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Tri-Wing®
Economical Tri-Wing® tamper-resistant screws are the common choice for high volume assembly operations while offering a minimal degree of security. Machine & sheet metal screws are offered in a Pan-Head design and OpsitTM reverse thread.

We also carry a large range of drivers and bits specific to each type of security screw. Choose the correct size of Tri-Wing security screws below, as well as the driver or bit to accompany them.

PAN HEAD / SHEET METAL SCREWS
SIZEPART NO.
#4AB X 3/8 PAN HD TRI-WING SMS, 18-8 SS3.4AB38PS
#4AB X 3/4" PAN HD TRI-WING SMS, 18-8 SS3.4AB34PS
#4AB X 1/2 PAN HD TRI-WING SMS, 18-8 SS3.4AB12PS
#6A X 1/2 PAN HD TRI-WING SMS, 18-8 SS3.6A12PS
#6A X 3/4 PAN HD TRI-WING SMS, 18-8 SS3.6A34PS
#6A X 1 PAN HD TRI-WING SMS, 18-8 SS3.6A1PS
#6A X 1-1/4 PAN HD TRI-WING SMS, 18-8 SS3.6A114PS
#6A X 1-1/2 PAN HD TRI-WING SMS, 18-8 SS3.6A112PS
#8A X 1/2 PAN HD TRI-WING SMS, 18-8 SS3.8A12PS
#8AB X 5/8 PAN HD TRI-WING SMS, 18-8 SS3.8AB58PS
#8A X 3/4 PAN HD TRI-WING SMS, 18-8 SS3.8A34PS
#8A X 1 PAN HD TRI-WING SMS, 18-8 SS3.8A1PS
#8A X 1-1/4 PAN HD TRI-WING SMS, 18-8 SS3.8A114PS
#8A X 1-1/2 PAN HD TRI-WING SMS, 18-8 SS3.8A112PS
#10A X 1/2 PAN HD TRI-WING SMS, 18-8 SS3.10A12PS
#10A X 3/4 PAN HD TRI-WING SMS, 18-8 SS3.10A34PS
#10A X 1 PAN HD TRI-WING SMS, 18-8 SS3.10A1PS
 

PAN HEAD / MACHINE SCREWS
SIZEPART NO.
6-32 X 1/4 PAN HD TRI-WING MS, 18-8 SS3.63214PS
6-32 X 3/8 PAN HD TRI-WING MS, 18-8 SS3.63238PS
6-32 X 1/2 PAN HD TRI-WING MS, 18-8 SS3.63212PS
6-32 X 3/4 PAN HD TRI-WING MS, 18-8 SS3.63234PS
6-32 X 1 PAN HD TRI-WING MS, 18-8 SS3.6321PS
8-32 X 3/8 PAN HD TRI-WING MS, 18-8 SS3.83238PS
8-32 X 1/2 PAN HD TRI-WING MS, 18-8 SS3.83212PS
8-32 X 3/4 PAN HD TRI-WING MS, 18-8 SS3.83234PS
8-32 X 1 PAN HD TRI-WING MS, 18-8 SS3.8321PS
10-32 X 1/2 PAN HD TRI-WING MS, 18-8 SS3.10312PS
10-32 X 3/4 PAN HD TRI-WING MS, 18-8 SS3.10334PS
10-32 X 1 PAN HD TRI-WING MS, 18-8 SS3.1031PS
10-24 X 1/2 PAN HD TRI-WING MS, 18-8 SS3.10212PS
10-24 X 3/4 PAN HD TRI-WING MS, 18-8 SS3.10234PS
10-24 X 1 PAN HD TRI-WING MS, 18-8 SS3.1021PS
 

BITS ONLY
SIZEPART NO.
W1 TRI-WING POWER BIT3B.W1
W2 TRI-WING POWER BIT3B.W2
W3 TRI-WING POWER BIT3B.W3
W4 TRI-WING POWER BIT3B.W4
W5 TRI-WING POWER BIT3B.W5
 

DRIVERS COMPLETE-HANDLE WITH BIT
SIZEPART NO.
W2 TRI-WING DRIVER3D.W2
W3 TRI-WING DRIVER3D.W3
W4 TRI-WING DRIVER3D.W4
W5 TRI-WING DRIVER3D.W5
 

Tamperproof
Screw Co., Inc.

30 Laurel Street
Hicksville, NY 11801

Phone: 516-931-1616
Fax: 516-931-1654