Section B

Projection Weld Screws Vis à souder par bossage

Inch Pouce

®

PROJECTION WELD SCREWS “UN” SERIES The UN Series, Projection Weld Screws are manufac tured 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.

E

80° REF

B

P

F G

L

H

PKG QTY. 100

Not Plated

Size

1/4"

3/8"

Head Diameter (F) Head Thickness (H)

.562"

.875"

.078"

.109"

Projection Height (E) Projection Width (P) Locating Circle (G)

.025"

.034"

.049"

.067"

.422"

.641"

Threads Per Inch

20

16

Length Under Head (L)

ORDER BY SPAENAUR No. LISTED BELOW

573-053

5/8"

573-062

1-1/4"

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 300 to 900 400 to 1,000 700 to 1,000 900 to 1,500 1,200 to 2,000 1,500 to 2,500

IN AMPS

#6 #8

3 to 8 4 to 9

9,000 to 18,000 10,000 to 19,000 13,000 to 20,000 18,000 to 24,000 22,000 to 42,000 28,000 to 50,000

#10 1/4"

5 to 10 5 to 14 8 to 19 10 to 24

5/16"

CATALOG 14

3/8"

Weld Cycle Time - Cycle = 1/60th of a second.

B130

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