Additional information
| Material | |
|---|---|
| Head Type | |
| Thread Type | |
| Recess Type | |
| Plating/Finish | |
| RoHS/REACH Compliance |
Washer Head Screw, Alloy Steel
This is an alloy steel washer head screw with machine threads, Phillips recess and cadmium plating. The screw head is colored with a thermosetting coating.
Please see the data sheet for more information and size options.
Description
This is an alloy steel washer head screw with machine threads, Phillips recess and cadmium plating. The screw head is colored with a thermosetting coating.
Please see detailed specifications for more information and size options.
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Detailed Specifications
FEATURES:
1. Screws are furnished with pre-colored heads to match panels and equipment. The coating material used in combination with the relatively hard screw heads is resistant to abrasion and screwdriver damage. This feature virtually eliminates the need for touch-up painting after assembly.
2. Screw heads are formed by cold forging, followed by a heat treating process which increases the basic tensile strength of the material. The resultant high tensile strength thus eliminates burring and yield of the substrate under the coating material.
3. Screw heads are cleaned and prepared for maximum adhesion of the coating material. The thermosetting coating material is both abrasion and solvent resistant.
NOTES:
1. The screws listed in this series reflect high quality with emphasis on the forming of the cruciform recess to meet design specification.
2. Care should be exercised to assure that the screwdriver tools meet the same quality and design specification in order to eliminate mismating and subsequent damage to the drive recess and coating material.
3. The thread diameters and lengths listed in the table are NASM525 standard sizes. Inventory levels of these sizes may vary at any one time due to customer demands and lead time necessary for production.
SPECIFICATIONS:
1. Screws meet all requirements of NASM525.
2. Screw material is alloy steel per NASM525.
3. Screws are cadmium plated per AMS-QQ-P-416, Type II, Class 3 or zinc plated per ASTM B633, Fe/Zn 13, Type II, as per NASM525.
4. Threads are in conformance with FED-STD-H28/2, Federal Handbook for threads.
5. Thermosetting coating material is applied to screw head only. Threads are free of coating.
6. Screw head coating colors are matched to customer requirements. We recommend selection from FED-STD-595 whenever possible but we are also prepared to match customer-furnished color chips or samples.
7. Previous to NASM525, Revision 2 (released 30-JUN-2010), the nominal length (“L” dimension) did not include the end chamfer. Part inventory manufactured to previous revisions may be procured and used until stock is depleted. For further details, refer to Stake Fastener Co. drawing no. 9-83-0401-105.
