Offices in Montana, Utah, Florida, California, Texas, Minnesota and North Dakota

Lightning Rod Bases - Series 300

Bases are available in cast aluminum, brass or tin plated brass for corrosion resistance. Bases hold the air terminal rods in place and attach them to the rest of the system.

To place an order please call 800-370-5886 or fill out this Quote Form.

202 Dual Mount Base

copper dual mount base

Brass or aluminum cast base for vertical or horizontal mounting. Bolt tension cap for attaching lightning conductor can be turned so conductor can be run horizontally or vertically. May be mounted using screws, nails, drive-in anchors or adhesive.

Point DiameterAluminumCopperTinned Copper
3/8"----C20238C20238T
1/2"A20212C20212C20212T
5/8"A20258C20258C20258T


216 Swivel Base

swivel mount base

Cast aluminum or brass base with a swivel adaptor. Can be used on variety of sloped surfaces allowing the installer to level the rod without having to field bend the air terminal. Bolt tension cap can be turned so conductor can be run horizontally or vertically. May be mounted using screws, nails, drive-in anchors or adhesive.

Point DiameterAluminumCopperTinned Copper
3/8"----C21638C21638T
1/2"A21612C21612C21612T
5/8"A21658C21658C21658T


218 Offset Base

offset base

Cast aluminum or brass base with a 2” offset to clear an overhang when vertical mounting. Bolt tension cap can be turned so conductor can be run horizontally or vertically. May be mounted using screws, nails or drive-in anchors.

Point DiameterAluminumCopperTinned Copper
3/8"----C21838C21838T
1/2"A21812C21812C21812T
5/8"A21858C21858C21858T


220 Adhesive Base

adhesive mount base

Cast aluminum or brass base with a larger surface area allowing for greater surface contact when gluing for maximum strength. Bolt tension cap for securing conductor.

Point DiameterAluminumCopperTinned Copper
3/8"----C22038C22038T
1/2"A222012C22012C22012T
5/8"A22058C22058C22058T


222 Side Mount Base

side mount base aluminum

Cast aluminum or brass base with slight offset for vertical mounting. Bolt tension cap for securing conductor. May be mounted with screws, nails or drive-in anchors.

Point DiameterAluminumCopperTinned Copper
3/8"----C22238C22238T
1/2"A22212C22212C22212T
5/8"A22258C22258C22258T


229 Narrow Surface Base

narrow surface base aluminum

Stamped aluminum or copper 8” strap base can be mounted on narrow surfaces or roof ridge or can be formed to fit curved surfaces. Bolt tension cap for securing conductor. May be mounted using screws, nails or adhesive.

Point DiameterAluminumCopperTinned Copper
3/8"----C22938C22938T
1/2"A22912C22912C22912T
5/8"A22958C22958C22958T


231 Ridge Mount Base

Ridge Mount Base

Stamped aluminum or copper 12” strap base for mounting on roof ridges. Can be formed to fit curved surfaces. Bolt tension cap for securing conductor. May be mounted using screws, nails or adhesive.

Point DiameterAluminumCopperTinned Copper
3/8"----C23138C23138T
1/2"A23112C23112C23112T
5/8"A23158C23158C23158T


235 Straight Base

Straight Base

Machined hex straight base available in aluminum or copper. Available with bolts or set screws to hold conductor firmly. Lightning rod screws into top to keep rod and conductor in line.

Point DiameterAluminumCopperTinned Copper
3/8"----C23538HC23538HT
1/2"A23512HC23512HC23512HT
5/8"A23558HC23558HC23558HT
Add suffix "SS" if you want set screws instead of bolts.


237 Standing Seam Base

Standing Seam Base

Cast aluminum or brass base for standing seam roofs and has a 3/4” groove to fit over most seams. Provided with a swivel adapter. Bolt tension cap can be adjusted so conductor can be ran parallel or perpendicular. Two bolts secure base to standing seam. Other sizes are available for larger standing seams.

Point DiameterAluminumCopperTinned Copper
3/8"----C23738C23738T
1/2"A23712C23712C23712T
5/8"A23758C23758C23758T


Pipe Bases

Pipe Bases

Cast aluminum or brass pipe bases drilled and tapped for dual mounting on pipes. Base sizes range from 1.314” to 2.500”.

Point DiameterPipe ODAluminumCopperTinned Copper
3/8"1.314-1.90----C24838C24838T
1/2"   A24812C24812C24812T
5/8"   A24858C24858C24858T
3/8"1.750-2.50----C24938C24938T
1/2"   A24912C24912C24912T
5/8"   A24958C24958C24958T
Other sizes available. Contact our sales office for more information and sizes.


250 Stamped Vent Base

Stamped Vent Base

Stamped vent base without conductor holder. Direct mount lightning rod base provides over 3 square inches of surface contact on continuous metal surface.

Point DiameterAluminumCopperTinned Copper
3/8"----C25038C25038T
1/2"A25012C25012C25012T
5/8"A25058C25058C25038T


254 Top Mount Base with 1" C-Clamp

top mount base

Cast aluminum or brass top mount c-clamp base provides 8 square inches of surface contact. Directly mount to a horizontal metal surface. Part number 254 fits up to 1” thick surface and part number 255 fits 1”-3” thick surface.

Point DiameterBeam ThicknessAluminumCopperTinned Copper
3/8"Up to 1"----C25438C25438T
1/2" A25412C25412C25412T
5/8" A25458C25458C25458T
3/8"1"-3"----C25538C25538T
1/2" A25512C25512C25512T
5/8" A25558C25558C25558T


Continue to Series 400 - Bonding Plates, Clamps and Lugs