Bolted Joints - Recommended Norms ? Bolted Joints - Recommended Norms ? MrFEMcredible (Aerospace) (OP) 18 Dec 14 12:09 What aerospace norms()or references do people use/recommend for detailed stressing of bolted joints ? Which are the most used in aerospace circles? Thank you Mr. F. RE: Bolted Joints - Recommended Norms ? rb1957 (Aerospace) 18 Dec 14 12:39 Bruhn, Niu, NACA, standard texts, any bolt text (aerospace bolts aren't especially "special") another day in paradise, or is paradise one day closer ? RE: Bolted Joints - Recommended Norms ? CoryPad (Materials) 18 Dec 14 15:48 FAQ725-600: What are good fastener references? Some specific to aerospace not included in the FAQ above: DOT/FAA/AR-MMPDS-01 MIL-HDBK-60 MIL-DTL-1222J NASA NSTS 08307 NASA MSFC-HDBK-2071 ECSS-E-HB-32-23 RE: Bolted Joints - Recommended Norms ? WKTaylor (Aeronautics) 18 Dec 14 23:19 In addition to what r1957 and CoryPad have mentioned. There are "best practices" that should be employed when installing any larger cluster-pattern of fasteners in primary or even lighter secondary structure. these practices ensure even settling of parts together resulting in best/optimum fastener load distributions and minimal structural distortion. IF structure is assembled without employing these "best practices" then really odd assembly problems will surface, or in-service premature failure are highly likely. These best practices are especially critical when assemblying structure with various type fasteners [solid/blind rivets, bolts/nuts, lock-bolts and/or Hi-Loks, blind-bolts, etc] and fay surface sealant. I haven't got time to note these specific practices, right now. Regards, Wil Taylor Trust Me! I'm an engineer! Trust - But Verify! We believe to be true what we prefer to be true. For those who believe, no proof is required; for those who cannot believe, no proof is possible. Unfortunately, in science what You 'believe' is irrelevant û "Orion"