ASME B18.7 pdf download.General Purpose Semi-Tubular Rivets,Full Tubular Rivets,Split Rivets, and End Caps.
2 GENERAL DATA FOR SEMI-TUBULAR AND FULl. TUBULAR RIVETS
2.1 Heads
2.1.1 Because the heads of these rivets an not machined or trimmed, the circumference may be somewhat irregular and edges may be rounded or flat.
2.1.2 The bearing surface of oval and truss head rivets shall be perpendicular to the axis of the rivet shank within 2 deg.
2.1.3 The rivet head and the rivet shank shall be concentric within 11% of the nominal shank diameter on the basis ad full indicator movement (NM).
2.2 Underhead Fillets
(hal and truss head rivets shall be furnished with a definite fillet under the head; however, the radius of fillet shall not exceed the values specified In the dimensional tables
2.3 Length
2.3.1 Measurement.. The length of oval and truss head rivets shall he measured, parallel to the axis of rivet, from the underside of the head to the extreme ent The length of flat countersunk head rivets shall be measured, parallel to the axis of rivet, from the juncture of the conical underside of head with rivet shank to the extreme end, except for the I 20-deg flat countersunk head rivets in Table 5. on which the length shall be measured from the top oI the head to the extreme end.
2.3.2 Length Increments. The minimum lengths and iskreincnts applicable to longer lengths shall be as specified in Table 10.
2.3.3 Tolerance on Length. The tolerance on length of rivets shall be as specified in Table 10.
2.4 Hole Depth
2.4.1 Hole depth shall be measured parallel to the axis of the rivet from the extreme end of the rivet to the intersection of the diameter of the hole with the contour at the bottom of the hole. The hole depth to the extreme point on the bottom contour of the hole shall not be greater than the shank length of the rivet.
2.4.2 The tolerance on hole depth shall be the %ime as the tolerance on length of the rivet.
2.5 Material
Semi-tubular and full tubular rivets shall be made from low carbon steel (0.1% carbon or less) (LJNS G10050), commercial yellow brass (tiNS (26800). copper (tiNS C14700), aluminum (tiNS A95052), or other materials as agreed upon between the manufacturer and the purchaser
2.6 Finish
Unless otherwise specified, rivets shall be supplied with a natural (as processed) finish, unplated or uncoated. Rivets may be furnished plain (bare metal) or with a protective coating (Llectrtldeposited plating and/or chemical conversion coating) as specified by the u-..er. All rivets shall be provided with a supplementary lubricant if necessary to meet the stated performance requirements without galling. The lubricant shall be clean and dry to the touch, shall not be irritating to normal skin, nor emit an unpleasant odor during rivet assemhl The performance of rivets that are furnished with a protective coating shall not deteriorate when the rivets are stored indoors for a period of 6 months. In cases whete rivets are given a protective coating or are cleaned following delivery to the purchaset the rivet producer shall not be held responsible for failure of the rivet to meet dimensional, mechanical, or performance requirements traceable to plating. coating. or cleaning practice. Lubrication (e.g., wasing) may improve the setting of the rivet.
NOTE: Nl1e4 and chromium finbiws are sery hard and, there- lore, wilt have a tendency to flake off the end of the rtvet when it is set by thc urer
2.7 WorkmanshIp
all burrs, seams, or other imperfections that might impair their usability, Rivets are not machined or trimmed, and unevenness ot the tubular end shall not be such that the usahtlity of the rivet shall be impaired, when clinched with properly aligned, appropriate setting tools.
ASME B18.7 pdf download
