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Screw threads

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Image
Published: 30 November 2018
Fig. 25 Examples of different internal threads for joints. (a) Screw thread insert. (b) Stake nut. (c) Rivet nut. (d) Blind rivet nut. (e) Spring (clip) nut. (f) Direct tapping into an extruded hole. After Figure 14 from Ref 44 More
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
... Abstract Thread milling is a method of cutting screw threads with a milling cutter in a thread mill. This article discusses the operational procedures of thread milling machines, namely, universal thread mills, production thread mills, planetary thread mills, and numerical control machines...
Image
Published: 01 January 2002
Fig. 7 Retrieved screw of cast cobalt-chromium.molybdenum alloy (type ASTM F75). (a) Defective screw threads from casting deficiencies. (b) Longitudinal section through threads showing porosity. 15×. (c) Enlarged thread of section shown in (b) with gas holes, segregation of primary phases More
Image
Published: 01 January 2002
Fig. 10 Retrieved screw of cast Co-Cr-Mo alloy (type ASTM F75). (a) Defective screw threads from casting deficiencies. (b) Longitudinal section through threads showing porosity. 15×. (c) Enlarged thread of section shown in (b) with gas holes, segregation of primary phases, and dissolved oxides More
Image
Published: 01 January 2000
Fig. 5 Schematic of a forced-vibration rotating eccentric mass fatigue testing machine. 1, stationary frame with large top providing ample work space; 2, reciprocating platen; 3, rotating eccentric mass is source of dynamic force, which is varied by screwing threaded rod in or out; 4, thread More
Image
Published: 01 August 2013
Fig. 13 Wetting front kinematics in a composite probe with solid material at the bottom, hollow in the upper part, and no screw threads. Quenched in high-speed oil at 80 °C (175 °F) without agitation. Source: Ref 49 More
Image
Published: 01 February 2024
Fig. 13 Rewetting behavior of a workpiece (~50 × 130 mm, or 2 × 5 in.) with two sections of solid material at the bottom and middle portions, and a hollow section on top; all parts connected with screw threads. Quenched in Isorapid 277 (high-speed oil) at 80 °C (175 °F) without agitation 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
... heads, thread gages, worm gears, powdered iron screws, and self-threading insert bushings. Materials that can be thread ground include hardened and annealed screw stock, alloyed high-speed tool and stainless steels, and sintered iron. Sintered iron is widely used for continuously threaded screws...
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
... with the nonadjustable type. Fig. 2 Adjusting-screw type of solid die for threading The other type of adjustable one-piece die is the spring type ( Fig. 3 ). Adjustability is provided by the design of the body and the holder, which function like a collet chuck. As the outer nut on the holder is tightened...
Image
Published: 01 December 2008
Fig. 8 Small parts of malleable iron. (a) Nut made of pearlitic malleable iron, grade EN-GJMB-650-2, 600 g. The insert shows the core used for the as-cast internal screw thread. (b) Balancing weight made of ferritic malleable iron, grade EN-GJMB-350-10, 1500 g. The large picture shows More
Image
Published: 31 August 2017
Fig. 8 Small parts of malleable iron. (a) Nut made of pearlitic malleable iron, grade EN-GJMB-650-2, 600 g. The insert shows the core used for the as-cast internal screw thread. (b) Balancing weight made of ferritic malleable iron, grade EN-GJMB-350-10, 1500 g. The large picture shows More
Image
Published: 01 November 1995
Fig. 7 Typical screw boss design for thread-cutting screws. 25.4 mm = 1 in. Screw size Diameter d , in. D , in. 6 0.123 0.140 8 0.145 0.166 10 0.167 0.189 12 0.191 0.219 1 4 in. 0.220 0.250 More
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 assembly is the use of screw threads on mating components. The threads are usually coarse pitch, rounded in shape, and are formed into sheet or tubular pieces such as drawn and ironed cans or impact-extruded bottles and their mating caps. Threaded connections can be opened and closed multiple times, making...
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
... thread-forming and self-locking screws. The preferred polygonal shape is trilobular and is produced in flat-die machines. In contrast to thread cutting and thread grinding, thread rolling does not remove metal from the work blank. Rather, thread rolling dies displace the surface metal of the blank...
Image
Published: 01 January 1989
Fig. 2 Adjusting-screw type of solid die for threading More
Image
Published: 01 November 1995
Fig. 6 Self-threading screws More
Image
Published: 30 November 2018
Fig. 20 Examples of joints using threaded fasteners. (a) Bolt and nut. (b) Screw and internally threaded hole. (c) Stud, nut, and internally threaded hole More
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
... or conical blank. Polygonal blanks are also thread rolled for the purpose of fabricating thread-forming and self-locking screws. The preferred polygonal shape is trilobular and is produced in flat die machines. In contrast to thread cutting and thread grinding, thread rolling does not remove metal from...
Image
Published: 30 November 2018
Fig. 26 Self-tapping and self-drilling screws. (a) Stainless steel self-tapping screw. (b) 7075-T6 aluminum thread-forming screw into plastic. (c) Thread forming into cast aluminum blind hole with steel ALtracs screw. (d) Thread forming into cast aluminum with steel Taptite 2000 screw. (e More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... screws or bolts, nuts and washers, molded-in threads, self-threading screws, rivets, spring-steel fasteners, press fits, and snap fits. The article explains solvent bonding used for thermoplastic parts, and tabulates the solvent types used with various plastics. It also describes the surface preparation...