2. When parent materia surface is not flat or normal to axis of hole, provide a spotface for proper lockring entry.  Thread as shown per MIL-S-8879 is prefered. Alternate thread per MIL-S-7742 class 3B or National class 3 is applicable when specified by design activity. 4. Remove all burrs and sharp edges.
Oct 06, 2017 · Learn about the ways these common features are described in drawings. Counterbore Countersink Spotface Depth Diameter Radius I should also mention that I did not create this course, I just found it online and thought it was pretty well done.
counterbore or spotface depth. Apply cutting fluid to the tool's cutting edges and feed the quill until it reaches the desired depth set by the stop. Figure 4.3.23 shows this method of setting depth. If depth is critical, set the depth stop short of the desired depth, then stop and measure the depth before making adjustments to reach final depth.
Spotface the root surface using the Diamond Bur (Zest order No. 8922) to a depth where a full 360 degree recessed seat first appears on the occlasal surface of the root. (Fig. 2) When making a countersunk preparation into a divergent root, the depth of
Sep 17, 2008 · extremely comprehensive and covers an incredible depth of material. The first section of each unit is text which students are required to read and the second section is in workbook format – “Unit Review”, and requires students to practice and apply the information covered in the unit.
BSP is BRITISH STANDARD PIPE – Also known as Whitworth 55° Thread Form; BSPT is BRITISH STANDARD PIPE TAPER – Thread form per AS 1722.1, BS 21, ISO 7
Erix Tool When Experience Matters. Over the past 40 years, Erix Tool has been supplying precision-engineered tools for front and back spotfacing, chamfering and deburring to some of the world’s most innovative and demanding clients, from multinational aerospace corporations and military units, to global automotive and industrial equipment manufacturers.
Dec 31, 2020 · Specialists in mechanical & electronic chamfer gages, chamfer micrometers, countersink gages, countersink depth gages, hole gages, angle gages, center gages, rivet height gages, thread pitch diameter gages, length gages, precision bench surface centers & optical hole inspectors. Standard & custom dimensional inspection gages.
The spot is drilled to a very shallow depth; just enough so that the full diameter of the next tool is accommodated. The full process starts with the spot tool, then a centerdrill tool, followed by the conical bottom drill, finishing with the flat-bottom drill to remove the cone remaining and bringing the hole depth into tolerance.