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Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002143
EISBN: 978-1-62708-188-7
... factors that influence thread quality, production rate, and cost in die threading are composition and hardness of work metal; accuracy and finish; thread size; obstacles, such as shoulders or steps; speed; lead control; and cutting fluid. The article examines these factors and describes the tools...
Book Chapter

By Mark Johnson
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002139
EISBN: 978-1-62708-188-7
... the pitch of the tapped thread. Lead screws convert rotary motion into linear motion so that the axial motion of the tap into the hole conforms with the desired pitch of the thread. Lead-screw control is often used in high-volume applications or with larger tap sizes to ensure quality threads. A typical...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... cycle if there were no compensating lead on the die. Axial movement does not affect thread quality, but it may restrict the ability to produce a full thread close to a shoulder and will reduce the amount of full thread that can be produced with a special die face. The effective lead angle varies...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002142
EISBN: 978-1-62708-188-7
... movement does not affect thread quality, but it may restrict the ability to produce a full thread close to a shoulder and will reduce the amount of full thread that can be produced with a special die face. The effective lead angle varies slightly during die penetration so that some axial movement does...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... 2 ). Failures of threaded and blind fasteners and of fastened sheet covered by this identification code are illustrated in Fig. 1 . Fig. 1 Types of failures in threaded and blind fasteners and in fastened sheet. Source: Ref 3 Fastener Quality and Counterfeit Fasteners...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002140
EISBN: 978-1-62708-188-7
... of a part, and internal and external threads can be cut at the same time. Numerical Control (NC) Machines Numerical control (NC) machines are also used for thread milling, together with other operations, in a single fixturing. Long cutter life and high-quality threads are among the advantages...
Image
Published: 01 January 1989
or regrind. The tap used maintained thread size, quality, and concentricity with outside diameter within 0.075 mm (0.003 in.), as specified, throughout the entire production run. More
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002141
EISBN: 978-1-62708-188-7
... out by one of the several methods of thread rolling. Thread grinding is applied only when the advantages of the ground threads exceed the disadvantages of the generally higher cost of equipment or when, for technological reasons, the production or quality requirements cannot be met by the generally...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002187
EISBN: 978-1-62708-188-7
...Abstract Abstract This article discusses various machining techniques of zinc alloy die castings. These include turning, boring, drilling, reaming, tapping, die threading, milling, and sawing. In addition, the article describes the factors that influence machinability of the zinc alloy die...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001360
EISBN: 978-1-62708-173-3
... are also required to be physically tested. In the case of unthreaded studs, the quality inspection test can be to bend 15°. The studs can be straightened after testing, if required. Threaded studs can be subjected to a torque test to approximately 80% of the yield torque load, rather than a bend test...
Book Chapter

Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005555
EISBN: 978-1-62708-174-0
...), one additional stud per hundred welded should be tested to verify weld quality. Below 10 °C (50 °F), welded studs should be tested using the bending tool, rather than by hammer testing. In colder welding temperature conditions, threaded studs should always be tested by torque, rather than by bending...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003323
EISBN: 978-1-62708-176-4
..., friction coefficient testing, torque tension testing, locknut testing, and angular ductility and rotational capacity tests. The article reviews the basic methods and fundamental principles for mechanical testing of externally and internally threaded fasteners and bolted joints. The test methods...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006501
EISBN: 978-1-62708-207-5
... of the various methods and summarizes the advantages and disadvantages of each. The article also discusses the use of staples, nails, rivets, and threaded fasteners and provides relevant property and performance data. aluminum assemblies clinching crimping dimpling interference fits mechanical joining...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001018
EISBN: 978-1-62708-161-0
...Abstract Abstract This article discusses the properties of threaded fasteners made from carbon and low-alloy steels containing a maximum of 0.55% carbon. It provides guidelines for the selection of steels for bolts, studs, and nuts intended for use at temperatures between -50 and 370 deg C...
Book Chapter

By R.J. Glodowski
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001016
EISBN: 978-1-62708-161-0
...; or for hot forging. The article explains these operations, along with the several recognized quality and commodity classifications applicable to steel wire rods. The heat treatments commonly applied to steel wire rod, either before or during processing into wire, include annealing, spheroidize annealing...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005629
EISBN: 978-1-62708-174-0
..., often referred to as a pin tool to differentiate it from other tooling associated with the process. The pin tool used in FSW influences virtually every aspect of the process. Pin tool design affects the process loads, material flow, process-zone temperature, and weld quality. Tool design also has...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005576
EISBN: 978-1-62708-174-0
... Tool Data Fixture Data Welding Tool ID Fixture ID Tool Type Clamp Spacing Shoulder Diameter in Clamp Pressure psi Shoulder Configuration Pin Configuration Joint Preparation Thread Pitch th/in Pin Diameter in Axial control mode Pin Length...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002395
EISBN: 978-1-62708-193-1
... of fracture mechanics, traditional toughness tests such as the CVN were widely used to characterize steels and establish guidelines for their fitness for service. Many of these approaches are still widely used today. In fact, today the CVN test is the most widely used quality control test for evaluating steel...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005333
EISBN: 978-1-62708-187-0
... castings. Normally, to obtain a high-quality bright chromium finish on castings, they must be buffed and polished before plating. However, a combination of modern zinc die casting and plating techniques substantially reduces or, in some cases, eliminates the need for mechanical polishing. If a finish...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... in the assembly were overstressed. The bolts failed because of poor hardenability relative to their diameter. The material for the U-bolts was commercial quality cold-finished 1045 steel bar 29 mm (1 1 8 in.) in diameter. The bar stock was cut to length, threads were cut on both ends...