Product Categories
All product lines we source from Yongnian and the broader Chinese fastener cluster. Click any category for full specifications and FAQ; click any sub-category for detailed product information.
Bolts
Bolts are the core product of the Yongnian fastener cluster. From commodity DIN 933 hex bolts to high-strength ASTM A325 structural bolts, dozens of specialized factories produce the full international range. HDBolt sources from the factory most appropriate to each grade, size, and application.
Nuts
Nuts in Yongnian are produced by specialist factories running dedicated cold-forging and tapping lines. HDBolt sources matching nuts for every bolt category, plus the full range of specialty nuts — locking, structural, decorative, and embedded.
Threaded Rods
Yongnian is a major production center for threaded rods and stud bolts. Dedicated thread-rolling lines produce both commodity DIN 975 all-thread rods and high-specification ASTM A193 B7 / A320 L7 stud bolts for flange and pipe service.
Anchors
Mechanical anchors and wall plugs are produced by a set of specialist factories within the Yongnian cluster. HDBolt sources both heavy-duty concrete anchors (wedge, drop-in, sleeve) and lighter-duty drywall and frame anchors, plus full ranges of nylon plugs in retail and bulk packaging.
Screws
Screw production in China spans every category from high-volume drywall and chipboard screws to specialized self-drilling roofing screws and precision machine screws. HDBolt sources from factories matched to each screw type — point geometry, thread design, and surface finish all dramatically affect real-world performance.
- Drywall Screw
- Self-Tapping Screw
- Self-Drilling (Tek) Screw
- Wood Screw
- Chipboard Screw / Particle Board Screw
- Deck Screw
- Roofing Screw
- Machine Screw
- Set Screw
- Socket Cap Screw / Allen Bolt
- Button Head Socket Cap Screw
- Countersunk Socket Cap Screw
- Thumb Screw
- Sheet Metal Screw
- Concrete Screw (Concrete Anchor Screw)
Washers
Washers are commodity fasteners but consistent thickness and dimensional tolerance matter — especially in structural and high-torque applications. HDBolt sources from factories running automated stamping with regular tolerance checks.
Stainless Steel
Stainless steel fasteners are produced by a different group of factories than carbon steel — the cold-forging lines, tooling, and metallurgical controls are specialized. HDBolt sources from factories that genuinely work with austenitic stainless material, with PMI (Positive Material Identification) testing available on critical orders.
Brass & Copper
Brass and copper fasteners are a niche but important category — electrical conductivity, non-magnetic behavior, anti-spark in explosive atmospheres, plumbing service, and decorative or marine applications all favor copper-alloy fasteners over steel.