Screws are alloy steel with a tensile strength of 170,000 psi, making them stronger than Grade 8 steel screws and more than twice as strong as stainless steel wire-lockable screws. Their black-oxide finish provides mild corrosion resistance in dry environments. For more vibration resistance than any other socket head screw, wire these screws together through the hole in the head (wire sold separately). Dimensions meet ASME B18.3 specifications. Length is measured from under the head.

Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.

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

Screws

Head

Stainless

Steel Wire

Lg. Threading Min.

Thread Lg. Thread

Spacing Dia. Ht. Hole

Dia. Drive

Size Tensile

Strength, psi Specifications

Met Pkg.

Qty. Pkg. Each

Black-Oxide Alloy Steel

2-56

3/16" Fully Threaded __ Coarse 9/64" 0.086" 0.031" 5/64" 170,000 ASME B18.3 5 90117A111 $10.61 8860K11 $13.55

1/4" Fully Threaded __ Coarse 9/64" 0.086" 0.031" 5/64" 170,000 ASME B18.3 5 90117A112 9.94 8860K11 13.55

3/8" Fully Threaded __ Coarse 9/64" 0.086" 0.031" 5/64" 170,000 ASME B18.3 5 90117A113 10.16 8860K11 13.55

1/2" Fully Threaded __ Coarse 9/64" 0.086" 0.031" 5/64" 170,000 ASME B18.3 5 90117A114 10.38 8860K11 13.55

4-40

3/16" Fully Threaded __ Coarse 0.183" 0.112" 0.035" 3/32" 170,000 ASME B18.3 10 90117A115 10.74 8860K12 12.61

1/4" Fully Threaded __ Coarse 0.183" 0.112" 0.035" 3/32" 170,000 ASME B18.3 10 90117A116 11.05 8860K12 12.61

3/8" Fully Threaded __ Coarse 0.183" 0.112" 0.035" 3/32" 170,000 ASME B18.3 10 90117A117 11.49 8860K12 12.61

1/2" Fully Threaded __ Coarse 0.183" 0.112" 0.035" 3/32" 170,000 ASME B18.3 10 90117A118 11.72 8860K12 12.61

6-32

1/4" Fully Threaded __ Coarse 0.226" 0.138" 0.035" 7/64" 170,000 ASME B18.3 10 90117A119 9.73 8860K12 12.61

3/8" Fully Threaded __ Coarse 0.226" 0.138" 0.035" 7/64" 170,000 ASME B18.3 10 90117A121 10.17 8860K12 12.61

1/2" Fully Threaded __ Coarse 0.226" 0.138" 0.035" 7/64" 170,000 ASME B18.3 10 90117A122 10.61 8860K12 12.61

3/4" Fully Threaded __ Coarse 0.226" 0.138" 0.035" 7/64" 170,000 ASME B18.3 10 90117A123 11.05 8860K12 12.61

8-32

3/8" Fully Threaded __ Coarse 0.27" 0.164" 0.047" 9/64" 170,000 ASME B18.3 10 90117A124 10.61 8860K13 12.15

1/2" Fully Threaded __ Coarse 0.27" 0.164" 0.047" 9/64" 170,000 ASME B18.3 10 90117A125 11.05 8860K13 12.15

3/4" Fully Threaded __ Coarse 0.27" 0.164" 0.047" 9/64" 170,000 ASME B18.3 10 90117A126 11.49 8860K13 12.15

10-24

3/8" Fully Threaded __ Coarse 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A183 9.19 8860K13 12.15

1/2" Fully Threaded __ Coarse 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A187 9.26 8860K13 12.15

3/4" Fully Threaded __ Coarse 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A188 10.17 8860K13 12.15

10-32

3/8" Fully Threaded __ Fine 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A191 9.07 8860K13 12.15

1/2" Fully Threaded __ Fine 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A193 9.23 8860K13 12.15

5/8" Fully Threaded __ Fine 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A194 10.10 8860K13 12.15

3/4" Fully Threaded __ Fine 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A195 10.57 8860K13 12.15

1" Fully Threaded __ Fine 5/16" 0.19" 0.047" 5/32" 170,000 ASME B18.3 10 90117A196 11.50 8860K13 12.15

1/4"-20

1/4" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A534 9.16 8860K13 12.15

3/8" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A535 7.91 8860K13 12.15

1/2" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A537 8.07 8860K13 12.15

5/8" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A539 8.17 8860K13 12.15

3/4" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A540 8.45 8860K13 12.15

1" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A542 8.63 8860K13 12.15

1 1/4" Fully Threaded __ Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A544 8.83 8860K13 12.15

1 1/2" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A546 9.07 8860K13 12.15

1 3/4" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A562 9.54 8860K13 12.15

2" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A550 9.55 8860K13 12.15

2 1/4" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A551 10.67 8860K13 12.15

2 1/2" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A565 11.04 8860K13 12.15

2 3/4" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A569 11.77 8860K13 12.15

3" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A572 12.35 8860K13 12.15

3 1/2" Partially Threaded 1" Coarse 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A575 13.18 8860K13 12.15

1/4"-28

3/4" Fully Threaded __ Fine 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A200 8.63 8860K13 12.15

1" Fully Threaded __ Fine 3/8" 1/4" 0.047" 3/16" 170,000 ASME B18.3 10 90117A205 9.02 8860K13 12.15

5/16"-18

3/4" Fully Threaded __ Coarse 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A581 9.55 8860K13 12.15

1" Fully Threaded __ Coarse 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A583 9.74 8860K13 12.15

1 1/4" Fully Threaded __ Coarse 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A585 10.00 8860K13 12.15

1 1/2" Fully Threaded __ Coarse 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A587 10.36 8860K13 12.15

5/16"-24

3/4" Fully Threaded __ Fine 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A230 9.84 8860K13 12.15

1" Fully Threaded __ Fine 15/32" 5/16" 0.047" 1/4" 170,000 ASME B18.3 10 90117A235 10.00 8860K13 12.15

3/8"-16

3/4" Fully Threaded __ Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A622 10.14 8860K14 9.19

1" Fully Threaded __ Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A624 10.37 8860K14 9.19

1 1/4" Fully Threaded __ Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A626 11.34 8860K14 9.19

1 1/2" Fully Threaded __ Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A628 11.55 8860K14 9.19

1 3/4" Partially Threaded 1 1/4" Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A630 11.96 8860K14 9.19

2 1/4" Partially Threaded 1 1/4" Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A633 13.06 8860K14 9.19

2 1/2" Partially Threaded 1 1/4" Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A634 13.52 8860K14 9.19

3 1/2" Partially Threaded 1 1/4" Coarse 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 5 90117A638 9.35 8860K14 9.19

3/8"-24

1" Fully Threaded __ Fine 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A250 11.21 8860K14 9.19

1 1/4" Fully Threaded __ Fine 9/16" 3/8" 0.064" 5/16" 170,000 ASME B18.3 10 90117A255 11.98 8860K14 9.19

5/8"-11

2" Fully Threaded __ Coarse 15/16" 5/8" 0.064" 1/2" 170,000 ASME B18.3 1 90117A802 3.44 8860K14 9.19

2 1/2" Partially Threaded 1 3/4" Coarse 15/16" 5/8" 0.064" 1/2" 170,000 ASME B18.3 1 90117A804 3.62 8860K14 9.19

1/2"-13

1" Fully Threaded __ Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A715 10.38 8860K14 9.19

1 1/4" Fully Threaded __ Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A717 10.90 8860K14 9.19

1 1/2" Fully Threaded __ Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A716 11.89 8860K14 9.19

1 3/4" Fully Threaded __ Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A718 12.21 8860K14 9.19

2" Fully Threaded __ Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A720 12.70 8860K14 9.19

2 1/2" Partially Threaded 1 1/2" Coarse 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A722 13.61 8860K14 9.19

1/2"-20

1 1/4" Fully Threaded __ Fine 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A270 12.18 8860K14 9.19

1 3/4" Fully Threaded __ Fine 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A275 13.00 8860K14 9.19

2" Fully Threaded __ Fine 3/4" 1/2" 0.064" 3/8" 170,000 ASME B18.3 5 90117A280 13.18 8860K14 9.19