Browse Topic: Screws

Items (529)
Find
Methodology and application on load monitoring using strain-gauged bolts in brake calipers2022-01-112103/29/2022
As technology evolves, the number of sensors and available data on vehicles grow exponentially. In this context, it is essential to use sensors for monitoring key components, increasing safety and reliability, and gathering data useful for mechanical dimensioning and control systems. This paper presents an application of strain-gauged bolts brake calipers fixation of two electric vehicles. With this approach it was possible to obtain the loads applied to the brake pads and correlate them with braking behavior, therefore gaining insights on braking conditions and system state. The goal of the study is analyzing the strengths and limitations of the method and proposing developments to deploy it in real applications. This topic is particularly important and novel for electric vehicles, where powertrains can create positive and negative torques and generate complex interactions with braking system. Strain-gauges are a long-known technology applied in many fields, and its usage in bolts and
de Carvalho Pinheiro, Henrique, Sisca, Lorenzo, Carello, Massimiliana, Ferraris, Alessandro, Airale, Andrea Giancarlo, Falossi, Marco, Carlevaris, Alberto
SCREW, MACHINE, 100° CSK, FLAT HEAD, OFFSET CRUCIFORM RECESS, FULL SHANK, UNS S66286, MJ THREAD, METRICMA4189A07/12/2021
SCOPE IS UNAVAILABLE.
E-25 General Standards for Aerospace and Propulsion Systems
TORQUE-TENSION TESTING AND EVALUATION OF FASTENER FINISHESUSCAR11-2 (Current)11/19/2020
This standard provides a test method for determining the torque-tension relationship of a fastener finish as applied to a surrogate screw for the purpose of measuring the frictional characteristic of the fastener finish. The results obtained by this test shall be used as a process control attribute of the fastener finish and shall not be utilized for specific applications.
USCAR
Nuts, Self-Locking, Steel High Strength, All Metal 450 °F Use, UN and UNJ Thread FormAS7252A (Current)11/11/2020
This specification covers all metal, self-locking wrenching nuts, plate nuts, shank nuts, and gang channel nuts made of a carbon or low alloy steel.
E-25 General Standards for Aerospace and Propulsion Systems
Bolts and Screws, Steel, UNS S66286 Tensile Strength 130 ksi, Procurement SpecificationAS7477H-TEST-REC (Historical)08/26/2020
This document covers bolts and screws made from a corrosion and heat resistant, precipitation hardenable, iron base alloy of the type identified under the Unified Numbering System as UNS S66286.
E-25 General Standards for Aerospace and Propulsion Systems
SCREW, MACHINE - HEXAGON HEAD, DRILLED 1 HOLE, PD SHANK, CRES AMS5731(UNS S66286), .1640-36 UNJF-3AAS3106B (Current)08/26/2020
E-25 General Standards for Aerospace and Propulsion Systems
Bolts and Screws, Steel, UNS S66286 Tensile Strength 130 ksi, Procurement SpecificationAS7477H (Historical)08/26/2020
This document covers bolts and screws made from a corrosion and heat resistant, precipitation hardenable, iron base alloy of the type identified under the Unified Numbering System as UNS S66286.
E-25 General Standards for Aerospace and Propulsion Systems
Thermal Considerations for IncubatorsTBMG-3641904/01/2020
Incubators, used for cell and tissue cultivation in hospital and laboratory settings, grow and maintain cell and tissue samples under controlled conditions for hours, weeks, or even months. They create the ideal environment for cell and tissue sample growth by maintaining optimum levels for temperature, humidity, carbon dioxide, and oxygen. Precision control of these factors enables research and experimental work in industries where cell culture is vital.
Numbering System for TapsJ2123_201910 (Current)10/09/2019
This SAE Recommended Practice provides a systematic method for the identification of ground thread taps for inch sizes up to 9.999 in with a Maximum Thread-per-Inch of 99.9, and Metric sizes up to 99.9 mm with a Maximum pitch of 9.99 mm. It is intended to assist in the cataloging and supplying of these tools. It is not intended for ACME, Buttress, or similar type thread forms. NOTE 1— Caution must be taken when assigning codes to prevent specifying taps that cannot be physically or economically manufactured. NOTE 2— The Code Number coming from the manufacturer MUST reflect the actual tool construction. NOTE 3— In particular without limitation, SAE disclaims all responsibility for the accuracy or completeness of information contained within this report if the standards of this report are retrieved, combined, or used in connection with any software.
Motor Vehicle Council
Numbering System for Single Diameter and Taper ReamersJ2124_201910 (Current)10/09/2019
This SAE Recommended Practice provides a systematic method for the identification of single diameter and taper reamers. It is intended to assist in the cataloging and supplying of these tools. NOTE 1— Caution must be taken when assigning codes for designators to prevent specifying reamers that cannot be physically or economically manufactured. NOTE 2— The Code Number coming from the manufacturer MUST reflect the actual tool construction. NOTE 3— In particular without limitation, SAE disclaims all responsibility for the accuracy or completeness of information contained within this report if the standards of this report are retrieved, combined, or used in connection with any software.
Motor Vehicle Council
Deployable Emergency Shutoff Device Blocks High-Velocity Fluid FlowsTBMG-3493108/01/2019
NASA's Marshall Space Flight Center has developed a device and method for blocking the flow of fluid from an open pipe. The device plugs, controls, and meters the flow of gases and liquids. Anchored with friction fittings, spikes, or explosively activated fasteners, the device is well-suited for harsh environments and high fluid velocities and pressures. With the addition of instrumentation, it can also be used as a variable-area flow metering valve that can be set based upon flow conditions. With robotic additions, it can be configured to crawl into a pipe and then anchor and activate itself to block or control fluid flow.
Shaft Nut and Keywasher Installation Dimensions forAS1495B (Current)07/29/2019
The purpose of this Standard is to provide installation dimensions for shaft nuts and their companion keywasher. The Standard type typically shown on MS9951 and MS9952, but is also suitable for parts which are dimensionally equivalent.
E-25 General Standards for Aerospace and Propulsion Systems
Insert, Screw Thread, Helical Coil Metric Series, Standard Assembly Dimensions forMA1567C (Current)07/01/2019
This SAE Metric Aerospace Standard (MA) provides for helical coil screw thread inserts, both free running and self-locking, installation screw thread dimensional data and guidance on insert length selection. The document also provides formulas for determining requirements when non standard insert lengths are necessary.
E-25 General Standards for Aerospace and Propulsion Systems
Undercuts for Straight Screw Threads - MetricAS1508A (Current)06/19/2019
This standard provides recommended dimensional data for screw thread undercuts for straight 'MJ' metric screw threads in accordance with AS1370.
E-25 General Standards for Aerospace and Propulsion Systems
Study of Wrenching Engagement on AS870C Double Hexagon (12 Point) FastenersAIR1936A (Current)05/10/2019
This study addresses the adequacy of sockets, wrenches, and torque adapters conforming to AS954 to wrench 12 point fasteners with wrenching configurations conforming to AS870C. Reported wrenching problems with smaller sizes are investigated through examining the combined tolerances on the fasteners and wrenches, conducting torque testing on typical high strength lock nuts. Possible solutions to correct these wrenching problems are presented.
EG-1B Hand Tools Committee
Areas for Calculating Stress or Load Values for Metric MJ Internally Threaded FastenersMA4284A (Current)05/03/2019
Areas for the standard metric series of threaded diameter-pitch combinations for aerospace internally threaded fasteners are established for the following conditions: a Area for shear stress or load in fastener thread b Area for ultimate tensile stress or load in thread
E-25 General Standards for Aerospace and Propulsion Systems
High Strength Elevated Temperature Bolting PracticeARP700C (Current)05/03/2019
This SAE Aerospace Recommended Practice (ARP) provides general information on the design and installation of threaded fasteners in high strength and high temperature applications in propulsion systems. Some of the more common definitions of fastener terminology are also provided.
E-25 General Standards for Aerospace and Propulsion Systems
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, CRES UNS 266286, 130 KSI MIN, .1640-36 UNJF-3AAS9564B (Historical)04/05/2019
E-25 General Standards for Aerospace and Propulsion Systems
Flaring (Swaging) and Removal of Shank NutsARP4848A (Current)03/18/2019
To specify the approved method of flaring the shank of self-locking shank nuts, and to provide the preferred method for removal of damaged nut.
E-25 General Standards for Aerospace and Propulsion Systems
Grain Flow Pattern for Bolts and ScrewsUSCAR8-4 (Current)03/14/2019
This specification covers the grain flow pattern requirements in headed bolts, screws, and studs. The heading practice in the manufacture of the bolt, screw, or stud sets the grain flow pattern, but it is also greatly influenced by the fastener design.
USCAR
Bolts, Screws, and Studs, Geometric Control RequirementsAS3063C (Current)02/26/2019
This SAE Aerospace Standard (AS) establishes the geometric control requirements for bolts, screws, and studs where worded notes and symbolized notes are used for straightness, concentricity, squareness, and runout.
E-25 General Standards for Aerospace and Propulsion Systems
Bolts, Screws, and Studs, Screw Thread RequirementsAS3062D (Current)02/13/2019
E-25 General Standards for Aerospace and Propulsion Systems
Implementing Anti-Rotational Guidance for Stepper Motor Linear ActuatorsTBMG-3371502/01/2019
Integrating lead screws with stepper motors is a simple and cost-effective method for getting precise linear motion. But achieving that precision requires anti-rotational guidance, which must either be added externally by the user or designed in by the manufacturer. Determining which option makes sense for you requires an analysis of your need for a guidance system and weighing the advantages and disadvantages of each approach.
TS108 Manufacturing Specification for Studs, Bolts and Screws in BS S159 Material 1100 MPa (159,000 lbf/in² ) Tensile at Room Temperature (for which Forging Is Optional and Qualification not a Requirement)TS108-6 (Current)01/01/2019
No scope available.
Engine and Airframe Technical Standards Committee (TSC)
Areas for Calculating Stress or Load Values for Metric MJ Internally Threaded FastenersMA4284 (Historical)08/23/2018
Areas for the standard metric series of threaded diameter-pitch combinations for aerospace internally threaded fasteners are established for the following conditions: a Area for shear stress or load in fastener thread b Area for ultimate tensile stress or load in thread
E-25 General Standards for Aerospace and Propulsion Systems
Selected Aerospace Diameter Pitch Combinations of Metric 60° Screw Threads for Nuts and BoltsAS1337A (Current)08/23/2018
This Aerospace Standard establishes the preferred diameter-pitch combinations of ISO metric 60° screw threads recommended for use in the aerospace industry for metric module bolts and nuts.
E-25 General Standards for Aerospace and Propulsion Systems
Studs and Inserts, Locked In, Self-Broaching Keys - Hole Dimensions and Installation RequirementsAS4724 (Current)08/23/2018
This specification establishes the procedure for installing hardened key types studs and inserts, eliminating the need for broaching key slots. It also defines the hole preparation necessary to install the studs and inserts.
E-25 General Standards for Aerospace and Propulsion Systems
High Strength Elevated Temperature Bolting PracticeARP700B (Historical)08/23/2018
This SAE Aerospace Recommended Practice (ARP) provides general information on the design and installation of threaded fasteners in high strength and high temperature applications in propulsion systems. Some of the more common definitions of fastener terminology are also provided.
E-25 General Standards for Aerospace and Propulsion Systems
Insert, Screw Thread, Helical Coil Metric Series, Standard Assembly Dimensions ForMA1567B (Historical)08/23/2018
This SAE Metric Aerospace Standard (MA) provides for helical coil screw thread inserts, both free running and self-locking, installation screw thread dimensional data and guidance on insert length selection. The document also provides formulas for determining requirements when non standard insert lengths are necessary.
E-25 General Standards for Aerospace and Propulsion Systems
Undercuts for Straight Screw Threads - MetricMA1508 (Current)08/23/2018
This SAE Aerospace Standard (MA) provides recommended dimensional data for screw thread undercuts for straight “MJ” metric screw threads in accordance with MA1370.
E-25 General Standards for Aerospace and Propulsion Systems
Areas for Calculating Stress or Load Values for Externally and Internally Threaded FastenersAS5054A (Current)08/23/2018
This standard specifies the areas to be used in calculating stress or load values to be used in externally and internally threaded fastener procurement specifications for bolts, screws, nuts, and studs and for the information of designers.
E-25 General Standards for Aerospace and Propulsion Systems
Flaring (Swaging) and Removal of Shank NutsARP4848 (Historical)08/23/2018
To specify the approved method of flaring the shank of self-locking shank nuts, and to provide the preferred method for removal of damaged nut.
E-25 General Standards for Aerospace and Propulsion Systems
Bolts, Screws and Studs, Screw Thread RequirementsAS3062C (Historical)08/23/2018
E-25 General Standards for Aerospace and Propulsion Systems
GASKET, FUSELAGE LIGHT – COVER SCREWAS8991A (Current)08/09/2018
E-25 General Standards for Aerospace and Propulsion Systems
Hole Sizes, Recommended for Metric Fasteners on Propulsion EquipmentMAP1753B (Current)08/09/2018
To establish recommended hole sizes for use with protruding head metric threaded fasteners primarily used on propulsion equipment, and provide the recommended positional tolerance for use with these holes.
E-25 General Standards for Aerospace and Propulsion Systems
DRIVE – TYPE XX ENGINE ACCESSORY - DESIGN STANDARD FORAS20010A (Current)07/16/2018
E-25 General Standards for Aerospace and Propulsion Systems
DRIVE – TYPE XV ENGINE ACCESSORY - DESIGN STANDARD FORAS20005A (Current)07/16/2018
E-25 General Standards for Aerospace and Propulsion Systems
INSERT - THIN WALL, LONG, SELF-LOCKING, 1025 °F, SILVER PLATED ON INTERNAL SURFACES ONLY, UNS N07718, UNJ THREADAS3505C (Current)05/07/2018
E-25 General Standards for Aerospace and Propulsion Systems
Mechanical Strength and Failure Mode of Flow Drill Screw Joints in Coach-Peel Specimens of Aluminum 6082-T6 Sheets of Different Thicknesses and Processing Conditions2018-01-011604/03/2018
The mechanical strength and failure mode of flow drill screw (FDS) joints in coach-peel specimens of aluminum 6082-T6 sheets of three different thicknesses of 2.5, 2.8 and 3.0 mm and three different processing conditions under quasi-static loading conditions are investigated by experiments. The experimental results indicate that the mechanical strength and failure mode of FDS joints in coach-peel specimens are affected by the specimen thickness, clearance hole and stripping. The maximum load of a coach-peel specimen with an FDS joint with clearance hole increases as the thickness increases. For each of the thickness groups of 2.5, 2.8 and 3.0 mm, the maximum load of a coach-peel specimen with an FDS joint without clearance hole is lower than that with clearance hole. For the thickness group of 2.8 mm, the maximum load of a coach-peel specimen with a stripped FDS joint with clearance hole is lower than those of non-stripped ones with and without clearance hole. The FDS joints in coach
Huang, Chien-Po, Chen, Wei-Ning, Sung, Shin-Jang, Pan, Jwo
Aerospace Selected Diameter-Pitch Combinations of Metric 60° Screw Threads for Shaft or Bearing Retaining Screw ThreadsMA1421A (Current)02/12/2018
This SAE Aerospace Standard (MA) establishes the diameter-pitch combinations of ISO metric 60° screw threads recommended for use in the aerospace industry for metric module shaft or bearing retaining screw threads.
E-25 General Standards for Aerospace and Propulsion Systems
Screw Thread Form, American National, Modified (National Round - NR)AS82C (Current)01/29/2018
This SAE Aerospace Standard (AS) defines an external thread with a rounded root radius based on a minimum root radius of .108 × Pitch.
E-25 General Standards for Aerospace and Propulsion Systems
Orthopedics: Springs Provide Precision, CleanabilityTBMG-2813401/01/2018
The Design and Evaluation of EMB Actuator Scheme2017-01-250909/17/2017
Electromechanical Braking System (EMB) stops the wheel by motor and related enforce mechanism to drive braking pads to clamp the friction plate. It is compact in sized as well as faster in response, which solves the issue of potential leakage and slows response of traditional hydraulic brake system. The institutions at home and abroad have put forward all kinds of new structural schemes of EMB. At present, there are various EMB structural schemes, but the analysis and evaluation of these schemes are relatively few. In this paper, on the basis of a large number of research, the EMB actuator is modular decomposed according to function ,then the parametric 3D model library of each function module is established. According to brake requirements of the target vehicle, a development platform is set up to match EMB actuator structure scheme quickly. Moreover, the analysis and evaluation of several typical schemes are accomplished by analytic hierarchy process, providing reference for
Zhuo, Guirong, Xue, Ruonan, Zhang, Subin, Wu, Cheng, Xiong, Kun
Mechanical and Material Requirements for Steel NutsJ995_201707 (Current)07/20/2017
This SAE Standard covers the mechanical and material requirements for three grades of steel nuts suitable for use in automotive and related engineering applications, in sizes 1/4 to 1-1/2 inches, inclusive, and with dimensions conforming with the requirements of the latest issue of SAE J482 or ASME B18.2.2, except for machine screw nuts which are not covered in this standard. This document does not include limits for surface discontinuities. Where usage requires such control, limits may be specified separately. For sizes 1/4 through 1 inch, this may be done by the statement: “Surface discontinuities shall not exceed the limits specified in ASTM F812/F812M.”
Fasteners Committee
Torque Recommendations for Attaching Electrical Wiring Devices to Terminal Boards or Blocks, Studs, Posts, etc.ARP1928A (Historical)06/12/2017
AE-8C2 Terminating Devices and Tooling Committee
SYNCHRO CONTROL TRANSMITTER, TYPE 31CX6aAS20708/139B (Current)05/22/2017
AE-7A Generators and Controls Motors and Magnetic Devices
Designing Stronger ConcreteTBMG-2666104/01/2017
Plasticity at small scales boosts concrete's utility as the world's most-used material by letting it constantly adjust to stress, decades or centuries after hardening. To find out why, Rice University researchers performed an atom-level computer analysis of tobermorite, a naturally occurring crystalline analog to the calcium-silicate-hydrate (C-S-H) that makes up cement, which in turn holds concrete together. By understanding the internal structure of tobermorite, they hope to make concrete stronger, tougher, and better able to deform without cracking under stress.
Avoiding Safety Scandals by Controlling the Risk of Material Changes2017-01-037303/28/2017
Achieving functional safety in mechatronic systems with growing product functionality is a major challenge in systems engineering. Following the current discussion, this challenge is mostly allocated to electronics and software development. For most of the scenarios this focus is feasible. Product design - the construction of the product - defines the properties and the appearance of the product by shape, material and assembly. So, the product design is often not under control of the safety management system. A hazardous deviation of part shape can be easily identified after the parts product or at least at its mounting. A wrong assembly is controlled by assembly documentation or data (e.g. screw torques) and identified at end of assembly line checks. The identification of a hazardous material choice depends on the product material class. Product materials can be separated into two classes: passive or active materials. Passive materials (e.g. car body) can be distinguished in as
Koark, Fabian Jorg Uwe, Beul, Christian
Push-On Spring Nuts Inch Series - General SpecificationsJ892_201611 (Current)11/23/2016
Included herein are general, dimensional, and performance specifications for those types, styles, and sizes of steel stamped Push-On Spring Nuts recognized as SAE standard. These nuts are intended for general use where the engagement on the mating metal or plastic studs and in some cases screw or bolt threads is considered adequate for the fastening joint application. It should be noted that Push-On Spring Nuts having other characteristics and configurations are available and manufacturers should be consulted. For the metric equivalent of this document, see SAE J892M.
Fasteners Committee
Push-On Spring Nuts Metric Series - General SpecificationsJ892M_201611 (Current)11/21/2016
Included herein are general, dimensional, and performance specifications for those types, styles, and sizes of steel stamped Push-On Spring Nuts recognized as SAE standard. These nuts are intended for general use where the engagement on the mating metal or plastic studs and in some cases screw bolt threads is considered adequate for the fastening joint application. It should be noted that Push-On Spring Nuts having other characteristics and configurations are available and manufacturers should be consulted. For the inch equivalent of this document, see SAE J892.
Fasteners Committee
Items per page:
1 – 50 of 529