Suzhou Runtai Precision Hardware Co,.Ltd.
We are professional manufacture factory of screws, bolts, rivets, nuts,bushing and non-standard fastener from China.
We are professional manufacture factory of screws, bolts, rivets, nuts,bushing and non-standard fastener from China.
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| Products Name: | Alloy Steel Hex Drive Flat Head Screws | Part Number: | RT- Bushing 002 |
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| Standard: | DIN,ANSI,JIS,ASTM,GB | Material For Choose: | Carbon Steel, Stainless Steel,Brass, Aluminum Alloy |
| Surface Treatment: | Plain, Zinc, Zinc Nickel Plated | Packaging: | Poly Bag+Cartoon Box+ Wooden Pallet |
| High Light: | countersunk flat head bolt,flat head machine screws |
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Alloy Steel Hex Drive Flat Head Screws Grade 8.8 Countersunk Head Machine Screws DIN7991 Flat Head Screws
Products Description
Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're 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.
Black-oxide alloy steel screws have mild corrosion resistance in dry environments.
Zinc-plated alloy steel screws resist corrosion in wet environments.
Products Specification
| Thread Size | 4-48 |
| Length | 1/4" |
| Threading | Fully Threaded |
| Flat Head Profile | Standard |
| Head Diameter | 0.255" |
| Head Height | 0.083" |
| Countersink Angle | 82° |
| Drive Style | Hex |
| Drive Size | 1/16" |
| Material | Black-Oxide Alloy Steel |
| Hardness | Rockwell C32 |
| Tensile Strength | 120,000 psi |
| Screw Size Decimal Equivalent | 0.112" |
| Thread Type | UNF |
| Thread Spacing | Fine |
| Thread Fit | Class 3A |
| Thread Direction | Right Hand |
| Head Type | Flat |
| System of Measurement | Inch |
| Specifications Met | ASTM F835 |
| RoHS | Compliant |
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