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About Flat Head Screws
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Mil. Spec. Stainless Steel Phillips Flat Head Screws
Passivated
Standard 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 a 100° countersink angle distribute pressure over a wide area to prevent crushing soft materials.
Passivated stainless steel screws protect against oxidation and corrosion.
| Lg. | Threading | Flat Head Profile | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi  | Specifications Met | Pkg. Qty. | Pkg. | |
Passivated 18-8 Stainless Steel—100° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
4-40 | ||||||||||
| 5/8" | Fully Threaded | Standard | 0.225" | 0.049" | No. 1 | 70,000 | Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, MS24693-C7, NASM24693, SAE AMS2700 | 100 | 000000000 | 000000 |