Insulators: Pillars & Standoffs
HV Standoff Insulator
(ICR) 8CER-HV
High voltage standoff insulator. 3 grooves in top cap spaced 1.25" apart. 8-1/2" base to brass wire holder - top. 2-3/8" diameter. 11" long galvanized bracket.
$75 each
Large Glazed Ceramic
Standoff Insulator
(ICR) L61458
Glazed ceramic standoff insulator of the behemoth class. Made by Lapp Insulator Division, these jewels are crated and ready to go.

36-1/2" tall, 18 (eighteen) 6" diameter rings make a dirt path about a mile long. Top lug has 3/4" diameter hole. Bottom pipe flange style base has 4 holes on 3-1/2" centers. The weight guesstimate is 100 pounds.

These insulators are solid and will handle push or pull torque so you can either hang a wire or hold one up.

$275 each
Ceramic Standoff
(ICR) 410-0373
Burley ceramic standoff. Solid brass caps with threaded hole each end. Made for Gates. Used in large transmitter RF compartments. 14-1/2" overall length, 1-1/4" diameter ceramic, 1-1/2" diameter brass cap.
$47.50 each
Porcelain Standoff Insulator
(ICR) 430-0166
Porcelain standoff insulator. 10"L, 3" diameter heavy brass base and head. 1-1/2"L x 1/2"D brass stud @ base. (4) #10 threaded holes @ head. 8 ribs. Insulator used in vintage Gates transmitter. Gates P/N: 430-0166-000.
$75 each
Solid PTFE
Standoff Insulator
(ICR) TEFLON
Solid PTFE standoff insulator. Threaded bore, 1/2", brass insert, one end only. 1-3/4" diameter x 8-1/4" long. Nice!! Harris P/N: 424-0166.
*** SOLD OUT ***
6" Navy Ceramic
Standoff Insulator
(ICR) 3G1300-96
1" diameter glazed ceramic pillar with aluminum foot. 6" high. 5-1/4" leakage path (bare ceramic). 2-1/4" center - center on foot holes. One 10-32 threaded hole at top.
$10 each - $9 (4+)
4" Navy Ceramic
Standoff Insulator
(ICR) 3G1300-160
The epitome of heavy duty. 1-1/4" diameter glazed ceramic pillar with oversize brass cap and metal foot. 4" high. 1-5/8" leakage path (bare ceramic). 2-5/8" center - center on foot holes. Brass cap has four 3/16" threaded holes.
$12 each - $10 (4+)
(ICR) 3G1300-160-2
Same as above but brass cap has two 3/16" threaded holes.
$12 each - $10 (4+)
(ICR) 3G1300-240
Same as above but 6" high. Two 3/16" holes.
$15 each - $13 (4+)
4" Navy Ceramic
Standoff Insulator
(ICR) C414-2-4
Heavy duty 1-1/4" diameter glazed ceramic pillar with flush brass cap and metal foot. 4" high. 2-5/8" leakage path (bare ceramic). 2-5/8" center - center on foot holes. Brass cap has two 3/16" threaded holes.
$10 each - $9 (4+)
Horn Gap Static / Lightning
Dissipation
(ANT) M3322
Horn gap static / lightning dissipation for broadcast transmitter transmission lines. Chromed divergent electrodes dissipates high voltage stray energy. Also known as a Jacob's Ladder. 8-1/4" x 20"H. Harris P/N: 994-3322-001.
$125 each
12" Navy Ceramic Standoff Insulator
(ICR) C414-1-12
Navy ceramic standoff insulator. 12" high and 10-1/2" leakage path (bare ceramic) and brass cap has one 1/4" threaded hole. Perfect for winding an RF coil too! 1-1/4" diameter.
$20 each - $18 (4+)
4" Navy Ceramic
Standoff Insulator
(ICR) N17-1-70057
Heavy duty 1-1/4" diameter glazed ceramic pillar with oversize brass cap and brass foot. 4" high. 2-1/4" leakage path (bare ceramic). 2-1/4" center - center on foot holes. Brass cap has two 3/16" threaded holes and includes clamp as shown. 0.856" max clamp capacity, inside screw to screw.
$15 each - $13 (4+)
(ICR) 9059T-4
Identical to above but does NOT include clamp as shown.
$14 each - $12 (4+)
6" Navy Ceramic
Standoff Insulator
(ICR) 3G1300-96C
1" diameter glazed ceramic pillar with aluminum foot. 6" high. 4-1/4" leakage path (bare ceramic). 2-1/4" center - center on foot holes. Brass oversize cap has one 10-32 threaded hole at top.
$13 each - $12 (4+)
(ICR) 1148-12
Shorter version of above. 1" diameter, 3" high. 1-1/4" leakage path (bare ceramic). 2-1/4" center - center on foot holes. Brass oversize cap has one 1/4"-20 threaded hole at top.
$10 each - $9 (4+)
8-1/4"H Ceramic Pillar
Standoff Insulator
(ICR) 410-0359
Ceramic pillar standoff insulator. 1-1/4" diameter, 8-1/4" overall length. 1-9/16" diameter x 1.25" high cap. Two 1/4" threaded holes on cap. Base measures 3-3/8" x 1-7/8". 2-5/8" c-c holes. NOTE: Crack in top hat. (Click here for picture). Does not effect performance. Satisfaction guaranteed.
$15 each
10-1/4"H Ceramic Pillar
Standoff Insulator
(ICR) 410-0354
Ceramic pillar standoff insulator. 1-1/4" diameter, 10-1/4" overall length. 1.577" diameter x 1.25" high cap. Two 1/4" threaded holes on cap. Base measures 3-3/8" x 1-7/8". 2-5/8" c-c holes. NOTE: Crack in top hat. (Click here for picture). Does not effect performance. Satisfaction guaranteed.
$18 each

6" Ceramic Pedestal
Standoff Insulator

6" Ceramic Pedestal Standoff Insulator
(ICR) 61180B
Pedestal insulator, 6" ceramic standoff. 1-3/16" x 6" overall. 4-1/2" leakage path. 3-3/16" threaded holes on top cap 1" x 1-3/4" diameter.
$15 each - $13.50 (4+)

Standoff Lag
#10 x 2"L Lag

Standoff Lag w Ceramic Insert
(ICR) CERSO
Ceramic insert with #10 x 2" long lag - galvanized. 5/8" inside diameter, slot opening 3/8". Uses include coax, HV cables and conductors.
$1.95 each - $1.70 (10+)
Ceramic Insulator Cone
Conical Ceramic Insulator
(ICR) CAS61084
Glazed conical ceramic insulator. 1" diameter base x 0.525" diameter top x 1.494" high. 8/32" threads.
$8.50 each - $7.70 (20+)
Ceramic Insulator Cone
Conical Ceramic Insulator
(ICR) NS4W2012
Glazed conical ceramic insulator. 1.026" diameter base x 0.543" diameter top x 1.495" high. 8/32" threads. Chamfered base. P/N: NS4W2012CAS.
$8.50 each - $7.70 (20+)
Non-Glazed Ceramic
Feed-thru Standoff
(ICR) 50.5
Non-glazed ceramic feed-thru standoff. 0.183" thru-hole. No threads. 0.5" diameter x 0.5" long.
$1.75 each - $1.50 (10+), $1.30 (100+)
Johnson Ceramic
Standoff Insulator
A: (ICR) 22J
Johnson ceramic standoff insulator. 1" high.
*** SOLD OUT ***
B: (ICR) 22J/B
Optional metal reinforcement. 5/8" high.
20¢ each
Ceramic Standoff
(ICR) CER41
Ceramic standoff. No threads. Brown glazed. 0.1" hole centered end to end. 1/2"D x 2-7/8"L. New, old stock from WWII. Small chips on edges.
$2.75 each - $2.40 (6+)
Glazed Ceramic
Standoff Insulator
(ICR) S01.75
Glazed ceramic standoff insulator. Stackable. 1-3/4" diameter x 3/4" high. 3/8" hole.
$3 each
Glazed Ceramic Square
Insulator
(ICR) CERSQ
Glazed ceramic square insulator. 2 threaded holes at each end. 1" x 1" x 2". Either round or square edges.
$6.50 each
Glazed Ceramic Square
Standoff Insulator
(ICR) CER37
Glazed ceramic square standoff. # 8 threads. Dimensions: 3/4" x 3/4" x 1-1/4"H.
$5 each - $4.50 (10+)
Unglazed Ceramic Insulator
(ICR) 7871958
Unglazed ceramic insulator. Threaded hole at each end. 1" hole 5/8" from end, unthreaded. 3/8" x 3/8" x 2".
$2 each
Glazed Ceramic Insulator
(ICR) 7871958G
Glazed ceramic insulator. Threaded hole at each end. 1" hole 5/8" from end, unthreaded. 3/8" x 3/8" x 2".
$3 each

Steatite Insulator

(ICR) 410-0342
Mykroy steatite insulator for Harris Broadcast equipment. 4 holes. 7-11/16" long, 2" high, 1/2" thick. Harris P/N: 410-0342-000.
$45 each

Ceramic Air Variable Tie Bar




(ICR) TIEBAR
Ceramic air variable tie bar. 2-5/8" x 1/4" x 9/16"H. Outer stay bolts 2.168" c-c, inner holes 0.463" c-c (0.926" across middle). NSN: 309-1976-020.
$17.75 each

Ceramic Insulator

(ICR) 839-0523
Ceramic insulator. Replacement for air variable capacitor / RF switch. 8-1/2"L x 1-1/2" x 5/8" thick. 3 holes, 1/2" diameter. 3-5/8" c-c.
$45 each

Glazed Ceramic Standoff

(ICR) CER42
Glazed ceramic standoff. Slotted top. 6 - 32 threaded hole on each end. 7/8" diameter x 2-5/8" long. 1/8" deep x 3/8" wide slot on one end.
$10 each - $8.90 (6+)

Non-Glazed Ceramic
Insulator Plate

(ICR) PLATE
Non-glazed ceramic insulator plate. 1.51" outside diameter, 0.632" inside diameter center hole, 0.192" thick. 0.74" c-c mounting holes.
$2 each - $1.50 (10+)

Non-Glazed Ceramic
Disk Spacer

(ICR) CERDISK
Non-glazed ceramic disk spacer. 0.990" outside diameter, 0.203" inside diameter inner hole, 0.378" high.
$1.50 each - $1.25 (10+)

Fence Post Insulator

(ICR) SPLIT5
I call it a fence post insulator. The kind I can imagine my rancher relatives whacking a nail through. Also found in some attics of very old houses holding up mostly bare AC wiring. Channel grooved for 2 wires. 1-5/8" diameter x 1-3/4" total height. NOTE: Packed in sawdust filled crates since the 1940s. Expect some cosmetic chipping. Electrically A-OK.
$1.50 per pair

Ceramic Post
3/8" x 1-3/8"

(ICR) POST
Cute little ceramic post has #8 base thread for mounting and 4 pass through holes (18 gauge wire or smaller) for wire tie at end or center tap.
$1 each - 75¢ (20+)

Fence Post Insulator

(ICR) 3G-575
Another fence post insulator or long wire standoff. Poke a nail through the hole to secure. On a tree, post, etc. Channel grooved. 1-5/8" diameter x 1-1/16" total height. 3/8" hole. NOTE: Packed in sawdust filled crates since the 1940s. Expect some cosmetic chipping. Electrically A-OK.
$1 each - 75¢ (10+)

4" Ceramic Insulator

(ICR) 3X1
Use for a base or ?? Ridges hold 3-5/8", 3", 2-1/8" or 1-3/8" inner diameter tubing in place. 1" wide, 4" diameter, 3/8" center hole.
$8 each
 

Standoff
Insulators

Glazed ceramic pillars are threaded at the ends and come in many different sizes. Quantities are limited. Hard-To-Find!
 
 
Part Number
O. D.
Long
Thread
Notes
Price Each
Price (20+)
 
(ICR) CER3 3/8" 1" 6 - 32 Millen, Glazed ceramic
2.00
1.75 (20+)
1.50 (100+)
(ICR) CER38 3/8" 1-3/8" 6 - 32 Millen, Unglazed ceramic
2.50
2.10
(ICR) CER40 0.410" 3/4" 6 - 32 Millen, Unglazed ceramic
2.00
1.50
(ICR) CER8 1/2" 1-1/4" 8 - 32 Millen, Glazed ceramic
3.50
3.00
(ICR) CER20 1/2" 1-1/2" 8 - 32
Mfg. P/N: NL523W02-012
4.00
3.50
(ICR) 34000 1/2" 2" 8 - 32 Millen, Glazed ceramic
4.75
4.20
(ICR) CER32 1/2" 2.5" 8 - 32 Glazed ceramic
5.00
4.50
(ICR) CER15 1/2" 12.5" #10 -
4.00
3.50
(ICR) 31002 5/8" 2-5/8" #4 Millen, Unglazed ceramic
8.50
7.25
(ICR) CER21 3/4" 1" 10 - 32 Glazed ceramic
5.00
4.35
(ICR) 15005 3/4" 1-1/4" 10 - 32 Millen, Glazed ceramic
5.50
4.60
(ICR) CER9 3/4" 1-1/2"L 10 - 32 Millen, Glazed ceramic
6.00
5.25
(ICR) CER10 3/4" 2"L 8 - 32 Glazed ceramic, Picture
7.75
-
(ICR) CER17 1" 4"L 1/4 - 20 Glazed ceramic, Picture
20.00
-
(ICR) CER39 0.95" 0.312" #4 Millen, Unglazed ceramic
1.90
1.38
(ICR) CER26 1" 5" 1/4 - 20 -
23.00
-
(ICR) CER30 1" 2-1/2" 1/4 - 20 Glazed ceramic
10.00
-
(ICR) NL523W04-024 1" 3" 1/4 - 20 Glazed ceramic
11.00
-
(ICR) NL523W04-032 1" 4" 10 - 32 Glazed ceramic, chips on end
10.00
-
(ICR) NL523W04-048 1" 6" 1/4 - 20 -
22.00
20.00
(ICR) CER43 1-1/4" 8-7/8" 1/4 - 20 Glazed ceramic, metal insert
20.00
-
(ICR) CER44 1-1/4" 3" 1/4 - 20 Glazed ceramic
18.00
-