257 THOMAS & BETTS, 257 Datasheet - Page 7
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257
Manufacturer Part Number
257
Description
Electrical
Manufacturer
THOMAS & BETTS
Datasheet
1.255.pdf
(7 pages)
Specifications of 257
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
Outer Diameter
47.625mm
Length
43.663mm
Body Material
Malleable Iron
External Diameter
47.625mm
Accessory Type
Squeeze Connector
Rohs Compliant
No
For Use With
Armored Cable And Flexible Metal Conduit
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
25701.201.184
Manufacturer:
TE
Quantity:
35 000
Part Number:
25702
Manufacturer:
UC
Quantity:
20 000
Company:
Part Number:
25710.213.009
Manufacturer:
TE
Quantity:
35 000
Part Number:
25738
Manufacturer:
AMS
Quantity:
20 000
For non-metallic
and armored cable
Duplex Clamp Connector
TITE-BITE
flexible metal cable firmly
in place with a single
screw!
Adapter — EMT to Flex
•
•
Armor-gripping saddle stays open by itself when cable is being inserted!
Two-Screw Connectors
•
•
•
One-piece fitting couples
Combination Coupling
CAT.
NO.
449-TB
Cable opening: max. .656, min. .250
Smooth plastic bushing protects conductor
insulation from rough edges of armored cable
and flexible metal conduit!
Anti-Short Bushing
Fast and easy installation!
Strap
Elongated bolt hole makes alignment easy, even when holes
in mounting surface are off center
Snap-on design holds strap in place
Formed steel body
Carefully round
bushing
Malleable iron construction
®
Metal Clad Cable, Armored Cable and Flexible Metal
design holds
FLEX TO EMT
3
⁄
8
SIZE
" -
1
⁄
2
"
CAT.
NO.
3301-TB**
3312-TB
** UL Listed for armored cable only.
United States
Tel: 901.252.8000
Fax: 901.252.1354
800.816.7809
CAT.
NO.
503TB
504
505-TB
CSA File No. 8994
UL File No. E-23018
MAX.
.656
.937
3
⁄
8
CABLE OPENING
" flexible metal conduit to
CAT.
NO.
291-TB
UL File No. E 1383
CSA File No. 2884
1
A
21
⁄
3 2
UL File No. E-23018
CSA File No. 2884
FLEX TO EMT
1
3
1" - 1"
⁄
⁄
2
4
SIZE
" -
" -
MIN.
.250
.500
1
3
⁄
⁄
2
4
"
"
Canada
Tel: 450.347.5318
Fax: 450.347.1976
UL File No. E 1383
K.O. SIZE
DIMENSIONS (IN.)
1
⁄
2
"
1
1
2
A
21
25
1
1
TRADE
⁄
⁄
⁄
3 2
3 2
3 2
B
11
SIZE
DIMENSIONS (IN.)
⁄
3
1
3 2
⁄
⁄
8
2
"
"
CAT. NO.
390
391
392
393
394
Colorized
Temperature Rating: 240° F
1
1
2
B
3
7
1
⁄
⁄
⁄
1 6
1 6
1 6
1
⁄
2
" EMT!
®
SIZE
K.O.
Technical Services
Tel: 888.862.3289
1
1
⁄
⁄
2
2
1
2
2
"
"
C
7
1
5
1
⁄
⁄
⁄
8
8
8
13
DIMENSIONS (IN.)
A
⁄
3 2
15
"
C
⁄
1 6
CSA File No. 2884
®
®
Conduit Fittings
SIZE
14-2, 14-3, 12-2
14-4, 12-3, 6-1, and 4-1
12-4, 10-2, 10-3 and 2-1
10-4, 8-2, 8-3, and 1-1
8-4, 6-2, 6-3, 4-2, 4-3, and 6-4
1
31
A
3
⁄
3 2
⁄
3 2
1
11
CAT. NO.
65-TB
DIMENSIONS (IN.)
B
⁄
1 6
"
®
A
B
1
1
B
5
5
⁄
1 6
⁄
8
A
®
CSA File No. 589
UL not applicable.
B
1
www.tnb.com
1
C
1
3
⁄
1 6
⁄
8
®
A
3
⁄
8
SIZE
" Flex
C
B
B
C
(MAX)
A
C
®
®
A-155