NAS1169C416 - Dimpled Aerospace Washer
National Aerospace Standard Part
Description: Dimpled Washer, Size 1/4"
Part Number: NAS1169C416
Product Overview
A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide an additional bearing area on the material being fastened. It may or may not have a flush flange feature.
The NAS1169C416 is a dimpled washer made from high-quality stainless steel, designed to meet stringent aerospace standards. This washer features a dimpled surface that helps to evenly distribute the load of a fastener across its surface area, reducing the risk of damage to the material being fastened. The dimple design also provides a locking action that prevents loosening due to vibrations, making it ideal for critical applications in aircraft assemblies.
Technical Specifications:
- Part Number: NAS1169C416
- Material: Stainless steel
- Dimensions: Specific size to fit standard aerospace bolts and fasteners
- Application: Used in high-stress areas of aircraft, providing secure fastening and resistance to vibration
Item Specification
| Detail | Characteristic | |
| Hole Diameter | 0.252 Inches Minimum and 0.282 Inches Maximum | |
| Outside Diameter | 0.745 Inches Minimum and 0.770 Inches Maximum | |
| Overall Height | 0.132 Inches Nominal | |
| Material Document and Classification | AMS 5732 ASSN STD Single Material Response Overall | |
| Material Thickness | 0.022 Inches Minimum and 0.028 Inches Maximum | |
| Minimum Tensile Strength | 160000 Pounds Per Square Inch (Psi) | |
| Recess Angle | 99.0 Degrees Minimum and 103.0 Degrees Maximum | |
| Recess Diameter | 0.507 Inches Minimum and 0.517 Inches Maximum | |
| Style Designator | Finishing | |
| Surface Treatment Document and Classification | QQ-P-35 Fed Spec Single Treatment Response Overall | |
| Surface Treatment | Passivate Overall | |
| Specification/Standard Data | Professional/Industrial Association Standard |