Insulators: Pillars & Standoffs
HV Standoff Insulator
Close up of Top Clamp
(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
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(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
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(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
Glazed Ceramic Standoff
1/2" x 15"
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(ICR) CER45
Glazed ceramic standoff. 1/2" x 15"L. 8-32 tap on each end.
$18 each
3" Navy Standoff
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(ICR) 3G1300-48
3" navy standoff. 1/4-20 thread. 3"H x 1"D. 2-1/4" c-c.
$7.95 each - $7 (10+)
Solid PTFE
Standoff Insulator
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(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
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(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.
$12 each - $11 (10+)
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.
$14 each - $12 (10+)
(ICR) 3G1300-160-2
Same as above but brass cap has two 3/16" threaded holes.
$13 each - $11 (10+)
(ICR) 3G1300-240
Same as above but 6" high. Two 3/16" holes.
$16 each - $14 (10+)
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.
$12 each - $11 (10+)
Horn Gap Static / Lightning
Dissipation
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(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
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(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
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(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.
$14 each - $13 (10+)
3" Navy Ceramic
Standoff Insulator
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(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
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(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
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(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
Ceramic Insulator
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(ICR) NL523W03-024
Ceramic insulator. Mil-spec glazed ceramic. 3"L x 3/4". 10-32 thread.
$15 each

Standoff Lag
#10 x 2"L Lag

Standoff Lag w Ceramic Insert
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(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.
*** SOLD OUT ***
Ceramic Insulator Cone
Conical Ceramic Insulator
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(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
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(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+)
CRL Ceramic Insulator
CRL Ceramic Insulator
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(ICR) NS5W0312
CRL glazed ceramic insulator. 0.75" DIA x 1.5" L. 2 threaded mount holes, 0.165" I.D.
$4.50 each
Tinymite Steatite Insulator
Tinymite Steatite Insulator (ICR) 22
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(ICR) 22
E.F. Johnson white glaze screw top, 2 nuts. NOS. 1"H, 0.80" mounting centers.
$7.50 each - $7(3+)
Non-Glazed Ceramic
Feed-thru Standoff
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(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.
$2 each
B: (ICR) 22J/B
Optional metal reinforcement. 5/8" high.
20¢ each
Ceramic Standoff
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(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
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(ICR) S01.75
Glazed ceramic standoff insulator. Stackable. 1-3/4" diameter x 3/4" high. 3/8" hole.
$3 each
CRL Ceramic Insulator
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(ICR) NL523W12-008
CRL ceramic insulator. Glazed exterior unglazed ends. 0.75" W x 0.75" HT x 1" L. 0.157" I.D. threaded hole each end. NOS.
$5 each - $4.50 (10+)
Glazed Ceramic Square
Insulator
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(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
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(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

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(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




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(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). Collins P/N: 309-1976-020.
$17.75 each

Ceramic Insulator

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(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

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(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

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(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+)

Ceramic Insulator Plate

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(ICR) PLATE-2
Ceramic insulator plate. Non-glazed. 0.642" inside diameter. 1.5" outside diameter. 0.188" thick. 6 mounting holes 0.085"D.
$4.75 each - $4 (6+)

Non-Glazed Ceramic
Disk Spacer

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(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+)

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+)		 Add
(ICR) CER38 3/8" 1-3/8" 6 - 32 Millen, Unglazed ceramic 2.50 2.10 Add
(ICR) CER40 0.410" 3/4" 6 - 32 Millen, Unglazed ceramic 2.00 1.50 Add
(ICR) CER6 3/8" 2" 6-32 ALT P/N: NS5W0016; NL523W01-016 4.50 - Add
(ICR) CER8 1/2" 1-1/4" 8 - 32 Millen, Glazed ceramic 3.50 3.00 Add
(ICR) CER19 3/4" 4" 1/4 - 20
 Glazed Ceramic, ALT P/N: NL523W03-032. NOS. 15.00 - Add
(ICR) CER20 1/2" 1-1/2" 6 - 32
 Mfg. P/N: NL523W02-012 4.00 3.50 Add
(ICR) 34000 1/2" 2" 8 - 32 Millen, Glazed ceramic 4.75 4.20 Add
(ICR) CER32 1/2" 2.5" 8 - 32 Glazed ceramic 5.00 4.50 Add
(ICR) CER15 1/2" 12.5" #10 - 12.00 11.00 Add
(ICR) 31002 5/8" 2-5/8" #4 Millen, Unglazed ceramic 8.50 7.25 Add
(ICR) CER21 3/4" 1" 10 - 32 Glazed ceramic 5.00 4.35 Add
(ICR) CER24 1/2" 3/4" 8 - 32 Glazed ceramic 5.00 4.50 Add
(ICR) 15005 3/4" 1-1/4" 10 - 32 Millen, Glazed ceramic 5.50 4.60 Add
(ICR) CER10 3/4" 2"L 8 - 32 Glazed ceramic, Picture 7.75 - Add
(ICR) CER17 1" 4"L 1/4 - 20 Glazed ceramic, Picture 20.00 - Add
(ICR) CER39 0.95" 0.312" #4 Millen, Unglazed ceramic 1.90 1.38 Add
(ICR) CER26 1" 5" 1/4 - 20 - 23.00 - Add
(ICR) CER30 1" 2-1/2" 1/4 - 20 Glazed ceramic   SOLD OUT
(ICR) NL523W04-032 1" 4" 10 - 32 Glazed ceramic, chips on end 10.00 - Add
(ICR) NL523W04-048 1" 6" 1/4 - 20 - 22.00 20.00 Add
 
 

Isolantite Round
Standoff Insulators

Type 397
 
Part Number L" x D" TAP Price Each  
NL523W02-004 1/2" x 1/2" 8-32 Call for availability/price
NL523W02-005 5/8" x 1/2" 8-32 Call for availability/price
NL523W02-006 3/4" x 1/2" 8-32 Call for availability/price
NL523W02-008 1" x 1/2" 8-32 Call for availability/price
NL523W02-010 1-1/4" x 1/2" 8-32 Call for availability/price
NL523W02-012 1-1/2" x 1/2" 8-32 Call for availability/price
NL523W02-016 2" x 1/2" 8-32 Call for availability/price
NL523W02-020 2-1/2" x 1/2" 8-32 Call for availability/price
NL523W02-024 3" x 1/2" 8-32 Call for availability/price
 

Type 337
 
Part Number L" x D" TAP Price Each  
NL523W03-006 3/4" x 3/4" 10-32 Call for availability/price
NL523W03-008 1" x 3/4" 10-32 Call for availability/price
NL523W03-010 1-1/4" x 3/4" 10-32 Call for availability/price
NL523W03-012 1-1/2" x 3/4" 10-32 Call for availability/price
NL523W03-016 2" x 3/4" 10-32 Call for availability/price
NL523W03-018 2-1/4" x 3/4" 10-32 Call for availability/price
NL523W03-020 2-1/2" x 3/4" 10-32 Call for availability/price
NL523W03-024 3" x 3/4" 10-32 Call for availability/price
NL523W03-032 4" x 3/4" 10-32 Call for availability/price
NL523W03-040 5" x 3/4" 10-32 Call for availability/price
NL523W03-048 6" x 3/4" 10-32 Call for availability/price
 

Type 348
 
Part Number L" x D" TAP Price Each  
NL523W04-010 1-1/4" x 1" 1/4-20 Call for availability/price
NL523W04-012 1-1/2" x 1" 1/4-20 Call for availability/price
NL523W04-016 2" x 1" 1/4-20 Call for availability/price
NL523W04-020 2-1/2" x 1" 1/4-20 Call for availability/price
NL523W04-024 3" x 1" 1/4-20 Call for availability/price
NL523W04-028 3-1/2" x 1" 1/4-20 Call for availability/price
NL523W04-032 4" x 1" 1/4-20 Call for availability/price
NL523W04-036 4-1/2" x 1" 1/4-20 Call for availability/price
NL523W04-040 5" x 1" 1/4-20 Call for availability/price
NL523W04-044 5-1/2" x 1" 1/4-20 Call for availability/price
NL523W04-048 6" x 1" 1/4-20 Call for availability/price
NL523W04-000 7" x 1" 1/4-20 Call for availability/price
 

Type 3322 (Without Locking Holes)
 
L" x D" TAP Price Each  
1-1/2" x 1-1/4" 1/4-20 Call for availability/price
2" x 1-1/4" 1/4-20 Call for availability/price
2-1/2" x 1-1/4" 1/4-20 Call for availability/price
3" x 1-1/4" 1/4-20 Call for availability/price
4" x 1-1/4" 1/4-20 Call for availability/price
5" x 1-1/4" 1/4-20 Call for availability/price
6" x 1-1/4" 1/4-20 Call for availability/price
7" x 1-1/4" 1/4-20 Call for availability/price
8" x 1-1/4" 1/4-20 Call for availability/price
9" x 1-1/4" 1/4-20 Call for availability/price
 

Type 3322A (Without Locking Holes)
 
L" x D" TAP Price Each  
2" x 2" 1/4-20 Call for availability/price
3" x 2" 1/4-20 Call for availability/price
4" x 2" 1/4-20 Call for availability/price
5" x 2" 1/4-20 Call for availability/price
6" x 2" 1/4-20 Call for availability/price