Tools & Markers
FC
Frangible Couplings
Crouse-Hinds frangible couplings are designed to shear at a defined force.
Their use protects the integrity of the mounted floor flange, and often
minimizes the damage to impacted signs, elevated lighting, and navigational/
approach aids. Frangible couplings allow repairs to take place in minimal time.
D
T
H1
Note: Couplings are intended for use in application listed. Use of couplings in
applications not listed is done at the risk of user and may result in premature or
catastrophic failure.
This representational drawing
provides reference for the
frangible coupling dimensions
listed in the following tables.
H
B
The use of these couplings in non-approved applications should be checked with
Crouse-Hinds Engineering department.
Examples
Pictures are
not to scale.
Signs
60285
Threading
Application
Sign (AGS-1)
Type
Straight
T-Inside
None
62245
60287
Dimensions (inches)
T-Outside
None
B-Outside
2-111/2 NPSM
H
5.803
H1*
H
D
1.939
FInish
Natural
Aluminum
60647
61062-1
Static Load
Breaking Strength
(FT-LBS@1FT HT)
Part
Number
900
60647-1
900
60647-2
1329
60647-4
1540
60647-3
62245-1
Sign (AGS-2)
Straight
None
None
2-111/2
NPSM
5.77
—
—
Natural
Aluminum
62245-2
**
62245-3
62245-4
62245-5
Sign
Straight
Tapered
None
213/32-16
—
—
2-111/2 NPT
3.875
1.96
2
2-111/2
5.062
2.125
2.187
2-111/2 NPSM
5.77
—
—
Straight
None
None
2-111/2 NPSM
5.77
—
—
Natural
Aluminum
Sign
(AGS-Canada)
Tapered
None
2-111/2 NPT
2-111/2 NPT
4
H
1.939
Natural
Aluminum
Sign (Unlighted)
Straight
6.6
Sign (ICAO)
None
None
NPT
Natural
Aluminum
None
Straight
UNF
5.77
5/8-18 UNF
Sign
(Fiberglass)
None
None
2-111/2 NPSM
2-111/2 NPSM
22.5
—
—
Natural
Aluminum
Natural
Aluminum
1274-1840
60683-4
500
60287
510-710
61062-1
1065-1540
60683-6
749-1082
60683-8
1000
60285-1
1500
60285-3
1725
60285-2
**
62202
*H indicates a full length straight through interior
**Static Load Test Data Not Available. Contact Crouse-Hinds.
www.chalp.com
Examples
Pictures are
not to scale.
Elevated Lighting
50186
Threading
Application
Type
T-Inside
T-Outside
Dimensions (inches)
B-Outside
11/2 -12 UNF
ERL, HRLQ
Straight
H
2.69
2-111/2 NPSM
1.5
D
FInish
1.174
Yellow
Plastic
1.19
3.25
1.475
1.19
3.33
1.49
1.2
Painted
Yellow
50049
50184
Static Load
Breaking Strength
(FT-LBS@1FT HT)
Part
Number
100
50049†
150
50186†
50184
450-490
60683-E
RGL
Straight
None
None
2-111/2 NPSM
5.77
—
—
Natural
Aluminum
1300-2100
60683-10
ELM, HRL
(Military)
Tapered
None
None
2-111/2 NPT
4.75
3
1.813
Painted
Yellow
500
FL949A
***
1.25-16
3.875
1.813
1.5
3.719
H
1.75
Canada ERL
Tapered
None
None
2-111/2 NPT
5.25
7.625
Elev. Stop Bar
H1*
3.07
None
None
FL949A
Straight
None
None
2-111/2 NPT
3.563
H
2.1
Natural
Aluminum
40818
**
Painted
Orange
Painted
Yellow
6.38
P1215
P1206
P1211
**
50306
*H indicates a full length straight through interior
**Static Load Test Data Not Available. Contact Crouse-Hinds.
***Tapered at bottom; straight inside.
†
When used with Crouse-Hinds Floor Flanges, order Reducer, Part Number 5925.
Example
Picture is not
to scale.
Approach & Navigational Aids
FL971
Threading
Application
Type
Straight
PAPI
Tapered
T-Inside
5/8-18 UNF
1-111/2 NPT
None
Dimensions (inches)
T-Outside
B-Outside
H
H1
D
FInish
Static Load
Breaking Strength
(FT-LBS@1FT HT)
None
2-111/2 NPSM
5.77
—
—
Natural
Aluminum
*
60683-7
1274-1840
60683-9
2-111/2 NPT
2-111/2 NPT
4.75
3
1.813
Painted
Yellow
500
FL971
Static Load
Breaking Strength
(FT-LBS@1FT HT)
Part
Number
500
ML4913
Part
Number
Miscellaneous
Threading
Dimensions (inches)
Application
Type
T-Inside
T-Outside
B-Outside
H
H1
D
FInish
Wind Cone
Tapered
None
None
2-111/2 NPT
4.75
3
1.813
Natural
Aluminum
*Static Load Test Data Not Available. Contact Crouse-Hinds.
Home Office: United States – +1 860-683-4300
International Offices: Canada • China • Dubai • Mexico • Brazil
Revised - 6/11
Visit www.chalp.com for the
complete current list of renewal
parts and product manuals.
6.7
Tools & Markers
Floor Flanges
Circular Floor Flange
Rectangular Floor Flange
6.00 DIA
4.75 DIA FC
1.38
0.13 TYP
1.38
0.31
WINDSOR CT USA
0.63 DIA,
4 HOLES
CENTERLINE
2 - 11-1/2
NPSM
THREAD
P/N
25684-1
45º
TYP
60831
TO
PARALLEL
Note:For use with frangible
couplings with a “B”
dimension of 1-1/2 UNF,
add Reducer 5925.
7.88
4.75
0.09 x 45º
CHAMFER
4.88
4.88
CROUSE - HINDS
2 - 11-1/2 NPSM THREAD
0.63 x 0.94 SLOT, 2 PLACES
Part Numbers
Description
Part Number
Circular Floor Flange
25684-1
Rectangular Floor Flange
60831
Reducer5925
6.8
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