Cut Sheet

Rigid and Intermediate Metal Conduit Fittings
A-27
United States
Tel: [phone]
800.816.7809
Fax: [phone]
Technical Services
Tel: [phone]
www.tnb.com
Application
• To connect and effectively bond threadless
rigid metal conduit or intermediate metal
conduit to a box or enclosure or to couple
ends of threadless conduit
Features
• Thickwall steel or malleable iron body
• Hardened hex head cup point screw
to provide high-quality bond
• Screw captivated, will not vibrate loose
• Nylon insulated throat meets and exceeds
all code requirements for bushing:
(i) Prevents thinning of insulation
(ii) Reduces installation effort
(iii) Prevents first thread damage
• Coupling provided with positive center stop
• Suitable for concrete-tight application
• Capable of carrying ground fault currents
up to 10,000 amps RMS (
1
⁄2" through 1
1
⁄2" size)
and 20,000 amps RMS (2" and above sizes).
Standard Material
Body . . . . . . . . . . . . . . . . . . .
1
⁄2" thru 2" Steel
2
1
⁄2" thru 4" Malleable Iron
Locknut. . . . . . . . .
1
⁄2" thru 2" Steel (hardened)
2
1
⁄2" thru 4" Malleable Iron
Screw . . . . . . . . . . . . . . . . . . Steel (hardened)
Insulator . . . . . . . . . . . . . . . . . . . . . . . . Nylon
Standard Finish
Electro Zinc Plated &
Chromate Coated
Listings/Compliances
UL (UL File No: E-23018)
CSA (LR-2884, LR-4484)
UL 514B
CSA C22.2 No. 18
NFPA 70
NEMA FB1
Federal Specification A-A-50553
Federal Standard H-28 (Threads)
Set-Screw Connector/Coupling
(For Threadless Rigid Metal Conduit and Intermediate Metal Conduit)
8125 Series
• Captive hex head screws tighten
down onto conduit for positive holding
strength and ground
• Furnished with insulated throats
to reduce wire-pulling effort by
as much as 50%
• Approved concrete-tight
CAT . CONDUIT DIMENSIONS (IN.)
NO. SIZE A B
8125
1
⁄2"1
3
⁄8
13
⁄32
8225
3
⁄4"1
1
⁄2
7
⁄16
8325 1" 1
3
⁄16
35
⁄64
8425 1
1
⁄4"2
5
⁄8
8525 1
1
⁄2"2
5
⁄16
5
⁄8
8625-TB 2" 2
7
⁄16
11
⁄16
8725-TB 2
1
⁄2"3
3
⁄8 1
8825 3" 3
7
⁄16 1
8855 3
1
⁄2"3
7
⁄8 1
1
⁄16
8975 4" 4
3
⁄16 1
1
⁄8
Sizes
1
⁄ 2 "–2" made of steel. Sizes 2
1
⁄ 2 "–4" are malleable iron.
Available with DURA-PLATE
®
Finish.
UL File No. E-23018 CSA File No. 2884
Eliminates the need for conduit threading!
Insulated Set-Screw Connector
No need to thread conduit ends when joining rigid conduit!
Set-Screw Coupling
CAT. CONDUIT DIMENSION (IN.)
NO. SIZE A
8124
1
⁄2"2
1
⁄2
8224
3
⁄4"2
11
⁄16
8324-TB 1" 2
27
⁄32
8424 1
1
⁄4"3
8524 1
1
⁄2"3
3
⁄8
8624 2" 3
5
⁄8
8724 2
1
⁄2"3
7
⁄8
8824-TB 3" 4
1
⁄4
8854 3
1
⁄2"4
15
⁄16
8974 4" 5
3
⁄8
Sizes
1
⁄ 2 "–2" made of steel; sizes 2
1
⁄ 2 "–4" are malleable iron.
Available with DURA-PLATE
®
Finish.
UL File No. E-23018 CSA File No. 2884
8124 Series
8125 Series
8124 Series
• Captive hex head screws
provide positive holding
strength and ground continuity
• Approved concrete-tight