Metric Heavy Hex Head Structural Bolt, ASTM A325 A490 Heavy Hex Bolts, Hot dip galvanized 8.8 heavy hex bolt for electric equipment Finish: ZINC, Plain Material: Steel, carbon steel Standard: DIN FINISHED: Black,ZINC HDG,Dacroment. PLAIN SIZE: M45,M4,M12 M72,M56 M3.5 LENGTH: 60MM-300MM GRADE: 4.8,6.8 8.8 10.9 TYPE: hexagon bolt customized Certificate: ISO9001 Metric Heavy Hex Head […]
High Strength Hex Head Bolts, High Strength Hex Head Bolt Nut, Titanium Plating Bolt Nut, High strength hex head bolt nut din933 din931 din934 Titanium plating bolts and nuts China supplier
High Strength Hex Head Bolts Features
Material Carbon Steel
Surface Treatment Titanium plating
Standard DIN 933 DIN931 DIN934
Thread Coarse, Fine
Used Building Industry Machinery
1. Certification: ISO, ROHS, SGS
2.Material:Carbon Steel 45, alloy steel ,General Carbon Steel,SUS304,316
3.Available Standard: DIN, ANSI, ASTM, JIS, BS,ISO
4. Finishing: Yellow, blue and white zinc plated, Galvanized, HDG, Chromate, Dacromet
5. Available material: SUS316, SUS304, Carbon Steel
6. MOQ: 1000pcs
The distinction between a bolt and a screw is commonly misunderstood. There are several practical differences, but most have some degree of overlap between bolts and screws. High Strength Titanium Bolt Nut
The defining distinction, per Machinery’s Handbook, is in their intended purpose: Bolts are for the assembly of two unthreaded components, with the aid of a nut. Screws in contrast are used in components which contain their own thread, and the screw may even cut its own internal thread into them. Many threaded fasteners can be described as either screws or bolts, depending on how they are used.
Bolts are often used to make a bolted joint. This is a combination of the nut applying an axial clamping force and also the shank of the bolt acting as a dowel, pinning the joint against sideways shear forces. For this reason, many bolts have a plain unthreaded shank (called the grip length) as this makes for a better, stronger dowel. The presence of the unthreaded shank has often been given as characteristic of bolts vs. screws, but this is incidental to its use, rather than defining.
Mechanical properties, imperial
These types of bolts are designed to be tightened to near their proof strength, in order to create significant bolt tension. The standard states that the bolts must be tightened to at least 70% of the tensile yield strength. These bolts use the same material as their common cousins (ASTM F568M for metric bolts), but have a thicker and wider head to more effectively distribute the load. This modified geometry is often referred to as heavy hex geometry. Nuts must meet ASTM A563, which also uses heavy hex geometry. Dimensions of heavy hex geometry are per document ANSI/ASME B18.2.6, which uses “coarse” threads as defined by Unified Thread Standard.