M6 Galvanized Steel B7M METAL BOLT Hexagon Head Flange Bolt DIN6921
| Name | Metal Bolt |
| Standard | DIN, ASME, ANSI, ISO |
| Material | Steel |
| Place of Origin | China |
| Finish | Polish, Passivation, Black, Galvanization, Chromate, Dacromet |
| Certificate | ISO9001:2008, ROHS |
| Used | Building Industry Machinery |
| Thread Type | Coarse, Fine |
| Usage | Fastening |
| Function | Connection, Fastening and Decoration |
| Strength | High |
| Size | Various sizes available |
| Measurement System | INCH, Metric system |
This bolt adopts an integrated molding process, combining three major modules: a hexagonal torque-bearing head, an expanded flange, and a functional shank. The outer diameter of the flange is approximately 30% to 50% larger than that of traditional models. According to patent documentation disclosed in 2024, its innovative structure features annular grooves in the square-step transition area, equipped with silicone-based elastic sealing skirt components. Adjacent skirts form a 0.3 mm wide oil-guiding channel, and a self-sealing oil injection port is integrated at the top. The shank section utilizes a variable-diameter stepped configuration, comprising a non-threaded smooth segment (accounting for 35%-45% of the total shank length) and a fully threaded segment. The connection between the two segments incorporates a 15° conical smooth transition zone for stress optimization, significantly enhancing shear load resistance.
- Copper material: Zinc copper alloy nuts, etc.
- Stainless steel: Copper nut, inlaid copper nut, knurled copper nut, embedded copper nut, injection copper nut
- Round nut, ring nut, butterfly nut
- DISC-LOCK lock nut: Two-part design with staggered CAMs for vibration resistance
- Self-locking nut, locking nut, four-claw nut, driving nut safety nut
- Thin rod screw connection nut, self-locking hexagonal cap nut
- Special anchor screw nut, hexagonal crown thin nut, suspension ring nut
- Welded square nut, welded hexagon nut, fastening nut, inserted round nut
- Fine teeth all metal hexagonal flange face lock nut
- Round nut with slot, round nut with hole on side/end, small round nut
| Aluminum | Excellent thermal/electrical conductivity but naturally soft. May produce gelatinous buildup during processing. |
| Titanium | EDM machining recommended. Requires deionized water to control heat during processing. |
| Steel | Very strong metal. Wire cutting machines often preferred for complex features. Requires heat management. |
| Brass | High tensile strength, easy to machine but requires slow cutting speed due to softness. |
- Reusable medium carbon steel construction
- Easy installation and disassembly
- Time-Saving: Eliminates the need for additional washers, streamlining assembly
- Improved Joint Integrity: Maintains consistent preload, reducing joint failure risks.
- Durable wholeness
A: We are factory and OEM are available.
A: Generally 7-10 days if in stock, or 15-20 days if not in stock (depending on quantity).
A: Yes, we offer free samples but customer pays freight cost.
A: 30% T/T in advance, balance before shipment or L/C.
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