注: 建议图片大小150px*50px 
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注: 建议图片大小150px*50px 
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Single upset spool bolt
There are two types of upset bolts, single upset bolts and double upset bolts. The difference between the single upset and double upset is the number of the forged plates at the insulator end. Usually, the upset bolt is assembly with 2 regular square nuts, 1 lock nut, 1 pin and 1 round washer.
Spool Bolts are used in conjunction with spool insulators for side of pole installation.
Rolled threads assure uniformity and strength.
Single upset spool bolt with different size, also can be customized according to the clients’ requirements.
Single upset spool bolt
There are two types of upset bolts, single upset bolts and double upset bolts. The difference between the single upset and double upset is the number of the forged plates at the insulator end. Usually, the upset bolt is assembly with 2 regular square nuts, 1 lock nut, 1 pin and 1 round washer.
Spool Bolts are used in conjunction with spool insulators for side of pole installation.
Rolled threads assure uniformity and strength.
Single upset spool bolt with different size, also can be customized according to the clients’ requirements.
