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NAS333CpA4 Phillips Screw Flush

Packaged Items
SinglePack of 10
ThreadGripLengthPart Number
10-320.1250.531NAS333CPA4

Overview

Material - Alloy Steel (8740)
Heat Treat - 160,000 - 180,000 PSI
Finish - Cadmium Per QQ-P-416 Type II
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Q&A

Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the countersink angle for flush phillips screws like part number NAS333CPA6? and do you sell the proper countersink that would fit in a normal drill chuck?

The NAS333 machine screws have a 100* countersink. The countersink tools we offer have 1/4-28 threads and commonly used with a microstop cage. You can purchase a drill extension like part # 12-01535, which has female 1/4-28 threads, and be able to use a normal drill chuck with these countersinks. You can view these parts on our web site if you search "countersink cutter" and "drill extension".

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