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About Flat Head Screws
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Mil. Spec. Stainless Steel Phillips Flat Head Screws
Passivated
Undercut Profile
Choose these screws for their adherence to strict military standards for material and construction. They have good chemical resistance and may be mildly magnetic. Screws are angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Screws with an undercut profile have a shallow head for use in thin materials. Passivated stainless steel screws protect against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Flat Head Profile | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi  | Specifications Met | Pkg. Qty. | Pkg. | |
Passivated 18-8 Stainless Steel—82° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
4-40 | ||||||||||
| 3/16" | Fully Threaded | Undercut | 0.225" | 0.047" | No. 1 | 70,000 | Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, MS51959-12, SAE AMS2700 | 50 | 000000000 | 00000 |