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Fundamentals of Threaded Fasteners

2019-04-15
Fastener experts believe that upwards of 95% of all fastener failures are the result of either the wrong fastener for the job or improper installation. Whether this shocking figure is accurate or not, it is irrefutable that threaded fasteners are poorly misunderstood by many in both the fastener and user communities. In October 1990 the USS Iwo Jima suffered a catastrophic steam valve accident minutes after leaving port following repairs to its steam plant. In one of the single most deadly events of Operation Desert Storm, ten of the eleven crewmen present in the engine compartment would lose their lives.
Standard

High and Low Crown (Blind, Acorn) Hex Nuts

2016-11-18
CURRENT
J483_201611
Included in this SAE Recommended Practice are complete general and dimensional data for the high and low types of crown nuts recognized as SAE Standard. These nuts are primarily intended for application in automotive and other ground-based motor vehicles and industrial equipment to provide an ornamental or protective closure over end of bolts, studs, or screws.
Standard

High and Low Crown (Blind, Acorn) Hex Nuts

2013-04-15
HISTORICAL
J483_201304
Included in this SAE Recommended Practice are complete general and dimensional data for the high and low types of crown nuts recognized as SAE Standard. These nuts are primarily intended for application in automotive and other ground-based motor vehicles and industrial equipment to provide an ornamental or protective closure over end of bolts, studs, or screws.
Standard

Refrigerant 12 Automotive Air-Conditioning Hose

2015-04-21
CURRENT
J51_201504
This SAE Standard covers reinforced hose, or hose assemblies, intended for conducting liquid and gaseous dichlorodifluoromethane (refrigerant 12) in automotive air-conditioning systems. The hose shall be designed to minimize permeation of refrigerant 12 and contamination of the system and to be serviceable over a temperature range of −30 to 120 °C (−22 to 248 °F). Specific construction details are to be agreed upon between user and supplier.1 NOTE—R12 refrigerant has been placed on a banned substance list due to its ozone depletion characteristics. SAE J51 specification will be phased out as new automotive A/C systems are using R134a. SAE J2064 is the Standard for refrigerant 134a hose. For refrigerant 134a use, refer to SAE J2064.
Standard

Test Procedures for Evaluating Bolt-Load Retention of Magnesium Alloy

2018-11-02
WIP
USCAR35-1
1.1 A bolt-load retention (BLR) test is a practical test to determine the bolt load of a fastener joint with time and at given temperatures. There are three types of BLR tests described in this standard, namely general-purpose test, design-purpose test, and screening material test. A general-purpose BLR test may be used for screening materials, while a design-purpose BLR test is usually used to verify the BLR behavior of a specific joint. The screening material test is an example of the general-purpose test for typical automotive applications. 1.2 The test procedures provides guidance in the following areas: (a) BLR sample and test fixture, (b) test fastener, washer and nut, (c) bolt-load measurement and data acquisition, (d) heating device, (e) initial loading, (f) baseline test, and (g) instrumentation of strain gages and calibration (see Appendix B).
Standard

Mechanical and Quality Requirements for Machine Screws

1979-06-01
HISTORICAL
J82_197906
This SAE Standard covers the mechanical and quality requirements for two grades of carbon steel, slotted and recessed, 82 degree flat countersunk, 82 degree oval countersunk, pan, fillister, hex, and hex washer head machine screws in sizes No. 4 through 3/4 in. for use in automotive and related industries. The dimensions of these screws are covered in SAE J478.
Standard

Mechanical and Quality Requirements for Machine Screws

1998-05-01
HISTORICAL
J82_199805
This SAE Standard covers the mechanical and quality requirements for two grades of carbon steel, slotted and recessed, 82 degree flat countersunk, 82 degree oval countersunk, pan, fillister, hex, and hex washer head machine screws in sizes No. 4 through 3/4 in. for use in automotive and related industries. The dimensions of these screws are covered in ASME B.18.6.3.
Standard

Mechanical and Quality Requirements for Machine Screws

2013-01-08
CURRENT
J82_201301
This SAE Standard covers the mechanical and quality requirements for two grades of carbon steel, slotted, and recessed, 82 degrees flat countersunk, 82 degrees oval countersunk, pan, fillister, hex, and hex washer head machine screws in sizes No. 4 through 3/4 in for use automotive and related industries. The dimensions of these screws are covered in ASME B18.6.3.
Standard

Low-Permeation Fuel Fill and Vent Tube

2007-07-02
CURRENT
J2405_200707
This SAE Standard covers the minimum requirements for a low-permeation tubing (100 g/m2·day or less) for use as a low pressure (14.5 kPa) liquid- or vapor-carrying component for use in gasoline or diesel fuel filler, vent, and vapor systems. The construction shall be designed to be functional over a temperature range of –40 °C to 100 °C for the T1 designation, or –40 °C to 125 °C for the T2 designation.
Standard

Ship Systems and Equipment--Part Standard for Studs--Continuous and Double End (Inch Series)

2016-11-22
WIP
J2271
This SAE Parts Standard provides dimensional and quality assurance requirements for 1/4 through 2 in sizes of studs in the following configurations in standard materials used for ship system applications: a. Continuous thread studs in UNRC and 8UNR series. b. Double end studs (clamping type) where both ends are of the same thread length (UNRC or 8UN). Also called bolt-studs. (These are suitable for mating with nuts or the set end may be installed with anaerobic thread locking compound.) c. Double end studs (interference thread type) with the nut end having UNRC or 8UNR series thread and where the tap end has NC 5 HFS interference fit thread forms. Also called a tap end stud. A complete metric companion to this document is provided in SAE J2271M, therefore no metric equivalents are presented. These studs are primarily or use in ship systems and equipment.
Standard

TEST PROCEDURES FOR EVALUATING BOLT-LOAD RETENTION OF MAGNESIUM ALLOYS

2007-10-08
CURRENT
USCAR35
A bolt-load retention (BLR) test is a practical test to determine the bolt load of a fastener joint with time and at given temperatures. There are three types of BLR tests described in this standard, namely general-purpose test, design-purpose test, and screening material test. A general-purpose BLR test may be used for screening materials, while a design-purpose BLR test is usually used to verify the BLR behavior of a specific joint. The screening material test is an example of the general-purpose test for typical automotive applications.
Standard

Fastener Part Standard - Hexagon Socket, Square Head, and Slotted Headless Set Screws - Inch Dimensioned

2016-11-15
CURRENT
J2656_201611
This SAE Part Standard covers selected inch dimensioned set screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE standard covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This standard permits the fasteners to be identified and ordered by a part identification number (PIN) as defined in this document.
Standard

Fastener Part Standard—Hexagon Socket, Square Head, and Slotted Headless Set Screws—Inch Dimensioned

2010-01-07
HISTORICAL
J2656_201001
This SAE Part Standard covers selected inch dimensioned set screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE standard covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This standard permits the fasteners to be identified and ordered by a part identification number (PIN) as defined in this document.
Standard

Fastener Part Standard - Hexagon Socket, Square Head, and Slotted Headless Set Screws - Inch Dimensioned

2003-09-15
HISTORICAL
J2656_200309
This SAE Part Standard covers selected inch dimensioned set screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE stand covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This standard permits the fasteners to be identified and ordered by a part or identifying number (PIN) as defined in this document. The purpose of this document is to assist the designer and other personnel in providing requirements and PIN?s for the most commonly used set screws for ship systems and equipment. A PIN is normally required for all military applications and provides a useful means of communicating set screw requirements to suppliers and manufacturers in a very succinct manner.
Standard

Wrenches, Box and Open End Combination Twelve Point, High Strength, Thin Wall, Metric

2013-02-10
CURRENT
MA4535A
This SAE Metric Aerospace Standard (MA) provides dimensional, performance, testing and other requirements for high strength, thin wall, double head box and combination wrenches which possess an internal wrenching design so configured that, when mated with hexagon (6 point) fasteners, they shall transmit torque to the fastener without bearing on the apex of the fastener’s wrenching points. This standard provides additional requirements beyond ANSI B107.9 appropriate for aerospace use. Inclusion of dimensional data in this document is not intended to imply all of the products described therein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.
Standard

Socket Wrenches, Hand (Metric)

2013-02-10
CURRENT
MA4534A
This SAE Aerospace Standard covers high strength commercial sockets and universal sockets which possess the strength, clearances, and internal wrenching design so configured that, when mated with hexagon (6 point) fasteners, they shall transmit torque to the fastener without bearing on the outer 5% of the fastener’s wrenching points. This document provides additional requirements beyond ANSI B107.5 appropriate for aerospace use. Inclusion of dimensional data in this document is not intended to imply all of the products described therein are stock production sizes. Consumers are requested to consult with manufacturers concerning lists of stock production sizes.
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