Through-bolts fittings to the pole
The bolt passes through the fitting and the pole, and a hex nut clamps the joint tight.
Bolts & Arming Hardware
Hex Headed Bolt
Hex Headed Bolt is a hexagon-head through bolt for crossarms, brackets and fittings on utility poles. It is tightened with a standard socket or wrench at either end. Specify diameter, length, property class, finish and the quantity you need.
At a glance
Hex Headed Bolt at a glance.
Hex head bolts for utility poles
Hex head bolts are available in property classes 4.6, 5.6 or 8.8 for general utility applications where conditions allow this pattern.
1/4 to 1 1/4 in, M6 to M32
1/4–1 1/4 in (M6–M32) diameters, 2–40 in (50–1000 mm) long with up to 6 in (150 mm) of thread, hot dip galvanized to ASTM A153.
Pass through, then tighten the nut
The fitting and pole are bored to suit the bolt. The bolt goes through with a washer under the head, and a washer and hex nut go on the far side. The nut is tightened with a spanner or socket until the fitting is clamped to the pole.
Common applications
Where it is used.
Crossarms for utility systems
Where the utility specification calls for hex bolts, they take the place of square-head bolts in crossarm and brace fixings.
Brackets, stays and pole fittings
Transformer platforms, stay brackets and cable fittings are bolted through the pole. The bolt length follows the pole diameter at each fitting.
Metric and property-class orders
Projects written to metric thread and a named property class order hex bolts from M6 to M32 in class 4.6, 5.6 or 8.8.
Questions answered
Common questions.
What else is a hex pole bolt called?
In the United States it is also called a hex head machine bolt or hex machine bolt.
Which standards and property classes are hex bolts made to?
North American orders typically name ASTM A307 Grade A. GV supplies the bolt to the standard and class on your order, galvanized to ASTM A153.
Used in crossarm and attachment assemblies
Hex Headed Bolt through-bolts crossarms and heavier attachments where hex is specified, with Hex Nut and Washers finishing each joint.
Explore pole-line assemblies ↗Hex Headed Bolt specifications
Hex Headed Bolt configuration
ParameterUS / PrimaryMetric / Additional
Diameter1/4-1 1/4 inM6-M32
Length2-40 in50-1000 mm
Thread lengthUp to 6 inUp to 150 mm
StandardANSI C135.1ANSI C135.1
GradeASTM A307 Grade A; property class 4.6, 5.6, 8.8ASTM A307 Grade A; property class 4.6, 5.6, 8.8
FinishHot dip galvanized to ASTM A153Hot dip galvanized to ASTM A153
Pole-Line Hardware
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