Spaenaur

Inch
Pouces
G
H L F
E
®
80° REF
P
Weld Screws
Vis à souder
PROJECTION WELD
SCREWS “UN” SERIES
The UN Series, Projection Weld Screws are manufactured
from low carbon, high welding quality steel.
These projection weld screws are designed with a
continuous weld ring projection under the head. This
feature allows for flush mounting in hermetically sealed
applications.
B
CATALOG 13
Grey area on chart below indicates the available
size range of UN Projection Weld Screws.
Can be manufactured to meet specific requirements
in production run. Prices are available upon
request.
Not Plated
SPAENAUR Numbers listed
below can usually be shipped
immediately from stock.
Unit Package 100
Size #6 #8 #10 1/4" 5/16" 3/8"
Head
Diameter (F) .312" .375" .437" .562" .750" .875"
Head
Thickness (H) .047" .062" .062" .078" .094" .109"
Projection
Height (E) .013" .015" .017" .025" .030" .034"
Projection
Width (P) .026" .030" .033" .049" .058" .067"
Locating
Circle (G) .219" .281" .328" .422" .547" .641"
Threads Per Inch 32 32 24 32 20 28 18 24 16 24
Length
Under Head (L)
ORDER BY SPAENAUR NUMBERS LISTED BELOW
3/16"
1/4"
3/8"
1/2" 573-050
9/16"
5/8" 573-053*
3/4" 573-057
7/8"
1" 573-051 573-052
1-1/8"
1-1/4" 573-062*
1-1/2"
1-3/4" 573-055
2" 573-056
2-1/4"
2-1/2"
2-3/4"
3"
Typical weld settings for use with
C-1010 steel only. Thickness
range of steel sheets, 24 gauge
to 6 gauge. Steel sheets must be
free from scale, rust and dirt and
be uncoated.
WELD TIME WELD PRESSURE WELD CURRENT
SIZE IN CYCLES IN POUNDS IN AMPS
#6 3 to 8 300 to 900 9,000 to 18,000
#8 4 to 9 400 to 1,000 10,000 to 19,000
#10 5 to 10 700 to 1,000 13,000 to 20,000
1/4" 5 to 14 900 to 1,500 18,000 to 24,000
5/16" 8 to 19 1,200 to 2,000 22,000 to 42,000
3/8" 10 to 24 1,500 to 2,500 28,000 to 50,000
*RW SERIES (Not Gripco)
Tel: 1-800-265-8772 Fax: 519-744-0818
B157
16 May 03