Blind Bolt Spec

No reduction in diameter to allow for the slot is required.

Blind bolt spec.

Hollo bolt an expansion bolt for structural hollow sections shs hss with blind connections when you only have access to one side of the connection. D hole size where required should be the same as the flange bolt hole. After installation a neat low profile head is left with no stud. Blind flange datasheets and dimensional information.

The thin wall bolt has a strong shear capacity. Oversize repair parts huck part numbers and procurement specifications. A spectacle blind or spec blind abbreviated as sb is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. When used at the end of a pipe vessel or tank it provides an easy open access for further extension of the pipe.

In bearing the resistance of a blind bolt should satisfy the requirements of aisc specification 360 10 clause j3 10 expressions j3 6a or j3 6b as required using the nominal diameter d of the bolt. W 5 32 nominal diameter cherry maxibolt blind bolt 219 min. It is different than a valve in that the blind is a permanent or long term isolation device. In practice these dimensions have been rounded round off upwards.

Because the blind flange s sole purpose is to contain the pressure of the pipe it and its bolts are stressed more. As the bolt head is tightened the cone is pulled up the bolt thread causing the legs of the sleeve to expand until the cone locks the sleeve against the inner wall of the hollow section available in two versions. The huck blind bolt system is a service proven high strength blind fastening system which combines important features of structural durability and fabrication convenience with good economics. The original 3 part design for general hollow section connections and the larger sized 5 part high clamping force hcf.

The tw or thin wall bolt was developed to address the need for a blind fixing to be used into lightweight steel sheet or cladding material. Grip with blue anodize on sleeve. Maxibolts are primarily used in structures where higher loads are required. In combined tension and shear blind bolts should satisfy the following expressions.

Blind flange dimensions class 150 to class 2500 outer diameter of body bolt circle bolt hole diameter straightness and alignment of the bolt hole thickness of the blind. Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm. The cherry maxibolt blind bolt system is available in alloy steel and a 286 cres materials.