WebMay 26, 2016 · Grade 8 bolts are a heat treated alloy steel that are hardened more than the Grade 5. Thus, they are stronger and can be used in more demanding situations. Grade 8 bolts have 6 evenly spaced radial lines. Grade 8 bolts have a tensile strength of 150,000 PSI. Allen head bolts can easily be identified as they require the use of an allen wrench. WebJun 30, 2009 · Razorman, A grade 5 bolt will have 3 lines on it's head, it will also read JH on the head. A grade 8 bolt has 6 lines on it's head and they are usually a different color than silver. I have seen two different brands of grade 8 bolts one brand is gold colored and the other brand is almost black. Quote Razorman Banned 634 Certified Captain of Crush
hardware - grade 5 bolts not marked if galvanized? - Home …
WebAug 8, 2012 · Grade 5 bolts have 3 marks or lines on the head that are in the shape of a “Y”. Grade 8 bolts have 6 marks on the head. Second, the different grades have a meaning to them. It tells you how strong the fastener is. There are different types of strengths listed for each grade. Proof strength (about 90% of yield), ultimate tensile strength ... WebJan 9, 2024 · SAE Grade 5, Metric 8.8 These bolts are medium carbon steel, that has been quenched and tempered for strength. They feature three radial lines on the head. Metric … harrow victoria
Bolts Selection Guide: Types, Features, Applications
WebJun 9, 2024 · SAE Grade 5 Have three radial lines engraved Medium level strength Comprised of medium quenched and tempered carbon steel SAE Grade 8 Have six … WebMar 23, 2024 · From left, Grade 2, Grade 5 and Grade 8. A Grade 2 bolt head doesn’t have markings as a rule. Grade 5 has three radial hash marks. Grade 8 has six radial hash marks. Generally, the harder a bolt is, the more brittle it is. Grade 8 is what you want for all automotive engine, driveline and chassis applications. WebGrade 5 Bolts are equivalent to Metric 8.8 bolts, so when finding the right bolt, be sure to match the grades on the bolts being used. Grade 5 bolts can often be identified by the 3 marks on the head. Each Grade 5 bolt … harrow vertaling