Socket Head Screws for Square-Drive Wrenches

Fully Threaded

Partially Threaded

No need for separate bits—these screws lock directly onto square-drive socket wrenches, reducing the risk of dropping parts during installation. With a head one and a half times taller than a standard socket head, these screws are easier to install in deep counterbored holes and other hard-to-reach places. They're made from 18-8 stainless steel and have good chemical resistance. Screws may be mildly magnetic. Length is measured from under the head.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Head

Socket

Head Profile Lg. Threading Min. Thread

Length Thread

Spacing Dia. Ht. Drive

Size Tensile

Strength, psi Each

18-8 Stainless Steel

1/4"-20

High 3/8" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A110 $2.78

High 1/2" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A111 2.87

High 5/8" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A112 3.12

High 3/4" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A113 3.62

High 7/8" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A114 3.69

High 1" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A115 3.75

High 1 1/4" Fully Threaded __ Coarse 7/16" 3/8" 1/4" 70,000 90340A116 4.00

High 1 1/2" Partially Threaded 1" Coarse 7/16" 3/8" 1/4" 70,000 90340A117 4.11

High 2" Partially Threaded 1" Coarse 7/16" 3/8" 1/4" 70,000 90340A118 4.15

5/16"-18

High 3/4" Fully Threaded __ Coarse 15/32" 15/32" 1/4" 70,000 90340A119 4.08

High 1" Fully Threaded __ Coarse 15/32" 15/32" 1/4" 70,000 90340A120 4.67

High 1 1/4" Fully Threaded __ Coarse 15/32" 15/32" 1/4" 70,000 90340A121 5.43

High 1 1/2" Partially Threaded 1 1/8" Coarse 15/32" 15/32" 1/4" 70,000 90340A122 5.64

High 1 3/4" Partially Threaded 1 1/8" Coarse 15/32" 15/32" 1/4" 70,000 90340A123 6.04

High 2" Partially Threaded 1 1/8" Coarse 15/32" 15/32" 1/4" 70,000 90340A124 6.45

3/8"-16

High 3/4" Fully Threaded __ Coarse 5/8" 9/16" 3/8" 70,000 90340A125 6.40

High 1" Fully Threaded __ Coarse 5/8" 9/16" 3/8" 70,000 90340A126 6.99

High 1 1/4" Fully Threaded __ Coarse 5/8" 9/16" 3/8" 70,000 90340A127 7.38

High 1 1/2" Partially Threaded 1 1/4" Coarse 5/8" 9/16" 3/8" 70,000 90340A128 8.08

High 1 3/4" Partially Threaded 1 1/4" Coarse 5/8" 9/16" 3/8" 70,000 90340A129 8.51

High 2" Partially Threaded 1 1/4" Coarse 5/8" 9/16" 3/8" 70,000 90340A130 8.71

1/2"-13

High 1" Fully Threaded __ Coarse 3/4" 3/4" 3/8" 70,000 90340A131 12.26

High 1 1/4" Fully Threaded __ Coarse 3/4" 3/4" 3/8" 70,000 90340A132 13.81

High 1 1/2" Fully Threaded __ Coarse 3/4" 3/4" 3/8" 70,000 90340A133 14.68