Application and Classification of T head bolt (hammer head screw)

T head bolt is actually a big family, what is called T bolt?

T head bolt from the literal understanding is the bolt shape like a capital English letter "T", solid and its reputation is also.

Since T-bolts (also known as T-screws or T-screws, hammer head screw) are part of a large family, there must be many descendants!In the work often encountered a lot of T-bolt consultation, the problem is all sorts of strange; as a senior T-bolt manufacturing expert, today we introduce the main classification of T-bolt and related routes:

Firstly . Classification by use

1.1 T-bolt for channel steel, the most commonly material is 45 # steel, forging manufacturing, quenching and tempering treatment;Also useful for low carbon steel, more useful for alloy steel, stainless steel 304 and 316;According to the actual need to choose materials and mechanical properties of the grade, the surface treatment is chemical blackening, electric galvanizing, hot dip galvanizing, dacro, mechanical zincizing after plating dacro and so on.

1.2 T-bolt for aluminum alloy profile, also known as hammer head bolt, material is SUS304 stainless steel and medium carbon steel, medium carbon steel T-screw surface can be galvanized or nickel plated and coated with Dacro, carbon steel T-bolt material is 1045 medium carbon steel, using red satin production process, grade 8.8 after heat treatment, generally for mold press bolt,T-type screw can be directly placed into the groove, the installation process can automatically position and lock, T-type bolt is generally used with flange nut, is the standard connection fastener when installing Angle parts, according to the width of the groove to choose T-type bolt.

1.3 T-bolt for water supply system,

1.4 T bolt for T groove, generally refers to GB GB37-88

1.5 T-bolts are used for building fasteners, which are mainly locked and fixed by building scaffolding. Low-carbon steel is mainly produced and generally matched with a flange nut.The most commonly used are the M12, M14, UNC1/2-13 and BSW1/2-12.

1.6 T-bolt for solar photovoltaic

Secondly, according to the standard model:

2.1 GB GB37-88T slot bolts, this standard provides for the thread specifications of M5-M48 B class T slot bolts.This national standard stipulates that the diameter is less than or equal to M39 and the mechanical performance grade is generally 8.8. For the mechanical performance grade with diameter greater than M39, it is generally agreed with the customer through negotiation.And the standard states: "due to structural reasons, T - shaped groove with bolts do not jam load and head rod bonding strength test".This standard specification is M5, M6, M8, M10, M12, M16, M20, m2-m24. (, M36, M42, M48 a total of 12 specifications, the length of the shortest 25, up to 300.

Surface treatment is mainly chemical blackening and galvanizing passivation.

Machinery industry standard JB/T 2.2 8007.2 1999 | t-slot machine tool fixture parts and components quick-release bolt;

2.3 DIN787 jis standard,

2.4 DIN DIN186 T square neck bolt;

2.5 DIN DIN188T double-neck bolt;

2.6 German Standard DIN261.