Glossary
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
A
- Anchor Bolt
- concrete fasteners that are placed in the concrete prior to the concrete being poured; also called cast-in-place anchors, L- anchors or J-bolts; usually shaped like an L or a J with threads on the end opposite of the bend
- Anchor Spacing
- space between two expansion anchors measured from centerline to centerline
- ANSI
- American National Standards Institute, oversees the creation, promulgation and use of norms and guidelines
- ANSI Standards
- standards developed in the concrete fastener industry to ensure match tolerance between hole size and carbide bit diameters
- Application
- refers to the specific job or item being fastened down
B
- Base Material
- refers to the material that masonry fasteners are installed into; includes concrete, brick or block
- Blue Screw
- generic name for the masonry screw; the color of the original Tapcon brand concrete screw because it is coated in a blue rust-resistant coating
C
- Cement Screw
- screw designed for use in cement; taps threads into a predrilled hole; can be purchased in smaller diameters of 3/16" and 1/4" or large diameters of 3/8", 1/2", 5/8" and 3/4"; two head styles of the hex washer head and the flat countersunk Phillips
- Concrete Anchor
- designed to be used to attach an item to concrete; also a fastener used to attach items to other masonry materials, such as brick or block
- Concrete Failure
- triangular or cone-shaped concrete failure; point of deepest embedment to the surface at about a 35-degree angle
- Concrete Screw
- specially designed to tap threads into a predrilled hole in masonry; hole in the base material must be smaller than the designated diameter of the concrete screw being installed
- Critical Edge Distance
- distance an expansion anchor must be placed from an unsupported edge of concrete to meet maximum holding values
- Critical Spacing
- distance expansion anchor must be spaced from each other to reach maximum holding values
D
- Designated Diameter
- diameter of the specific anchor; for example, a drop-in anchor called a 3/8" drop-in anchor has the designated diameter of 3/8"
- Displacement Controlled Expansion Anchor
- require the use of nail that, once inserted into the anchor body, expands the anchor
- Double Expansion Anchor
- double expansion anchor made up of five parts: a cone-shaped expander nut, a hollow cone, outer body and two spring bands; spring bands hold all the anchor parts together into one preassembled single piece and are made from zinc-plated steel; hollow cone and cone nut are the same except that the cone nut has internal threads and are made from Zamac material; outer body is tubular and made from die-cast zinc alloy Zamac
- Drop-In Anchor
- created from two pieces tubular steel shield and a cone-shaped expander plug; the shield is threaded for one-half the length of the interior portion of the anchor and the other half is slotted; slotted portion is where the case hardened cone-shaped expander plug is positioned
E
- Edge Distance
- the distance from centerline to centerline of an anchor from an unsupported edge of the base material
- Expansion Anchor
- derives its holding values by expanding upon installation into a predrilled hole in masonry materials
F
- Fixture
- the item that being installed to the base material; can range from a sign, electrical junction box, wreath to a light
I
- Item Being Fastened
- item that is being fastened to the masonry material; ranging from a 2x4, a railing to a piece of machinery
K
- Kwik Bolt
- Hilti, Inc. brand name for their wedge anchor; has evolved from the Kwik-Bolt, Kwik-Bolt 2, Kwik-Bolt 3 and the Kwik-Bolt TZ Power Bolts
- Kwik- Con
- Hilti, Inc. brand name for their concrete screw that taps threads into masonry materials
L
- Lag Shield Anchor
- comes in two lengths: short and long; made up of two parts that are preassembled; the interior part of the anchor is threaded to accept lag screw threads and the outer part is ribbed from the bottom of the anchor to three-quarters up the length of the anchor body; made from a Zamac material that is rust resistant
- Large Diameter Tapcon
- abbreviated AS LDT; is ITW Red Head’s larger diameter self-tapping masonry screw; available in diameters of 3/8", 1/2", 5/8" and 3/4"
- The Lok-Bolt™
- brand name for Powers Fasteners, Inc. sleeve anchor; made with four parts; comes completely assembled and ready to install; is available in both the zinc plated carbon steel and stainless steel; can be used in concrete, stone, brick or block base materials
- Lok-Bolt AS®
- sleeve anchor sold by Powers Fasteners, Inc.; preassembled with the anchor body, sleeve, nut and washer; designed for use in solid concrete or other masonry base materials such as brick or block; variety of head styles: round , anchor and flat for special applications
M
- Machine Screw Anchor
- machine screw anchors made up of two parts: the internal threaded cone and the outer sleeve; outer sleeve is made from a rust-resistant material called Zamac; internally threaded cone is made from zinc plated low carbon steel
- Masonry Screw
- screw that is designed to tap threads into a predrilled hole in masonry base materials, such as concrete, brick or block
- Metal Hit Anchor
- metal hit anchor or hammer drive anchor is a die-cast anchor consisting of a cylindrical zinc alloy body and zinc plated steel pin expander; body is split for a major portion at the opposite end the pin expander is inserted; anchor body is hollow for the entire length to allow space for the pin expander; pin expander is made from heat treated, high carbon steel that is zinc plated
- Minimum Edge Distance
- minimum distance for not spalling the concrete when anchor is expanded
- Minimum Embedment
- the minimum distance an anchor should be placed in the base material to achieve holding values
- Minimum Spacing
- minimum distance from centerline to centerline for the anchor expansion forces not to overlap; rule of thumb is 10 anchor diameters
N
- Necked In
- refers to the shape of the working end of wedge anchor that allows the expansion clip to expand'
- Necked Out
- shape used at the working end of the sleeve anchor to expand the sleeve against the walls of the base material
- Nylon Nail-Its
- body of a nylon nail-it made from a polyamide resin thermoplastic mold injected material; steel pin expander is a low carbon zinc plated steel; body is hollow with one end split and the other end with either a mushroom head, round head or flat head; steel pin expander has threads on the pointed end and the head is slotted to accept a screwdriver
P
- Power Stud®
- brand name for the wedge anchor sold by Powers Fasteners, Inc.; can be purchased in a zinc coated or galvanized carbon steel or stainless steel; used in solid concrete only; the hole diameter is equal to the diameter of the anchor diameter
- Power-Stud+ SD1
- Powers Fasteners’ brand name for their wedge anchor; code listings of ICC-ES ESR 2818 and ICC-ES ESR 2966 for cracked and uncracked concrete, category 1
- Power-Stud+ SD2
- wedge anchor sold by Powers Fasteners, Inc.; code listed in category 1 for cracked & uncracked concrete ICC-ES ESR 2502; anchor body is manufactured from carbon steel that is zinc plated with the expansion clip manufactured from stainless steel; designed for use in solid concrete; packaged with the proper number and size of nuts and washers
- Power Bolt®
- Powers Fasteners, Inc. brand name for their heavy-duty sleeve style anchor that is removable and resists vibration; can be used in a variety of masonry base material applications ,such as concrete, brick, stone, and block; can be purchased with a finished hex head or a flat head
- Power-Bolt+
- has a finished hex head; is Powers Fasteners, Inc. brand name for their heavy duty sleeve-type anchor; designed for use in solid concrete; provides consistent holding values in uncracked as well as cracked concrete
R
- Ramset
- company owned by ITW, Inc, that manufactures and sells powder actuated tools and gas automatic fastening systems
- Rawlplug
- was the name of a company and a brand name anchor that sold in the United States; currently the Rawlplug Company sells in Europe; the United States part of the company was sold to a company called Powers Fasteners in New Rochelle NY.
S
- Set-Bolt™
- two piece anchor, comprised of a threaded anchor body and an expansion plug; installation requires the bottom of the hole; manufactured only in zinc plated carbon steel; can be installed in stone, concrete and other solid masonry base materials
- SDA Max
- bit designed for larger hammer drills with a shank about the size of a thumb, or 3/4"; grooves and slots in the shank ensure positive rotation and wide range of hammering motion while chucked into the drill; range in diameter from 3/8" to 2" for a solid bit.
- SDS Carbide Bit
- designed for use in a keyless chucked hammer drill that accepts SDS bits; has grooves and slots in the shank that when chucked into the drill helps with the hammering and rotation movements; diameter of the shank is about the size of a small finger, or about 3/8"; bits range in size from 5/32" in diameter to 1-1/8"
- Single Expansion Anchor
- single expansion anchor made up of three pieces that are preassembled; anchor body is made from Zamac, a die-cast zinc alloy; the internal lugs are a cone shaped nut; spring band made from low carbon steel and zinc plated holds the anchor body and internal lugs together
- Sleeve Anchors
- sleeve anchor made up of four parts: nut, washer, threaded stud and sleeve; threaded stud is flared to a cone shape at one end and the rest of the stud is threaded; sleeve is a tubular piece of steel that fits over the stud and expands when the stud is pulled up through it; sleeve anchors come fully assembled and ready to use
- Spline Bit
- carbide tipped bit that meets ANSI standards; designed to be directly connected into a hammer drill that accepts spline drive bits
- Split Drive Anchors
- split drive anchor is all steel; one-piece available in two head style, flat countersunk and round. Split drive anchors are made from heat-treated carbon steel and are through hardened. At the opposite end of the head, the anchor is sheared into two pre-expanded halves.
- Straight Shank
- designed for use in a chuck that requires a chuck key; also called hammer bit; has a carbide tip; prior to drilling holes in masonry for masonry anchor check it is necessary to check that the bit meets ANSI standards
- Strike Anchor
- displacement controlled expansion anchor; body is steel with a hole down the interior length of the anchor; hole is smaller in diameter at the opposite end of the threads where the slots are; one end of the anchor is threaded for a portion of the length and the opposite end has four equally spaced slots; hardened nail is inserted into the interior hole in the anchor and is used to expand the slotted end of the anchor
- Stud Anchor
- generic term for a wedge anchor; refers to the body of the anchor or "stud" that sticks up out of the base material
- Sup-R-Stud
- MKT or Gunnebo’s brand name for their wedge anchor; available in a grade 2 as well as a grade 5 steel
- Stainless Steel Anchor
- fastener used for attaching an item to concrete, brick or block that is manufactured from stainless steel; some anchors are not available made from stainless steel and others can be made from 303, 304 or 316 stainless steel; type of stainless steel chosen depends on the corrosiveness of the atmosphere it is installed
T
- Tapcom
- misspelling of the brand name for the original masonry screw called Tapcon
- TAPPER
- masonry screw fastener sold by Powers Fasteners, Inc.; designed for applications of light to medium duty; packaged with the proper diameter drill bit and sold with either a flat countersunk Phillips or a hex washer head; coated with a special rust-resistant coating called Perma-Seal™
- Tapper+
- self-tapping screw fastener designed for use in concrete, block, brick and wood; manufactured by Powers Fasteners, Inc.; available in Perma-Seal coating, stainless steel; two head styles of flat countersunk and hex washer head
- Thread Length
- length of the threaded portion of the anchor measured
- Thunderbolts
- brand name for the sleeve anchor sold by Marksmen Manufacturing and sold by Concrete Fastening Systems, Inc.
- Titan
- Simpson Strong-Tie’s brand name for their masonry fasteners that taps threads into concrete, brick and block
- Titan HD
- Simpson Strong-Tie’s brand name for their large diameter self-tapping masonry fastener
- Trubolt
- brand name for ITW Red Head’s wedge anchor; available in carbon steel, stainless and galvanized with limited size and diameters
U
- Unsupported Edge
- where the concrete ends, the sides of a slab of concrete or column of concrete
W
- Wedge-All
- Simpson Strong-Tie’s brand name for their wedge anchor
- Wedge Anchor
- made up of a steel rod that is threaded on one end and the other end has the diameter necked down for a short distance that tapers outwardly to the full diameter of the rod; a clip is permanently preassembled in this space
- Wedge-Bolt®
- one-piece, hex headed, large diameter masonry screw manufactured and sold by Powers Fasteners, Inc.; designed to be easily removed; can be used in vibratory applications
- Wedge-Bolt+
- heavy duty screw anchor sold by Powers Fasteners, Inc; manufactured as one piece with a hex washer head code listed for cracked and uncracked concrete ICC-ES ESR 256 and ICC-ES ESR 1678
