15 Years experience for steel structure,gold supplier in china

Hangzhou Jiaxiang Gaoqiang Bolts Co.,Ltd

High Strength Bolts

You are here：

Home

Products

Large Hexagon Head Bolts

ASTM A325 Hex Bolts Hexagon Head Bolts Nut And Washer

ASTM A325 Hex Bolts Hexagon Head Bolts Nut And Washer

ASTM A325 Hex Bolts Hexagon Head Bolts Nut And Washer

Model Number: HYZ003

Standard: JIS B1186,ASTM A325,ASTM A490

Raw Material: 40CR

Diameter: M12~M30(1/2

Length: 30mm-200mm(1.1/4

Surface Treatment: Black oxide,Hot dip galvanized,Dacromet,Electric

Grade: 8.8/10.9

Set: 1 bolt+1 nut+2 washers

Port: Shanghai

Certificate: CE,ISO 9001,FPC BC1,SGS,BV,UKTC

Supply Ability: 1000000 Piece/Pieces per Month

Product Description

The tension control bolting system has quickly become the most widely usde method of tensioning high strength structural bolts.The ease of use and economic benefits has provided tens of thousands of projects with consistent,reliable,and economical steel connections.The TC bolt is formally recognized by the AISC(American Institute of Steel Construction)and the RCSC(Research Council on Structural Connections)as and approved installation method.

The Tension Control System consists of one each:A325 TC Bolt,A194 2-H Heavy Hex Nut,F-436 Flat Washer.

Key advantages of the Tension Control assembly include:

Cost effective,one operator ,single sided installation

Lightweight,non-impacting installation tools

Visual inspection

Pre-certified,matched and tested assemblies

Reliable and effcient bolt tensioning

Bolt tension is not dependent on operator skill or tool settings

Main Features

Tension control bolts,improved type of heavy hexagonal structural bolts,were developed for more simplified bolt fastening and more accurate performance and offer such excellent characteristics as shown below because no fastening technique of high level is required:

1. Controlled clamping force can be ensured.

2. Completion of bolt fastening can be comfirmed by the shear-off of the notched end of the bolt.

3. Fastening can easily be done by electric wrench.

4. Noiseless installation and no need of wrench adjustment.

5. The bolt does not rotate when fastening.

6. No apprehension of bolts being left unfastened.

Products Drawing

Dimensions for twist off structural bolt

NOMINAL SIZE OR BASIC PRODUCT DIAMETER	F		G		D	H		LS	S
NOMINAL SIZE OR BASIC PRODUCT DIAMETER	WIDTH ACROSS FLAT		WIDTH ACROSS CORNERS		BEARING SURFACE DIAMETER	HEIGHT		LENGTH OF SPLINE	WIDTH ACROSS FLATS
	MAX	MIN	MAX	MIN	MIN	MAX	MIN	REF.	REF.
1/2” 0.500	0.875	0.850	1.010	0.969	0.890	0.323	0.302	0.50	0.32
5/8” 0.625	1.062	1.031	1.227	1.175	1.102	0.403	0.378	0.60	0.43
3/4” 0.750	1.250	1.212	1.443	1.383	1.338	0.483	0.455	0.65	0.53
7/8” 0.875	1.438	1.394	1.660	1.589	1.535	0.563	0.531	0.72	0.61
1” 1.000	1.625	1.575	1.876	1.796	1.771	0.627	0.591	0.80	0.70
1-1/8” 1.125	1.812	1.756	2.093	2.002	1.991	0.718	0.658	0.90	0.80

Class of bolt,nut and washer

Components	Bolt	Nut	Washer
Class	F1852 TYPE1	DH / 2H	F436

Technical Parameter

The bolt reacts to the fastening torque and the notched end of the bolt shears off.

The required clamping force is thus given.

Installation Procedure

Customized

We provide customized services to meet customers' special requirements and standards!Mark the customer's logo in the product header

Processing Capacity

Surface Treatment

Polish: Polished by wood shave.

Surface is shining and be good for welding quality.
Surface with small bruises,easy to be rust for stocking.

Advice:Suit for using in a short time or keep in dry condition.

Phosphating

Surface with phosphating coating,rust-proof and avoid bruises,and can stock long time;
Surface is not shining,easy to burn gun sleeve.

Plain + Special Heat Treatment

Surface is smooth,good weld quality, no big bruises,rust-proof, and can stock long time;
Surface is not shining,take more long time for production;

Base Treatment

We provide two type base treatment for your choose:

Slightly curve
Chamfer

For Slightly curve, 68% customers to choose it!

For Chamfer, 32% customers to choose it!

Our Laboratory

Application

Our shear shud used for Mulit-floor&High rising buildings, bridge construction, airport, stadium, exhibitions,conference centre,railway station.We dedicated to be expertise in structure connection solutions.Now, we have participated in a number of major steel structure projects at home and aboard, you are welcome to discuss with us.