General Specification - GotsToGo

JPL Spec ES504255 IGeneral SpecificationCODE IDENT NO. 23835 SPEC NO. ES504255, REV IISSUE DATE 2/9/99 SUPERSEDING ES504255 HDATED 6 JANUARY 1999 torque REQUIREMENTSMECHANICAL THREADED FASTENERS(SPACECRAFT STRUCTURE EQUIPMENT) General Specification FOR* Printed copies of this document may not be current and should not be used for officialpurposes. The current version is in the DMIE Information System at http://dmieJet Propulsion LaboratoryCalifornia Institute of TechnologyJPL Spec ES504255 IJPL Spec ES504255 IiTABLE OF National Form Stress , Screws and of Fasteners torque and Screw with Flush Head torque Fasteners Preloads for Bolts/Screws Installed Into Spec ES504255 torque Equipment and Nylon Screws and Coefficient Wrench Multiple Length and FOR Locking Spec ES504255 IiiiTABLE OF CONTENTS (cont'd) , Bolts/Screws, and Nuts at 80 Nuts and Anchor Nuts at 125 , at 160 ksi, Into Inserts Assembled in6061-T6 , at 190 ksi, Installed Into InsertsAssembled in 6061-T6 Aluminum , at 160 ksi, Into Invar andHigher Shear Strength Aluminum , at 190 ksi, Into Invar andHigher Shear Strength Aluminum , at 1

JPL Spec ES504255 I 3 1. SCOPE 1.1 Contents.This engineering specification defines the standard torque to be applied to threaded fasteners during spacecraft assembly.

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