Type Chart Boltdepot
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This document provides an overview of common fastener types categorized by screws, bolts, nuts, washers, drive types, head styles, and more. It includes definitions and abbreviations for different fasteners like wood screws, machine screws, hex bolts, carriage bolts, flat washers, lock washers, hex nuts, wing nuts, and various head styles. The chart is intended to help users identify different fasteners and make fastener shopping easier.
Type Chart Boltdepot
- 1. Fastener Type Chart fastener shopping made easy ™ PRINTABLE FASTENER TOOLS SERIES Fastener Categories Wood Screws Machine Screws Thread Cutting Sheet Metal Screws Screws with a smooth shank Screws with threads for use Machine Screws Fully threaded screws with a and tapered point for use in with a nut or tapped hole. Machine screws with a thread point for use in sheet metal. wood. Abbreviated WS Abbreviated MS cutting (self tapping) point. Abbreviated SMS Self Drilling SMS Hex Bolts Carriage Bolts Lag Bolts A sheet metal screw with a self Bolts with a hexagonal head Bolts with a smooth rounded Bolts with a wood thread and drilling point. with threads for use with a nut head that has a small square pointed tip. or tapped hole. Abbreviated section underneath. Abbreviated Lag. HHMB or HXBT. Socket Screws Set Screws Eye Bolts Eye Lags Socket screws, also known as Machine screws with no head A bolt with a circular ring on Similar to an eye bolt but with Allen Head, are fastened with a for screwing all the way into the head end. Used for wood threads instead of hex Allen wrench. threaded holes. attaching a rope or chain. machine thread. J-Bolts U-Bolts Shoulder Bolts Elevator Bolts J shaped bolts are used for Bolts in U shape for attaching Shoulder bolts (also known as Elevator bolts are often used in tie-downs or as an open eye to pipe or other round stripper bolts) are used to conveyor systems. They have a bolt. surfaces. Also available with a create a pivot point. large, flat head. square bend. Copyright © 2000-2010 Bolt Depot Inc.
- 2. Fastener Type Chart fastener shopping ™ made easy PRINTABLE FASTENER TOOLS SERIES Fastener Categories (continued) Sex Bolts Mating Screws Hanger Bolts Sex bolts (a.k.a. barrel nuts or Mating screws have a Hanger bolts have wood Chicago bolts) have a female shoulder that matches the thread on one end and thread and are used for diameter of the sex bolts machine thread on the other through bolting applications they are used with. end where a head is desired on both sides of the joint. Head Styles Flat Oval Pan Truss A countersunk head with a flat A countersunk head with a A slightly rounded head with An extra wide head with a top. rounded top. short vertical sides. rounded top. Abbreviated FH Abbreviated OH or OV Abbreviated PN Round Hex Hex Washer Slotted Hex Washer A domed head. A hexagonal head A hex head with built in A hex head with built in Abbreviated RH Abbreviated HH or HX washer. washer and a slot. Socket Cap Button A small cylindrical head using a A low-profile rounded head socket drive. using a socket drive. Copyright © 2000-2010 Bolt Depot Inc.
- 3. Fastener Type Chart fastener shopping ™ made easy PRINTABLE FASTENER TOOLS SERIES Drive Types Phillips and Frearson Slotted Combination Socket, Hex or Allen An X-shaped drive. A slot in the head. A combination of slotted and A hexagonal hole for use with Abbreviated PH Abbreviated SL Phillips drives. an Allen wrench. Abbreviated combo One Way Square Torx Installs with a normal slotted Also known as Robertson A six-pointed star pattern, driver but can not be removed drive. specifically designed to without special tools. Abbreviated SQ or SD. prevent cam-out and stripped heads. Washer Types Flat Fender Finishing Split Lock A flat washer, used to distribute An oversize flat washer used to A washer used to obtain a The most common style of load. Available in SAE, USS and further distribute load ‘finished’ look. Usually used washer used to prevent nuts other patterns. especially on soft materials. with oval head screws. and bolts from backing out. External Tooth Lock Internal Tooth Lock Square Dock A washer with external ‘teeth’. A washer with internal ‘teeth’. A square shaped washer. Dock washers have a larger Used to prevent nuts and bolts Used to prevent nuts and bolts outside diameter and are from backing out. from backing out. thicker than standard. Ogee Thick, large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction. Copyright © 2000-2010 Bolt Depot Inc.
- 4. Fastener Type Chart fastener shopping ™ made easy PRINTABLE FASTENER TOOLS SERIES Nut Types Hex Heavy Hex Nylon Insert Lock Jam A six sided nut. Also referred to A heavier pattern version of a A nut with a nylon insert to A hex nut with a reduced as a Finished Hex Nut. standard hex nut. prevent backing off. Also height. referred to as a Nylock. Nylon Insert Jam Lock Wing Cap Acorn A nylock nut with a reduced A nut with ‘wings’ for hand A nut with a domed top over Acorn nuts are a high crown height. tightening. the end of the fastener. type of cap nut, used for appearance. Flange Tee Square Prevailing Torque Lock A nut with a built in washer A nut designed to be driven A four sided nut. A non-reversible lock nut used like flange. into wood to create a threaded for high temperature applica- hole. tions. K-Lock or Kep Coupling Slotted Castle A nut with an attached Coupling nuts are long nuts Slotted nuts are used in Castle nuts are used in free-spinning external tooth used to connect pieces of conjunction with a cotter pin conjunction with a cotter pin lock washer. threaded rod or other male on drilled shank fasteners to on drilled shank fasteners to fasteners. prevent loosening. prevent loosening. Copyright © 2000-2010 Bolt Depot Inc.