Industry-leading fastener manufacturer ARP makes it easy to upgrade factory hardware with premium quality polished stainless steel bolts that come in handy 5-packs by size. In addition to large bolts that range from 1/2” to 1/4” in diameter, ARP offers #10-32, #10-24 and the new #8-32 sizes.
Manufactured in-house at ARP’s California facilities, the new #8-32 bolts feature 12-point heads and are available in ten .125” incremental sizes ranging from .375” to 1.500” underhead lengths. They are designed to be employed for a variety of tasks in a vehicle’s engine compartment, interior and elsewhere.
All of ARP accessory fasteners (polished stainless steel or black ox-ide finished 8740 chrome moly) are nominally rated at 180,000 psi tensile strength —fully 20% stronger than Grade 8 hardware. As an additional benefit, the stainless steel bolts are virtually impervious to the elements.
Details on the 5,500-plus fastener kits manufactured by ARP can be found online at www.ARP-bolts.com, while a free printed copy of the new 2025 catalog —which contains much important tech information— is available upon request. Personalized technical assistance can be obtained by calling 800-826-3045.
This story was originally published on February 20, 2025. 
