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lag bolt lag screw [3] coach screw: Similar to a wood screw, except that it is generally much larger running to lengths up to 15 in (381 mm) with diameters from 0.25–0.5 in (6.35–12.70 mm) in commonly available (hardware store) sizes (not counting larger mining and civil engineering lags and lag bolts) and it generally has a hexagonal drive ...
Lag screw, also called a lag bolt. Lag screws (US) or coach screws (UK, Australia, and New Zealand) (also referred to as lag bolts or coach bolts, although this is a misnomer) or French wood screw (Scandinavia) are large wood screws. Lag screws are used to lag together lumber framing, to lag machinery feet to wood floors, and for other heavy ...
ASTM A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. It defines mechanical properties for bolts that range from 1 ⁄ 2 to 1 + 1 ⁄ 2 inches (13 to 38 mm) in diameter. [1]
Elevator bolt - Bolt with a large flat head used in conveyor system setups. Hanger bolt - Bolt that has no head, machine threaded body followed by a wood threaded screw tip. Allow nuts to be attached to what is really a screw. Hex bolt - Bolt with a hexagonal head and threaded shank. Section immediately under head may be unthreaded for ...
Since treehouses are subject to frequent load reversal produced by winds, TABs must be made of spring steel [1] The bolts are able to support from between 9,000 and 12,000 pounds (4,100 and 5,400 kg), [4] a much greater load than conventional lag bolts.
Through-bolts are used instead of lag bolts for maximum bonding to the pole and to avoid loosening of hardware. The relevant industry documents covering FRC poles include: ASTM D4923, ANSI C136.20, OPCS-03-02, and Telcordia GR-3159, Generic Requirements for Fiber-Reinforced Composite (FRC), Concrete, and Steel Utility Poles. [12]
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