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INSTALLATION GUIDE
128B
STAINLESS STEEL FITTINGS FOR LIQUID-TIGHT
FLEXIBLE METALLIC CONDUIT
This guide shows the proper method of installing liquid-tight T&B® Fittings. The selection of
the proper raceway, the most appropriate T&B Fitting plus correct installation techniques
will provide both the high performance and reliability demanded by specifying engineers.
The following are the characteristics and specifications for the selection of the appropriate
T&B Fittings.
LFMC CUTTING INSTRUCTIONS
1. Cut the end of the flexible conduit with a clean square cut.
1). Use metal jig. (available from conduit manufacturers)
2). Use 32 Tooth/In. no. set, sharp hacksaw.
3). For high production use
24-32 Tooth/In. set, power
band saw, not more than
400’/minute.
DO NOT USE ABRASIVE WHEEL.
SPECIFICATIONS FOR LIQUID-TIGHT T&B® FITTINGS
• UL Listed per UL514B and UL50E.
• CSA Certified per CSA C22.2 No.18.3 and 94.2
• NPT threads per ANSI/ASME B1.20.1
• ISO Metric threads per EN 60423.
• Replace the "x" in the part number by the following:
"3" for straight fitting, "4" for 45° angle, "5" for 90° angle.
Ex. 5342SST6 for 1/2" NPT at 45°.
• Add (HT) to above cat. numbers (Ex. 5331SST6HT) for
high temperature version.
• Add (-6) to above cat. numbers (Ex. 5331SST6-6) for
version with stainless steel ground cone (not listed).
• Add (-6HT) to above cat. numbers (Ex. 5331SST6-6HT)
for high temperature version with stainless steel
ground cone (not listed).
ASSEMBLY
A. Slide on gland nut.
B. Slide on nylon sealing ring.
C. Thread in SAFE-EDGE® ground cone.
D. *For knockout applications, use T&B® Series LNSS
locknuts and Series 5260 seal gaskets. Refer to table.
(Purchase separately)
E. Tighten gland nut to UL recommended value,
Refer to table.
SS GLAND NUT
LIQUID-TIGHT
FLEXIBLE METAL
CONDUIT
NYLON
SEALING RING
LOCK TO BODY
SAFE-EDGE
GROUND
CONE
®
SS BODY
LOCKNUT
(PURCHASE
SEPARATELY)
BOX WALL
Stainless Steel 316 Liquit-tight Fittings Seal Gasket 1) Gland Nut Locknuts
Part No.
53x1SST6... 3/8” 12 16
53x2SST6... 1/2” 16 20 1/2” NPT 5262 300 33.9 LNSS/050 80 9.0
53x3SST6... 3/4” 21 25 3/4” NPT 5263 500 56.5 LNSS/075 110 12.4
53x4SST6... 1” 27 32 1” NPT 5264 700 79.1 LNSS/100 135 15.3
53x5SST6... 1-1/4 35 40 1-1/4” NPT 5265 1,000 113 LNSS/125 160 18.1
53x6SST6... 1-1/2” 41 50 1-1/2” NPT 5266 1.200 136 LNSS/150 190 21.5
53x7SST6... 2” 53 63 2” NPT 5267 1.600 181 LNSS/200 240 27.1
93x0SST6...
93x2SST6...
93x3SST6...
93x4SST6...
93x5SST6...
93x6SST6...
93x7SST6...
1) Required for liquid-tight and dust-tight installations
2) These products are Intended for use with threaded openings. For use in thr
3) UL, CSA & NEMA recommendation for tightening procedure: “A locknut is to be hand-tightened and then further tightened 1/4 turn with a hammer and a standard screwdriver or by
an equivalent method.”
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2)
Trade Size
Inch Metric BS EN lb-in (UL) N-m Ib-in N-m
3/8” 12 16
1/2” 16 20 M20 300 33.9 LNSS/M20 80 9.0
3/4” 21 25 M25 500 56.5 LNSS/M25 110 12.4
1” 27 32 M32 700 79.1 LNSS/M32 135 15.3
1-1/4” 35 40 M40 1.000 113 LNSS/M40 160 18.1
1-1/2” 41 50 M50 1.200 136 LNSS/M50 190 21.5
2” 53 63 M63 1.600 181 LNSS/M63 240 27.1
Style
Straight
45⁰ & 90⁰
Straight
45⁰ & 90⁰
WARRANTY: (www.tnb.com/ecpwarranty)
Thread
Type
3/8” NPT 5261 235 26.6 LNSS/038 70 7.9
M16
ough hole knockouts, use recommended locknut and fastening procedures.
Thomas & Betts Corporation
Memphis, Tennessee
Part No.
Supplied with
Seal O-Ring as
standard
www.tnb.com
Tightening Torques
235 22.6 LNSS/M16 70 7.9
Part No.
© 2018 Thomas & Betts. All Rights Reserved.
3)
Tightening Torques
TA05037 B
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