivated | 7.50 (+0.08 / -0.00) | 7.48 | 8.54 | 4.20 | 7.01 | 5.59 |
| M5 × 0.8 | Metric | 1.000–1.780 | Stainless Steel, 300 Series | Zinc Clear | 8.00 (+0.08 / -0.00) | 7.98 | 9.00 | 4.45 | 7.52 | 6.35 |
| M5 × 0.8 | Metric | 1.000–1.780 | Steel, Heat Treated | Passivated | 8.00 (+0.08 / -0.00) | 7.98 | 9.00 | 4.45 | 7.52 | 6.35 |
Note: Dimensions are shown as provided. Unified items are in inches; Metric items are in millimetres.
