A hex key (otherwise known as an Allen key) is required to fit these fasteners. In stock and ready to ship. 2-56. Min. The standard generic name used in catalogues and published books and journals is "hex key". Allen Flat Heads. Damage to the fastener or the tool can result from using a hex wrench that is too small for the socket, for example a 5 mm tool used in a 5.5 mm socket. SPS at the time was a prominent maker of shaft hangers and collars, the latter of which were set in place with set screws. dimensional data and technical information shown on the fastenerdata website is in the public domain and has not been acquired through the standards agencies, it has been completed and compiled by fastenerdata and is for guidance only; where discrepancies are found they are subject to change without notice. 713-747-9944. 5-40. The scant documentation available indicates that the idea of a hex socket screw drive was probably conceived as early as the 1860s to the 1890s, but that such screws were probably not manufactured until around 1910. The torque applied to the screw is constrained by the length and thickness of the key. For the American politician, see. ISO Hardware Engineering Data | ANSI Hardware Engineering Data. American sizes are defined in ANSI/ASME standard B18.3-1998 "Socket Cap, Shoulder, and Set Screws (Inch Series)". Purchase Metric Fasteners Today Allen Head Fasteners are also known as socket head fasteners. There is another name in Italian (brugola), stemming from the name Officine Egidio Brugola, a company who first commercialized Allen's products in Italy. Also known as A-2 stainless, 18-8 is the most common grade of stainless steel for general use. [6] (This was only 2 years after Robertson's Canadian patent.) "[8] SPS gave their line of screws the Unbrako brand name, chosen for its echoing of the word unbreakable. C Hex Width Across Corners Max. Get it Thursday, Oct 15. Request a quote today! This cost problem drove SPS to purchase its first screw machine and make its screws in-house, which soon led to SPS's foray into fastener sales (for which it later became well known within the metalworking industries). Terms and conditions | To alter those parameters, open up the equations tab and then you will see in the comment area which parameter need to modify. A special driver must be used to fasten or remove these fasteners. All dimensions are in millimeters. This type of hex key was invented in 1964 by the Bondhus Corporation, Hex socket screw heads are usually made by stamping the head with a, Hex keys are made by imparting the hexagon cross-section to steel wire (for example, with a, This page was last edited on 11 January 2021, at 13:03. Definitions of terms are located below the chart. Then we decided to incorporate a hexagon socket into the screw […]. Bolts are a type of essential fastener that often assembled with nuts. (Popular Science magazine would note in 1946 that "Cap screws and setscrews with heads recessed to take hexagonal-bar wrenches are coming into increasing use.")[11]. I have designed it in a way that you can alter the Bolt diameter, Screw length and Thread pitch to obtain various sizes. Metric nut comparison. 4.5 out of 5 stars 19. 19 mm keys are so close to the same size as ¾" that they are completely interchangeable in practical use. ISO metric machine screws are limited to four different head shapes: countersunk, raised countersunk, panhead, and cheesehead. Metric Stud Bolt To Nut Size Chart. Some hex keys have a ball on one end, which allows the tool to be used at an angle off-axis to the screw. The screw can be held by the key while it is inserted into its hole. Ideal in salt water and chlorine environments. "Allen key" redirects here. A heat treated alloy steel for applications where very high strength and hardness are required. Basic thread lengths, B, are same as given in table 12 of ASME B18.2.3.6M. Standard metric sizes are defined in ISO 2936:2014[12] "Assembly tools for screws and nuts—Hexagon socket screw keys", also known as DIN 911, and, measured in millimeters (mm) are: Metric hex wrench sizes are sometimes incorrectly referred to using the designation "M" followed by the size in millimeters of the tool or socket, e.g. Grade-A bolts are the preferred style for most applications. A tool with a size too small will then simply spin freely inside the larger sized screw head. info@boltdepot.com • VIGRUE Grub Screws Set 300pcs 304 Stainless Steel M2.5 M3 M4 M5 M6 M8 Hex Allen Head Socket Bolts, Metric Thread Socket Cup Point Assortment Kit with Internal Hex Drive and 6 Wrenches. RT Holdings III WG (US), LP, Luxembourg, on 24 July 2015. Explained by the geographical and commercial history of the drive type's development, the term "hex key" is best known as "Allen" in the UK, Australia, Canada and the USA (The “Allen” name is a registered trademark, originated by the Allen Manufacturing Company of Hartford, Connecticut circa 1910, now owned by Apex Tool Group, LLC, which was acquired by Bain Capital in 2014), and also in Spain (llave Allen pronounced with Spanish double L, /ʎaβe aʎen/), The tool can be reconditioned by grinding the worn-out end. There are six contact surfaces between bolt and driver. Note that numerous other sizes are defined; these are the most common. Metric hex keys are sorted in 1st choice sizes (which are most commonly used) and 2nd choice sizes (which are rarely used). as "Inbus" in Germany (the term “INBUS” is a registered trademark, originally an acronym for Innensechskantschraube Bauer und Schaurte introduced in 1934 by the German company Bauer & Schaurte, in 2015 acquired by INBUS IP GmbH, Breckerfeld, Germany),[1] In pursuit of headless set screws with a better drive than a straight slot, Hallowell said, SPS had sourced set screws of square-socket drive from Britain, but they were very expensive. System of Measurement; Inch: Metric: Thread Size. [2] In Italy, it is known as brugola, for the company Officine Egidio Brugola (established 1926). Metric Hex Bolt Dimensions; Metric Thread Pitch Chart; Nut Compatibility Chart; Nut Weight Chart; Standard Thread Pitch Chart; Socket Head Cap Screw Dimensions; Torque Charts; Close; Careers – Openings; Contact – get in touch; Search Products. Request A Quote. 99. 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