MS bolts come in hex head and internal wrenching styles. General Purpose Bolts. The hex head aircraft bolt (AN-3 through AN-20) is an all purpose structural bolt used for general applications involving tension or shear loads where a light drive fit is permissible (0.006 inch clearance for a 5/8 inch hole, and other sizes in proportion). Bolt Depot - How Fastener Measurements are NotatedDrive type describes the type of tool used to install the fastener. Common examples are phillips, slotted, and square drives.. Some fasteners, such as carriage bolts, do not have a drive and therefore no drive type is specified.. In certain other cases, such as with hex bolts, the head and drive type (hexagonal) is implied by the fastener type.
HS Hex ap Screw or High arbon Steel H.D.G. Hot Dip Galvanized Hex olt an refer to either a "bolt" or a "cap screw" HHS Hex Head ap Screw (also an abbreviation for Heavy Hex ap Screw) HR Hardness measured on the Rockwell scale HR Hardness measured on the Rockwell scale HWH Hex Washer Head ID Interior Dimension General description of Stud Bolts and Hex Bolts used in In Petro and chemical industry for flange connections Stud Bolts and Hex Bolts are used. The Stud Bolt is a threaded rod with 2 heavy hexagon nuts, while the Hex Bolt has a head with one nut. Nuts and head are both six sided. Glossary - Electronic Fasteners, Inc.Sep 25, 2014 · HB:Hex bolt or Hardness reading measured on the Brinell Scale. HCS:Hex Cap Screw or High Carbon Steel. HD:Head. HDG (H.D.G.):Hot Dip Galvanized. Hex:Standard Hex Nut or Screw. Hex Bolt:Can refer to either a bolt or a cap screw HHCS:Hex Head Cap Screw (also an abbreviation for Heavy Hex Cap Screw) HHMB:Hex head machine bolt
Jun 05, 2008 · So, for example, in the United States one might ask for a 2-inch hex-head quarter-twenty bolt, which would be 2 inches long, have a hexagonal head (to be turned by a wrench) have a nominal diameter of a quarter of an inch, and Understanding Metric Fasteners - Fastener Mart
The bolt consists of a threaded shaft with a square- or hexagon-shaped head at one end. A hand or socket wrench that fits the head of machine bolt is used to tighten or loosen the fastener during use. The shaft of the bolt is inserted through holes drilled in both pieces of metal, and a nut is threaded onto the protruding threads of the bolt.Hex Bolt Dimensions & Hex Cap Screw Dimension ChartHex bolts are less precise and therefore cheaper than hex cap screws. Additional features that hex cap screws have which make them superior is that they are manufactured with a higher level of preclusion (tighter tolerance) and also possess a washer facing under the head of the bolt. Standard Hex cap screw dimensions include: