Fitting Up Bolts

Fitting-Up Bolts, often called Speed Bolts, are used to only temporarily align structural steel connections in general construction and building construction applications. These fasteners were designed with a hex head to allow iron workers to apply an open end wrench from any direction, allowing a quicker and safer assembly. Fitting Up Bolts, or Speed Bolts usually have an Acme thread form or a trapezoidal thread form. These thread forms offer speed during assembly and high clamp-load strength. Fitting up bolts always require a nut, which is why they are called bolts, not screws.

Fitting Up Bolts, or Speed Bolts are used to temporarily align parts of steel structures during assembly. Because of their thread type, they are able to be quickly tightened to get initial alignment, but since they are not strength-rated as structural bolts, they are removed and replaced during final structural assembly.
Common applications of Fitting Up Bolts are:

  • • Structural Erection
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Fitting Up Bolts Diameters

Fitting Up Bolts are available on the FCH Network with Imperial/US diameters that range from 1/2 to 3/4 The length of Fitting Up Bolts is usually measured from the point to the underside of the head.

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US/Imperial diameters
Metric diameters
Fitting Up Bolts Lengths

Fitting Up Bolts are available on the FCH Network with lengths that range from 2 to 5.

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US/Imperial lengths
Metric lengths
    Fitting Up Bolts Materials

    Fitting Up Bolts are available on the FCH Network in materials that range from Steel to Grade 5

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    Fitting Up Bolts Finishes

    Fitting Up Bolts are available on the FCH Network in finishes or coatings that range from Plain to Plain

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