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API Flange Weight Reference Chart 1
Includes API Spec 6A current, discontinued, and obsolete flanges

API 6A
Flange Size

Weld Neck Weight
Lbs.

Blind Weight
Lbs.

Number
 of Stud Bolts per set

Weight for 1 Set of All Thread Stud Bolts with 2 nuts each
Lbs.

Weight for 1 Set of Tap End Studs with 1 nut each
Lbs.

Ring Gasket

Gasket
Number

Weight
Lbs.

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