Scroll over to the LH side of the Home Page and look under RESEARCH & INFO for the TORQUE VALUE Chart listed and you will find all the info on how Bolt Heads are marked. THREE equal hash marks indicates GRADE 5. Works fine for a SHEAR BOLT. Use a 5/8-18 HEX HEAD shoulder bolt, lockwasher, and hex nut. A shoulder bolt has a partial non-threaded end under the head. Grade 2 is softer and also can work. Use on a brush hog or finish mower. Made to break away if obstruction is hit so you don't do damage to your gear box. Helps to also use with an ORC (Over Running Clutch). Bolt length only needs to be long enough to cover the washer and nut with 2 or 3 threads exposed. Longer does nothing. Brush hogging tip: always walk the area first to uncover any hidden objects that will obstruct damage gear box. Look for old stoves and fridges, cars, stumps, large rocks/boulders, Jimmy Hoffa, etc. Question is why are you breaking so many shear bolts???
5/8-18 X2-3/4 HEX HEAD BOLT, PARTIALLY THREADED (SHOUDLER) BOLT: https://www.mcmaster.com/products/screws/hex-head-screws~/medium-strength-grade-5-steel-hex-head-screws/thread-size~5-8-18/length~2-750/length~2-75/length~2-3-4/
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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