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General Motors, and other automobile manufacturers, have also begun using side-post battery terminals, which consist of two recessed female 3/8" threads (SAE 3/8-16) into which bolts or various battery terminal adapters are to be attached. These side posts are of the same size and do not prevent incorrect polarity connections.
ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Nut Threads from 105 to 300 mm Nominal Diameter: Active: DIN 103-7: ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Bolt Threads from 8 to 100 mm Nominal Diameter: Active: DIN 103-8: ISO Metric Trapezoidal Screw Threads; Limiting Sizes for Bolt Threads from 105 to 300 mm Nominal ...
The bolt holes are spaced evenly about the bolt hole circle. Wheel studs are the bolts that are on your mounting hub and are used along with lug nuts to attach the wheel to the car. The bolt hole circle is the circle that the center of each bolt aligns with. The second number in a bolt pattern is the diameter of this circle. [2]
M-thread The designation used for international ISO metric screw threads. BSP British Standard Pipe, a type of threads originating from Britain. UNEF A Unified Thread Standard originating from the USA, where the EF designation indicates an "Extra Fine" thread pitch.
A fork might include bottle mounts as well. If equipped a 3 hole configuration is normally used to allow the cage to be mounted higher or lower on the fork. The holes are usually sized and threaded to accept an M5 × 0.8 bolt, which means standard course metric threads with 5 mm in diameter and 0.8 mm pitch. [5]
Common features are the screw thread covering the whole length of the screw from tip to head and a pronounced thread hard enough for the intended substrate, often case-hardened. [ 1 ] For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw ...
Komatsu and JIS (Japanese Industrial Standard) fittings have flare ends similar to JIC fittings. Komatsu and JIS both use a 30-degree flare seating surface. The only difference is Komatsu uses millimeter thread sizes while JIS use a BSP (British Standard Pipe) thread.
Dimensions of heavy hex geometry are per document ANSI/ASME B18.2.6, which uses "coarse" threads as defined by Unified Thread Standard. ASTM 325 bolts can be considered equivalent to Grade 8.8 bolts according to ASTM F568M. [citation needed] For a higher strength version of this type of bolt, see ASTM A490.
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