Product family
Overhead distribution lines hang on hardware that stays out in the weather on a wood pole for as long as the line is up. Corona makes the galvanized steel parts linemen bolt, screw and drive into that pole: machine, hex and carriage bolts, double arming bolts, spool bolts, lag screws, washers, nuts, ground rods and screw anchors for the guys. Each part is made to ANSI C135.1, BS 4190 or the pattern the utility specifies.
Explore pole-line assemblies
Where it's used
Every tangent, angle and dead-end pole carries crossarms that hold the insulators and conductors clear of the pole. The arms are through-bolted to the pole, braced, and doubled where the line pulls hardest. Machine / Square Headed Bolt, Double Arming Rod, Carriage Bolt, Washers and Square Nut cover it.
Low-voltage secondary and service drops run on spool insulators mounted on racks or straight on the pole. The spool bolt carries the insulator and bolts through the pole or the rack. Spool Bolt, Washers, Square Nut and Hex Nut cover it.
Angles, dead-ends and long spans pull a pole off vertical unless a guy wire holds it back to an anchor in the ground. A screw anchor is turned into the soil at the lead and the guy is made off to its eye. Earth Anchor / Auger, Hex Nut and Washers cover it.
Transformers, arresters and neutral conductors on the pole are bonded to earth through a rod driven beside its base. The rod is driven to depth and the ground wire is clamped to its top. Ground Rod covers it.
Brackets, pole steps, cable guards and riser supports are fixed to the pole without drilling through it. Crews also replace corroded bolts and nuts during line maintenance. Lag Bolt, Hex Headed Bolt, Carriage Bolt, Hex Nut and Washers cover it.
Five families
Product family
Long galvanized bolts that pass right through the pole to clamp crossarms and hardware to it.
Product family
Bolts shaped for one job on the pole: doubling crossarms, or carrying a spool insulator.
Product family
Coarse-threaded lag screws driven into the pole where a bolt cannot pass through.
Product family
The nuts and bearing washers that finish every bolted joint on the pole.
Product family
The steel that goes into the ground: anchors for the guys and rods for the earth connection.
Pole-line assemblies
CROSSARMS
A machine bolt clamps the arm through the pole, carriage bolts fix the braces, and double arming bolts tie a pair of arms either side of the pole where the line pulls hardest.
Diameter: 3/8-1 1/4 in (common 1/2, 5/8, 3/4 in) / M10-M32 · Length: 2-40 in / 50-1000 mm
SpecificationsDiameter: 5/8-1 1/4 in (common 5/8, 3/4 in) / M16-M32 · Length: 10-36 in / 250-900 mm
Specifications
Diameter: 3/8-5/8 in / M10-M16 · Length: 1-7 in / 25-180 mm
SpecificationsSECONDARY
A shouldered spool bolt carries the spool insulator for low-voltage conductors, bolted to a rack or straight through the pole.
Diameter: 5/8 in / M16 · Shank length: 8-14 in / 200-350 mm
SpecificationsType: Square flat, square curved, round flat, spring lock · Square size: 2 1/4 x 2 1/4, 2 1/2 x 2 1/2, 3 x 3, 4 x 4 in / 57, 64, 76, 102 mm
Specifications
Size: 3/16-1 1/4 in / M6-M32 · Thread: UNC; tapped oversize for galvanized bolts
SpecificationsGUYING
A screw anchor turned into the soil gives the guy wire a fixed point, holding angle and dead-end poles upright against the pull of the line.
Rod diameter: 1/2-1 in / 12-25 mm · Helix diameter: 4-10 in / 100-250 mm
Specifications
Size: 3/16-1 1/4 in / M6-M32 · Type: Hex nut, heavy hex nut
SpecificationsType: Square flat, square curved, round flat, spring lock · Square size: 2 1/4 x 2 1/4, 2 1/2 x 2 1/2, 3 x 3, 4 x 4 in / 57, 64, 76, 102 mm
SpecificationsGROUNDING
A galvanized rod driven beside the pole gives transformers, arresters and the neutral their connection to earth.
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Complete product range
Each card shows the product role and first useful specification fields before the full detail page. Know a component by another name? Find it in the trade-names list.
Diameter: 3/8-1 1/4 in (common 1/2, 5/8, 3/4 in) / M10-M32 · Length: 2-40 in / 50-1000 mm
Specifications
Diameter: 1/4-1 1/4 in / M6-M32 · Length: 2-40 in / 50-1000 mm
SpecificationsDiameter: 3/8-5/8 in / M10-M16 · Length: 1-7 in / 25-180 mm
SpecificationsDiameter: 5/8-1 1/4 in (common 5/8, 3/4 in) / M16-M32 · Length: 10-36 in / 250-900 mm
SpecificationsDiameter: 5/8 in / M16 · Shank length: 8-14 in / 200-350 mm
SpecificationsDiameter: 1/4-1 in / M6-M25 · Length: 2 1/2-6 in / 60-150 mm
SpecificationsType: Square flat, square curved, round flat, spring lock · Square size: 2 1/4 x 2 1/4, 2 1/2 x 2 1/2, 3 x 3, 4 x 4 in / 57, 64, 76, 102 mm
Specifications
Size: 5/8-3/4 in / M16, M20 · Length: 6, 8, 10 ft / 2-3 m
SpecificationsRod diameter: 1/2-1 in / 12-25 mm · Helix diameter: 4-10 in / 100-250 mm
SpecificationsSize: 3/16-1 1/4 in / M6-M32 · Thread: UNC; tapped oversize for galvanized bolts
SpecificationsSize: 3/16-1 1/4 in / M6-M32 · Type: Hex nut, heavy hex nut
Specifications