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Packaged Items
SinglePack of 10
LengthPart NumberThreadPart Number


All part numbers will follow this format: AN###. To further distinguish between the part numbers, you'll notice that a dash ("-") has been added, followed by some specific variation of more numbers. If there is an "A" after the dash, the part is cadmium plated, Type I, Class 3, with a drilled head. If there is NOT an "A" after the dash, the part is Cadmium plated, Type I.

AN500 (coarse thread) and AN501 (fine thread) slotted fillister head screws are fabricated from carbon steel. Tensile strength 55,000 PSI

AN502 (fine thread) and AN503 (coarse thread) drilled head, slotted fillister head screws are fabricated from steel meeting specification MIL-S-6050. Tensile strength 125,000 PSI. Cadmium plated, Type I Class 3.

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Exact replacement and high quality fastener for a 70 year old military Jeep starter. Highly recommend and will order again.

Roy H Verified Purchase


September 21, 2023

Good and much better than some of the bad hardware from the other places in the world.

Environmental P Verified Purchase


January 7, 2023

Great delivery and right product.

Barry B
May 13, 2021


Please note, Aircraft Spruce'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 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: Does AN502 have a 1/8 diameter specification?

We do not carry these in 1/8". It is not a very common size in aviation. The closest we have is a 6-32 threaded AN500 fillister head screw. A 6-32 threaded screw is approx. .138" diameter.

Q: What color is the CAD plating on the AN502-10-12 screws?

Silver CAD