Choose these screws for their adherence to strict military standards for material and construction. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. Screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.

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

Lg. Threading Min.

Thread Lg. Head

Dia. Head Ht. Drive

Size Tensile

Strength, psi Specifications Met Each

18-8 Stainless Steel

4-40

1/4" Fully Threaded __ 0.255" 0.083" 1/16" 70,000 Fed. Spec. QQ-P-35, MS24671-1 94518A105 $3.57

3/8" Fully Threaded __ 0.255" 0.083" 1/16" 70,000 Fed. Spec. QQ-P-35, MS24671-2 94518A108 4.38

1/2" Fully Threaded __ 0.255" 0.083" 1/16" 70,000 Fed. Spec. QQ-P-35, MS24671-3 94518A111 4.73

5/8" Fully Threaded __ 0.255" 0.083" 1/16" 70,000 Fed. Spec. QQ-P-35, MS24671-4 94518A112 4.80

3/4" Fully Threaded __ 0.255" 0.083" 1/16" 70,000 Fed. Spec. QQ-P-35, MS24671-5 94518A114 9.38

6-32

1/4" Fully Threaded __ 0.307" 0.097" 5/64" 70,000 Fed. Spec. QQ-P-35, MS24671-7 94518A209 2.81

3/8" Fully Threaded __ 0.307" 0.097" 5/64" 70,000 Fed. Spec. QQ-P-35, MS24671-8 94518A210 2.84

1/2" Fully Threaded __ 0.307" 0.097" 5/64" 70,000 Fed. Spec. QQ-P-35, MS24671-9 94518A213 3.06

5/8" Fully Threaded __ 0.307" 0.097" 5/64" 70,000 Fed. Spec. QQ-P-35, MS24671-10 94518A216 4.25

3/4" Fully Threaded __ 0.307" 0.097" 5/64" 70,000 Fed. Spec. QQ-P-35, MS24671-11 94518A220 4.58

8-32

3/8" Fully Threaded __ 0.359" 0.112" 3/32" 70,000 Fed. Spec. QQ-P-35, MS24671-13 94518A310 3.35

1/2" Fully Threaded __ 0.359" 0.112" 3/32" 70,000 Fed. Spec. QQ-P-35, MS24671-14 94518A313 3.48

3/4" Fully Threaded __ 0.359" 0.112" 3/32" 70,000 Fed. Spec. QQ-P-35, MS24671-16 94518A316 3.75

1" Partially Threaded 3/4" 0.359" 0.112" 3/32" 70,000 Fed. Spec. QQ-P-35, MS24671-17 94518A320 4.56

10-24

3/8" Fully Threaded __ 0.411" 0.127" 1/8" 70,000 Fed. Spec. QQ-P-35, MS24671-19 94518A413 5.70

1/2" Fully Threaded __ 0.411" 0.127" 1/8" 70,000 Fed. Spec. QQ-P-35, MS24671-20 94518A415 4.66

5/8" Fully Threaded __ 0.411" 0.127" 1/8" 70,000 Fed. Spec. QQ-P-35, MS24671-21 94518A416 4.63

3/4" Fully Threaded __ 0.411" 0.127" 1/8" 70,000 Fed. Spec. QQ-P-35, MS24671-22 94518A418 4.70

1" Fully Threaded __ 0.411" 0.127" 1/8" 70,000 Fed. Spec. QQ-P-35, MS24671-23 94518A421 6.24

1/4"-20

1/2" Fully Threaded __ 0.531" 0.161" 5/32" 70,000 Fed. Spec. QQ-P-35, MS24671-28 94518A510 4.40

5/8" Fully Threaded __ 0.531" 0.161" 5/32" 70,000 Fed. Spec. QQ-P-35, MS24671-29 94518A519 7.60

3/4" Fully Threaded __ 0.531" 0.161" 5/32" 70,000 Fed. Spec. QQ-P-35, MS24671-30 94518A515 4.75

1" Fully Threaded __ 0.531" 0.161" 5/32" 70,000 Fed. Spec. QQ-P-35, MS24671-31 94518A520 5.03

1 1/2" Partially Threaded 1" 0.531" 0.161" 5/32" 70,000 Fed. Spec. QQ-P-35, MS24671-33 94518A525 6.33

5/16"-18

3/4" Fully Threaded __ 0.656" 0.198" 3/16" 70,000 Fed. Spec. QQ-P-35, MS24671-40 94518A615 11.67

1" Fully Threaded __ 0.656" 0.198" 3/16" 70,000 Fed. Spec. QQ-P-35, MS24671-41 94518A620 16.83

1 1/2" Partially Threaded 1 1/4" 0.656" 0.198" 3/16" 70,000 Fed. Spec. QQ-P-35, MS24671-43 94518A625 17.83

3/8"-16

3/4" Fully Threaded __ 0.781" 0.234" 7/32" 70,000 Fed. Spec. QQ-P-35, MS24671-51 94518A649 11.25

1" Fully Threaded __ 0.781" 0.234" 7/32" 70,000 Fed. Spec. QQ-P-35, MS24671-52 94518A650 11.23