ASME B18.3:2002 pdf download SOCKET CAP, SHOULDER, SET SCREWS, HEX, AND SPLINE KEYS
1.2.1 Socket Head Cap Screws.The sockethead shall have flat chamfered top surface withsmooth or knurled cylindrical sides and a flatbearing surface. Specifications are given inTables 1A through 1F, pages G4 thru G-11Both hexagon and spline socket types are in-
cluded.Dimensions for drilled holes and counterbores are included in Appendix A, Table A1, pageG-42
1.2.2 Drilled Hexagon Socket Head CapScrews. Specifications for hexagon socket headcap screws having 2, 4, and 6 holes drilled inthe head for lock wire application are given inTable 1F, page G-11.
1.2.3 Socket Flat Countersunk Head CapScrews. The flat countersunk head shall havea fiat top surface and a conical bearing surfacewith included angle of approximately 82 deg.Specifications are given in Tables 2A, 2B, and2C, pages G-15 thru G-19. Both hexagon andspline socket types are included.
1.2.4 Socket Button Head Cap Screws. Thebutton head shall have a low rounded top sur-face with a large flat bearing surface. Specifi.cations are given in Table 3, page G-20. Bothhexagon and spline socket types are included.
1.2.5 Socket Low Head Cap Screws. Theseare similar to socket head cap screws exceptthey have reduced head height and a smallersocket size. They are designed to be used inapplications where height clearance is a problem. Specifications are given in Table 1G. Splinesocket types are excluded.
1.3Socket Head Shoulder Screws
The socket head shoulder screw is ahexagon socket head screw having a cylindricalshoulder under the head. Specifications aregiven in Table 4, page G-23.
Socket Set Screws4
The socket set screw is a screw threadedthe entire length except for its length of pointThe point is designed to bear on a mating partThe common point styles are cup, flat, oval, cone.and half dog. Specifications for set screws areshown in Tables 5A through 5C,pages G-26thru G-31, for both hexagon and spline sockettypes.
Keys and Bits for Driving Socket1.5Screws
The tools for driving socket screws arehexagon or spline keys and bits, the specifications for which appear in Tables 8 and 9, respectively, pages G-35 and G-37.
1.6Dimensions
All dimensions in this standard are givenin inches, unless stated otherwise.
Ali dimensions apply prior to coating, unless stated otherwise.
17Finish
Because of the high hardness of theseproducts, it is recommended that they not beelectroplated.
Identification Marking1.8
Products described in Paras. 1.21 thru1.2.4 and 1.3 with diameters larger than #10 mustbe marked with the identification of the sourcemanufacturer or private label distributor accept.ing the responsibility for conformance to thisstandard. Marking size, type and location ofmarks are at manufacturer’s option. Productsshall not be marked on bearing surface.
1.9Options
Options, where specified, shall be at thediscretion of the manufacturer, unless agreed
ASME B18.3:2002 pdf download
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