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Pentalobe screws were adopted by Apple starting in 2009, when they were first implemented in the 15-inch MacBook Pro. They have since been used on other MacBook Pro, MacBook Air and iPhone models. Apple attracted criticism upon the introduction of the pentalobe screw; it was seen by some as an attempt to lock individuals out of their devices. [2]
The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques. [1] Pick holes in manhole cover, Palo Alto, California, USA Manhole valve made in 2022. The covers usually feature "pick holes", into which a hook handle tool is inserted to lift them.
bending failure by lateral torsional buckling: where a flange in compression tends to buckle sideways or the entire cross-section buckles torsionally; bending failure by local buckling: where the flange or web is so slender as to buckle locally; local yield: caused by concentrated loads, such as at the beam's point of support
Small (80 mm (3 + 5 ⁄ 32 in)) turnbuckleA turnbuckle, stretching screw or bottlescrew is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems.
The canteen cover is attached to the equipment belt with slide keepers. The water canteen cover is designed to accommodate the canteen, water (NSN 8465-00-889-3477). In 1975, the LC-1 designation for the water canteen cover was changed to LC-2 due to some minor design changes. The national stock number remains the same.
The small hole near the end of the power (non-ground) blades of some NEMA plugs is used for convenience in manufacturing; if present, it must be of specified diameter and position. [2] Small specialized padlocks are available to fit these holes, allowing " lockout " of hazardous equipment, by physically preventing insertion of locked plugs into ...
An automotive belt with the number "740K6" or "6K740" indicates a belt 74 inches (190 cm) in length, 6 ribs wide, with a rib pitch of 9 ⁄ 64 of an inch (3.6 mm) (a standard thickness for a K series automotive belt would be 4.5mm). A metric equivalent would be usually indicated by "6PK1880" whereby 6 refers to the number of ribs, PK refers to ...
Multi-piece cranks have a 9 ⁄ 16-inch (14.29 mm) hole with 20 TPI (a diameter/pitch combination fairly unique to this application). One-piece cranks use a 1 ⁄ 2 -inch (12.7 mm) by 20 TPI hole. French pedal spindles use M14 × 1.25 (14 mm (0.551 in) metric diameter with 1.25 mm (0.049 in) pitch) threads, and thread loosely into a 9/16 pedal ...