12-50mm Stainless Steel Round Head Bolt Polished Finish Corrosion-Resistant Furniture Fitting for Furniture

Description

What is a Round Head Bolt?

A round head bolt is a fastener characterized by a dome-shaped, low-profile head with a flat bearing surface underneath . Unlike carriage bolts, which feature a square or ribbed neck for anti-rotation, standard round head bolts typically lack an integral locking feature and are driven via a slot, hex socket, or external hex . They are used where a smooth, finished appearance is desired and access is limited to one side.

Material

• Carbon Steel: Grades 4.6, 4.8, 8.8; common for general industrial use .

• Stainless Steel: A2 (304) for corrosion resistance; A4 (316) for marine environments; hardened 420/440C for locating bolts .

• Alloy Steel: 1045/EN 1.1191 carbon steel; 45HRC tip hardness for wear-resistant applications .

Surface Finishes

• Zinc Plated (CR+3/CR+6): Standard clear or yellow chromate; 72h+ salt spray corrosion protection .

• Black Oxide: Mild corrosion resistance; matte black cosmetic finish .

• Electroless Nickel Plating: Superior corrosion and wear resistance; uniform thickness .

• Plain (No Finish): Standard for stainless steel grades .

Specifications

• Diameter: Metric M4 to M16 ; Inch #10 to 3/4″ .

• Length: 6mm to 300mm; fully threaded under 6″ lengths .

• Head Dimensions (M10): Head diameter 23.35-24.65mm; head height 4.62-5.38mm .

• Drive Types: Slotted, hex socket (Allen), external hex .

• Thread: Coarse (standard) and fine pitch options; right-hand .

• Standards: ASME B18.5 (inch), DIN 603, ISO 8677 .

Primary Applications

• Machinery Assembly: Securing components in industrial equipment .

• Stove Bolts: Light-duty fastening in appliances and sheet metal assemblies .

• Locating Bolts (Round Head): Precision positioning and workpiece alignment in jigs and fixtures; hardened tip resists wear .

• Furniture & Fixtures: Decorative exposed-head applications requiring smooth finish.

• General MRO: Equipment maintenance, automotive repairs, panel building .

Best Practice Application Example

An MRO technician repairs a sheet metal enclosure on a packaging line. A #10-24 x 3/4″ round head slotted stove bolt, steel with zinc CR+3 finish is selected . The round head sits flush against the exterior surface, providing a clean appearance. The bolt is inserted through pre-drilled holes, secured with a matching nut from the interior side. Zinc plating offers 72h+ corrosion resistance in the factory environment. The slotted drive allows quick installation with standard tools without requiring specialized bits.