Cut Sheet

RECESSED PLUG - STEEL/IRON
HUB
SIZE
3/8"
1/2"
3/4"
1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
3-1/2"
4"
CATALOG
NUMBER
THREAD
SPECIFICATION
3/8"- 18 NPT
1/2"- 14 NPT
3/4"- 14 NPT
1"- 11-1/2 NPT
1-1/4"- 11-1/2 NPT
1-1/2"- 11-1/2 NPT
2"- 11-1/2 NPT
2-1/2"- 8 NPT
3"- 8 NPT
3-1/2"- 8 NPT
4"- 8 NPT
PLUG
LENGTH A
37/64” (14.7)
19/32” (15.1)
19/32” (15.1)
5/8” (15.9)
1” (25.4)
1” (25.4)
1” (25.4)
1-5/32” (29.4)
1-5/32” (29.4)
1-5/16” (33.3)
1-5/16” (33.3)
1/4” Allen key
1/4” Allen key
5/16” Allen key
3/8” Allen key
3/4” Square
3/4” Square
3/4” Square
1/4” Slot
1/4” Slot
1/4” Slot
1/4” Slot
RECESS
DRIVE SIZE
RECESSED PLUG - KILLARK ALUMINUM
CUP/PLUG • FITTINGS
THREADED INSERT PLUGS RECESSED STYLE
F68
FEATURES-SPECIFICATIONS
F
Application
• To close up a tapped hole or hub
Features
• Threaded hubs (NPT)
Material/Finish
Copper-free Aluminum — 1/4"- 4"
(less than 4/10 of 1%)
• Natural Finish
Steel — 1/2"- 1"
• Zinc Plated
Iron — 1-1/4"- 4"
• Zinc Plated
For square head plugs see
following page.
HUB
SIZE
Class I Groups A,B,C,D
Class I, Zone 1, Groups IIC, IIB, IA
Class II Groups E,F,G
Class III
UL Standards 886 and 1203
CSA Standard: C22.2 No. 30
Listed File No. E 10514
Certified File No. LR11716
3/8"
1/2"
3/4"
1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
3-1/2"
4"
Recessed Plug
Cup - 375 to 6
Plug 375 to 3
PLUG375
PLUG1
PLUG2
PLUG3
PLUG4
PLUG5
PLUG6
PLUG7
PLUG8
PLUG9
PLUG10
CUP-375
CUP-1
CUP-2
CUP-3
CUP-4
CUP-5
CUP-6
CUP-7
CUP-8
CUP-9
CUP-0
CATALOG
NUMBER
Recessed Plug
Cup - 7 to 8
Plug 7 to 10
Recessed Plug
Plug 4 to 6
Recessed Plug
Cup - 9 to 0
THREAD
SPECIFICATION
3/8"- 18 NPT
1/2"- 14 NPT
3/4"- 14 NPT
1"- 11-1/2 NPT
1-1/4"- 11-1/2 NPT
1-1/2"- 11-1/2 NPT
2"- 11-1/2 NPT
2-1/2"- 8 NPT
3"- 8 NPT
3-1/2"- 8 NPT
4"- 8 NPT
PLUG
LENGTH A
37/64” (14.7)
19/32” (15.1)
19/32” (15.1)
5/8” (15.9)
1” (25.4)
1” (25.4)
1” (25.4)
1-5/32” (29.4)
1-5/32” (29.4)
1-5/16” (33.3)
1-5/16” (33.3)
1/4” Allen key
1/4” Allen key
5/16” Allen key
3/8” Allen key
1/2” Allen key
1/2” Allen key
1/2” Allen key
1/4” Slot
1/4” Slot
Pry Tabs
Pry Tabs
RECESS
DRIVE SIZE
For ATEX and IEC Ex certified
Recessed Style Insert Plugs,
contact factory.
Recessed Plug Recessed Plug Recessed Plug
CUP-375 to 6
PLUG 375 to 3
CUP-7 to 8
PLUG 7 to 10
PLUG 4 to 6 CUP-9 to 0
Recessed Plug
F68