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At Ganggu Hardware, we specialize in manufacturing high-precision industrial fasteners and custom mechanical components engineered for demanding global applications. Our comprehensive catalog features custom screws, precision pins, nuts, rivets, springs, washers, structural brackets, and CNC machined parts designed to meet rigorous performance standards. Utilizing advanced multi-station cold heading, precision thread rolling, and Swiss CNC machining technology, we maintain strict quality control to deliver exceptional durability, high tensile strength, and tight dimensional tolerances. Certified to ISO 9001 quality standards, we provide tailored OEM/ODM manufacturing, versatile surface treatments, and flexible material options to support critical projects across automotive, electronics, aerospace, and industrial machinery sectors.
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These DIN 985 lock nuts are hex nuts with a blue nylon ring set into the top face, so the bolt thread cuts its own path through the insert and stays gripped. That interference fit separates them from a plain nut: the nylon recovers elastically and keeps a prevailing torque on the thread even after the joint settles. As nylon insert lock nuts, they need no adhesive and no second nut, so assembly handles one part. The zinc plated nyloc nuts here cover M8 to M16 in a blue-white finish for indoor and covered outdoor work. Because the insert is nylon, temperature and chemicals set the limit rather than the steel. Coating, insert colour, marking and packing can be customized.
These DIN 6923 flange nuts are carbon steel hex nuts with an integrated flange, and the flange face carries a ring of angled serrations instead of a plain washer face. The serration does the work: as the nut tightens, the teeth bite the mating surface and resist backing out, which is why the same part is sold as hex flange lock nuts. The flange spreads clamp load over a wider area, so a separate washer is often unnecessary and assembly needs one part less. The published table runs from M3 to M24, with serrated flange nuts in M6 to M20 held for spot supply in grade 4.8 / 5.8, in blue-white or yellow zinc. Thickness, flange diameter, coating, marking and packaging can be customized.
These zinc plated square nuts are carbon steel fasteners with a square body, four chamfered corners and a chamfered top edge, finished in a blue-white zinc coating. The square form does the work: pulled into a timber pocket or held flat against a plate, the nut cannot spin, so one wrench on the bolt is enough. That is why square nuts for timber frame construction are paired with coach bolts, washers and connector plates in decks, fences and frame joints. As GB standard square nuts, the geometry follows the GB designation named in the product title, while the standard number and property class are confirmed on the drawing. Coating, chamfer, thread and packaging can be customized.
These stainless steel acorn nuts combine a hex body with a closed dome, so a stud end is covered rather than left exposed. The hex dome cap nuts shown here are polished to a mirror finish in 304 and 316 stainless steel, in sizes from M3 to M20, with coarse and fine pitches listed per size. Because the dome closes the end, the thread is shielded from dust and the joint gets a rounded, snag-free appearance. Buyers who specify 304 stainless steel cap nuts usually cover indoor and general outdoor work, while 316 is chosen near salt water and chlorides. Height, across-flats, pitch, finish, marking and packaging can be customized.
These stainless steel threaded inserts are machined from 303 stainless steel with a double twill knurl crossing in two directions, so the SL type knurled insert nut resists rotation under torque rather than gripping on one helix alone. Threads run from M2 to M20, and the size chart details M2 to M8 with inside diameter, pitch, outside diameter and slot width. Because the body is stainless steel rather than brass, these insert nuts for plastic molding suit housings that must stay clean and resist rust in humid indoor service. Ultrasonic, heat, press-in, expansion press-in and self-tapping installation are all supported, each aiming at a flush finish. Length, knurl, finish and packaging can be customized.
These heat insert nuts are machined from BG brass, a golden brown material that resists rust and keeps its lustre. Straight, cross and diamond knurling can be produced for different grip, and the CNC-turned thread covers M2 to M20, with M2 to M8 detailed in the size chart. As brass knurled inserts, they hold a reusable metal thread in thermoplastic: the knurl bites into the softened wall, so a screw can be driven and reopened without stripping the plastic. That makes them threaded inserts for 3D printing, molded housings and electronic enclosures. Plain, tin-plated and nickel-plated finishes are available, lengths and knurl patterns can be adjusted, and packaging, labels and box contents can be customized.
820 pieces in one case: this M2 socket head cap screw kit covers seven lengths from M2 × 4 mm to M2 × 20 mm, 60 screws each, plus 200 M2 nuts and 200 M2 flat washers. The black zinc plated M2 screws are carbon steel with a clean black appearance and basic surface protection, and the hex socket drive allows controlled tightening in tight spaces. Makers and repair shops often reuse the same M2 hardware across printers, housings and small mechanisms, so the kit also serves as stock of M2 screws for 3D printing, electronics builds and RC models. A hex key is included, not counted in the 820 pieces. Case 125 × 64 × 20 mm, 195 g, 96 boxes per carton. Ready stock available; box, label, logo and contents customizable.
458 pieces, ten sizes, one case: this cotter pin assortment kit combines split cotter pins and R clips in 304 stainless steel with a natural silver finish. Four split cotter pin sizes run from 1 × 16 mm to 3 × 30 mm (270 pcs); six R clip sizes run from 1 × 18 mm to 2.5 × 45 mm (188 pcs). The 304 stainless steel cotter pins resist corrosion, keep a smooth surface and stay strong yet flexible when the legs are spread. The R clip assortment handles quick pin and shaft retention. Case 172 × 95 × 22 mm, 315 g, 24 boxes per 28 × 25 × 25 cm carton. Ready stock available; box, label, logo and in-box contents customizable.
Stainless Steel CNC Machining for custom CNC stainless steel parts in 303, 304, 316L and 17-4PH. Milling, turning and multi-axis work run in one shop, holding ±0.01 mm and Ra 0.8, with passivation, electropolishing and bead blasting for corrosion-critical surfaces. We machine manifolds, flanges, housings, impellers, brackets and instrument bodies for food, medical and marine equipment, from 1 to 5,000 pcs, with material certificates and CMM reports. 316L Stainless Steel Machining is quoted with grade-specific tooling notes, so the price reflects what the alloy actually costs to cut.
5 axis CNC machining service for custom CNC machine spare parts and aluminum CNC milling parts. Simultaneous five-axis milling cuts undercuts, compound angles and contoured pockets in one setup, holding ±0.01 mm position and Ra 0.8 on functional faces. We reproduce obsolete or undocumented parts from a sample and produce replacement flanges, spools, valve blocks, threaded rings and impellers in 6061-T6, 7075-T6 and 304 stainless, 1 to 5,000 pcs, with CMM reports and material certificates. Send a STEP file or a photo with dimensions for a quotation within one week.
Aluminum CNC machining service for machine frame parts and automation equipment components, milled and turned to ±0.005 mm with Ra 0.4 surfaces. We produce CNC machined aluminum parts including mounting brackets, fixture plates, flange rings, timing pulleys, threaded adapters, tapered bushings and dome covers in 6061-T6 and 7075-T6, with hard anodizing, bead blasting or chromate conversion finishing. Custom CNC machining parts from 1 to 10,000 pcs, CMM-verified with first article reports and material certificates. Send your STEP file for a DFM review and a quotation within one week.
Custom precision CNC lathe machining for metal turned parts, produced from bar stock in a single clamping: OD and ID turning, facing, threading, grooving, knurling and cross-drilling. We machine stepped shafts, knurled grip shafts, threaded studs, flanged bushings, spacers, splined collars and brass turned parts in stainless steel, brass and aluminium, holding ±0.01 mm as standard on precision turned parts. Multi-variety, small-to-medium batches from 1 to 100,000 pcs, with first-article inspection, material certificates and 100% critical-dimension check before shipment. Send your drawing or 3D file for a same-week quotation.
Contact: Angel
Contact number: +86 18602085825
Email: angel@ganggus.com
WhatsApp: +86 18602085825
Address: Room 101, Building 2, No.11 jintang Road,changping Town, Dongguan City, Guangdong Province, CN
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