Metric Size, Steel
Horizontal Acting Toggle Clamps
With Safety Hook Latch, with Vertical Mounting Base
GN 820.4


RoHS Compliant

This line drawing is movable on the page...just click and drag!

This line drawing is movable on the page...just click and drag!


Specification
Toggle clamp and safety hook latch: Case-hardened sheet metal (steel C10),
zinc plated, blue passivated finish
Bearing pins tempered
Bearing rivets (for sizes 355 and 455) case-hardened
All moving parts lubricated with special grease
Hand grip: High quality, oil resistant red plastic
Neoprene spindle assembly (Type NLC):
Threaded stud: Steel, zinc plated, blue passivated finish
Spindle tip: Black neoprene rubber (CR), 85° shore A, vulcanized
Type NL: U-bar version with two flanged washers
Type NLC: U-bar version with two flanged washers and GN 708.1 Type A spindle
Type PL: Solid bar version with clasp

Information
GN 820.4 horizontal acting toggle clamps have a safety function whereby, during closing, a spring loaded safety hook latch ensures a secure locking connection. It prevents the inadvertent unlocking of the clamp due to vibrations or an accidental attempt of loosening / opening of the clamp. To open and release the clamp, pull up on the finger grip to disengage the safety hook latch mechanism (one hand operation).
They work according to the toggle principle: lever and clamping bar move in the opposite direction. They require less space for the clamping action.
Horizontal acting toggle clamps in the U-bar version with two flanged washers (Type NL) can accom-modate an application specific clamping screw. A spindle assembly with neoprene rubber tip is also included for Type NLC.
Type PL version can be utilized by welding the clasp, which can then accommodate an application specific hold-down fastener component, or by utilizing the bar in conjunction with GN 809 Clamp Mounts to hold the work piece in place.
For stainless steel version see GN 820.4I.
See also General Information on Toggle Clamps.

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Dimensions in:

millimeters
(inches)

Part Number
Size Ref.
Holding Capacity FH[N]
a~
b1
b2
b3
b4
d1 Thread
d2
h1~
Type NL
U Bar
Type NLC
U Bar with Spindle
Type PL
Solid Bar
75
900
20
(.79)
28
(1.10)
8
(.31)
4
(.16)
5.3
(.21)
M5 x .8
4.5
(.18)
45.5
(1.79)
130
1000
32
(1.26)
36
(1.42)
10
(.39)
5
(.20)
6.3
(.25)
M6 x 1.0
5.6
(.22)
64.5
(2.54)
230
1700
37
(1.46)
44
(1.73)
12
(.47)
6
(.24)
8.5
(.33)
M8 x 1.25
6.6
(.26)
75.5
(2.97)
355
1800
58
(2.28)
60
(2.40)
14
(.55)
7
(.28)
10.5
(.41)
M10 x 1.5
8.6
(.33)
102
(4.02)
455
3200
65
(2.56)
70
(2.76)
18
(.71)
10
(.39)
12.5
(.49)
M12 x 1.75
8.7
(.34)
120
(4.72)

Size Ref.
h2
h3
h4
h5
max.
l1~
l2~
l3~
l4
max.
l5
m1
m2
m3
r
s
w
Adj.
Range
75
29
(1.14)
11
(.43)
19
(.75)
14
(.55)
118
(4.65)
68
(2.68)
40
(1.57)
49.5
(1.95)
45
(1.77)
13.5
(.53)
3.5
(.14)
5
(.20)
43
(1.69)
4
(.16)
15
(.59)
130
44
(1.73)
16
(.63)
25.5
(1.00)
27.5
(1.08)
172
(6.77)
92
(3.62)
53
(2.09)
64
(2.52)
55
(2.17)
26
(1.02)
5.8
(.23)
8.8
(.34)
62
(2.44)
5
(.20)
17.5
(.69)
230
51
(2.01)
18
(.71)
30
(1.18)
27
(1.06)
196
(7.71)
109
(4.30)
63.5
(2.50)
78
(3.07)
68
(2.68)
26
(1.02)
6.5
(.26)
9
(.35)
73
(2.87)
6
(.24)
20
(.79)
355
69.5
(2.74)
22
(.87)
37
(1.46)
43
(1.69)
270
(10.63)
161
(6.34)
96
(3.78)
115
(4.53)
77
(3.03)
41
(1.61)
7.5
(30)
9.6
(.37)
110
(4.33)
7
(.28)
19
(.75)
455
80.5
(3.17)
26
(1.02)
43
(1.69)
48
(1.89)
306
(12.05)
186
(7.32)
116
(4.57)
135
(5.31)
100
(3.94)
41.5
(1.63)
11
(.43)
12.5
(49)
128
(5.04)
10
(.39)
33
(1.30)