Materials for High Strength Hexagon Bolts

There are three kinds of materials for high strength hexagon bolts, as follows: (1) carbon steel. Generally, hexagonal bolt manufacturers distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel according to carbon content in carbon steel. 1. Low carbon steel C% ≤ 0.25% is usually called A3 steel in China. It [...]

Removal of Worn Inner Hexagon Bolts

There are many parts of machinery and equipment that use inner hexagon bolts to fix parts. However, because they are often disassembled, the inner hexagon of the bolts is easy to grind round, and it is difficult to remove them with the hexagon wrench. This paper introduces two methods of hexagonal nut hexagon bolt parts, [...]

By |October 28th, 2020|A563, ASTM International Standard, Bolt Types, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Socket Head Bolts|Comments Off on Removal of Worn Inner Hexagon Bolts

High Strength External Hexagon Combination Screw

Introduction to High strength external hexagon combination screw for buildings and workshops: High strength external hexagon combination bolt for steel structure is mainly used in railway and highway bridge, boiler steel structure, industrial workshop, high-rise civil building, tower and mast structure, hoisting machinery and steel structure where friction type high-strength bolt combination screw is required. [...]

Advantage of High Strength Dacromet Bolt

The advantage of high strength Dacromet bolt is due to the development of Dacromet, which has become a necessary technical requirement in some workplaces. The main reasons are as follows: 1. Electroplating not only pollutes the air, land and water, but also does great harm to operators. The state has repeatedly declared that it is [...]

By |September 18th, 2020|A563, ASTM International Standard, Bolt Types, F568M, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Bolts, Structural Bolts|Comments Off on Advantage of High Strength Dacromet Bolt

Requirements for Heat Treatment High Strength Fasteners

Heat treatment high strength fasteners should be quenched and tempered according to the technical requirements. The purpose of heat treatment quenching and tempering is to improve the comprehensive mechanical properties of fasteners, so as to meet the tensile strength value and yield ratio specified by the product. Heat treatment process has a crucial impact on [...]

By |August 17th, 2020|A490, A563, ASTM International Standard, Bolt Types, Fastener, Heavy Hex Bolts, High Strength Structure Bolts|Comments Off on Requirements for Heat Treatment High Strength Fasteners

Application of Hexagon Head Bolt

The installation and use of hexagon head bolts are directly related to the quality and service life of fasteners, and the safety of bolts is the primary consideration. The main factors affecting the hexagon head bolt: the selection of material, thickness of steel plate, processing and cutting, surface coating and installation of steel structure shall [...]

By |June 29th, 2020|A325, A563, ASTM International Standard, Construction Bolts & Nuts, Heavy Hex Bolts, Hex Bolts, Hexagon Bolt, High Strength Structure Bolts, Structural Bolts|Comments Off on Application of Hexagon Head Bolt
  • ASTM A325

ASTM A325

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. The equivalent metric standard is ASTM A325M, which is [...]

  • ASTM A325 Specifications

ASTM A325 Specifications

ASTM A325 Specifications Prior to its withdrawl in 2016, the ASTM A325 specifications covered high strength heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for [...]

By |October 10th, 2019|A325, A563, ASTM International Standard, F3125|Comments Off on ASTM A325 Specifications
  • Hex Nuts Products

Hex Nuts Products

Hex Nuts Products Medium-Strength Steel Hex Nuts—Grade 5 These nuts are suitable for fastening most machinery and equipment. Metric Medium-Strength Steel Hex Nuts—Class 8 Class 8 nuts are comparable in strength to Class 8.8 bolts and are suitable for fastening most machinery and equipment. Metric Fine-Thread Medium-Strength Steel Hex Nuts—Class 8 Left-Hand Threaded Medium-Strength Steel [...]

By |October 6th, 2019|A563, ASTM International Standard, Bolts & Nuts Grade, DoWeDo News, Fastener, Heavy Hex Nuts, Hex Nuts, Nuts|Comments Off on Hex Nuts Products