Rigid and Intermediate Metal Conduit Fittings
UL Listed raintight and CSA Certified watertight and dusttight.
Steel/Malleable Iron and Aluminum Bullet® Hub Connectors* †
• Available in steel/malleable iron (steel through 1")
with nylon-insulated throat — with or without
Series 106 bonding locknut
• Also available in aluminum without insulated throat
• When used with neoprene O-ring, provides watertight
threaded hub on enclosures
• UL Listed 105° C
• Look for the unique T&B blue color ensuring
the highest quality fitting
CAT. NO.
STEEL/
M.I.
370
371
372
373
374
375
376
377
378
379
381
382
ALUM.**
STEEL/M.I.
W/LOCKNUT
HUB
SIZE
(IN.)
A
370AL
371AL
372AL
373AL
374AL
375AL
—
—
—
—
—
—
401
402
403
404-TB
405
406-TB
407
408
409
410-TB
—
—
⁄2"
3
⁄4
1"
11⁄8"
11⁄2"
2"
21⁄2"
3"
31⁄2"
4"
5"
6"
13⁄8
15⁄8
23⁄32
29⁄16
33⁄32
35⁄8
41⁄8
5
59⁄16
63⁄16
8
93⁄16
1
* Suitable for hazardous locations use in Class I, Div. 2; Class II, Div. 2; Class III, Div. 1 and 2
where general purpose equipment is specifically permitted per NEC Section 500-2(a).
** Aluminum not available with insulated throat.
MAX. WALL
THICKNESS
(IN.)
DIMENSIONS (IN.)
B
C
11⁄4
11⁄4
13⁄8
15⁄8
15⁄8
15⁄8
17⁄8
21⁄2
21⁄2
21⁄2
31⁄8
31⁄8
⁄4
⁄4
7
⁄8
1
1
1
11⁄8
11⁄2
11⁄2
11⁄2
⁄16
⁄16
5
⁄16
5
⁄16
5
⁄16
5
⁄16
3
⁄8
1
⁄2
1
⁄2
1
⁄2
1
⁄2
1
⁄2
3
5
3
5
Available with DURA-PLATE® finish.
UL File No. E-23018
For Stl.: CSA File No. 2284
† UL Listed rain tight and CSA Certified watertight and dust tight
For AL.: CSA File No. 0637
Spacing Chart for Bullet® Hubs
⁄2
1
⁄2
⁄4
1
11⁄4
11⁄2
2
21⁄2
3
31⁄2
4
5
6
1
3
A-16
1 ⁄16
—
—
—
—
—
—
—
—
—
—
—
7
⁄4
1
11⁄4
CENTER-TO-CENTER SPACING
CONDUIT SIZES
11⁄2
2
21⁄2
1 ⁄8
13⁄4
—
—
—
—
—
—
—
—
—
—
1 ⁄4
17⁄8
2
—
—
—
—
—
—
—
—
—
2 ⁄8
21⁄4
23⁄8
211⁄16
—
—
—
—
—
—
—
—
2 ⁄8
21⁄2
25⁄8
215⁄16
31⁄8
—
—
—
—
—
—
—
3
5
3
www.tnb.com
1
3
2 ⁄8
23⁄4
27⁄8
31⁄4
31⁄2
33⁄4
—
—
—
—
—
—
5
United States
Tel: 901.252.8000
800.816.7809
Fax: 901.252.1354
2 ⁄8
3
31⁄8
31⁄2
33⁄4
4
41⁄4
—
—
—
—
—
7
3
31⁄2
4
5
6
3 ⁄16
31⁄2
35⁄8
4
41⁄8
41⁄2
43⁄4
51⁄8
—
—
—
—
3 ⁄2
33⁄4
37⁄8
41⁄4
43⁄8
43⁄4
5
53⁄8
55⁄8
—
—
—
3 ⁄8
41⁄8
41⁄4
41⁄2
43⁄4
5
53⁄8
53⁄4
6
61⁄4
—
—
4 ⁄8
413⁄16
415⁄16
55⁄16
77⁄16
53⁄4
6
63⁄8
63⁄4
71⁄8
8
83⁄4
55⁄16
51⁄2
511⁄16
53⁄4
63⁄16
61⁄2
63⁄4
71⁄8
71⁄2
77⁄8
83⁄4
91⁄2
5
1
Technical Services
Tel: 888.862.3289
7
7
MIN. SPACE FROM
CENTER OF
KO
BULLET® HUB TO DIAMETERS
WALL OF BOX
(MIN.)
⁄4
⁄8
11⁄8
13⁄8
15⁄8
17⁄8
21⁄8
25⁄8
27⁄8
31⁄4
4
43⁄4
3
7
7
⁄8
11⁄8
13⁄8
13⁄4
2
21⁄2
3
35⁄8
41⁄8
45⁄8
51⁄2
61⁄2