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| Gearbox Attaching Bolts https://ausmini.com/forums/viewtopic.php?f=2&t=97613 |
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| Author: | cooperess [ Thu Aug 09, 2018 5:24 pm ] |
| Post subject: | Gearbox Attaching Bolts |
Please advise shank length for HBZ412 & HZS408. I presume there are 6 of each bolt, correct me if I'm wrong. 11 have a spring washers, 1 has a collar and a flat washer. |
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| Author: | Hinesy1275 [ Sun Aug 12, 2018 2:40 pm ] |
| Post subject: | Re: Gearbox Attaching Bolts |
The block to gearbox casing mating has 2 x lengths in 1/4" thread. Generally in the case of BMC bolts & screws, the letters prefix refer to type, i.e. thread & finish. The (4) suffix numbers refer to diameter & length: The first 2 figures represent diameter in sixteenths of an inch; the second 2 figures refer to the length in eighths of an inch. In this case: HBZ412 is a UNF thread of zinc finish, 1/4" diameter ([0]4 x 1/16), 1 1/2" long (12 x 1/8). I'll let you work out the length of the second example... HZS (zinc-plated) bolts were threaded full-length. F |
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