Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin | Precision Engineered by HW Fasteners | ISO Certified
Buy Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin from HW Fasteners β a leading ISO 9001-certified Taiwan manufacturer. Our M8 x 20 Collar Screws / Polished Chrome Carriage bolts deliver exceptional strength, corrosion resistance, and custom production options for industrial needs.
Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin
Washer-head screws or called collar screws are designed similarly to screws with attached washers, providing anti-loosening and tightening functions without the washer detaching. Stainless Steel screws without threads are polished for a smooth finish and special surface treatments. Large round-head screws, such as those used in car bumpers, can also be customized. Additional services include groove cutting, head forming, single-slot machining, grinding, precise roundness control, drilling, secondary processing, and special surface treatments.
Features
HW Fasteners specialized in standard and custom-made screws from 1.4 - M16 from Small to Medium Quantity. Specialized coatings, Small production runs, Short lead times.
Specification
β Sizes: M1.4, M2, M3, M4, M5, M6, M8, M10, M12 up to M16 or other imperial size
β Pitch: UNC / UNF or other are available.
β Length: 8mm / 10mm / 12mm / 14mm / 16mm / 18mm / 20mm / 25mm / 30mm / 35mm / 40mm
β Head Style: Pan Head. Flat head, round head, external hex, flange hex, cap head hex, countersunk, half-round, flat-head are also available.
β Materials:
Carbon Steel C1006 / C1008 / C1020 / C1022 / C1035 / C1045.
Stainless Steel (304, 316, 302, 303, 416).
Aluminum 6061, 7075.
Alloy Steel: SCM435, Gr 8.8, Gr10.9, Gr12.9, SUJ2.
Titanium,
Copper C1100 / C1011 / C1020 are available.
β Plating: Passivated.
Zinc, nickel, black nickel, zinc-nickel, rainbow, chrome, copper, trivalent chromium black zinc, black phosphate, colored coatings or more are available.
β Patch: Nylok / Loctite / Procete / Nyseal.
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Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin β Built for High-Strength, High-Precision Applications
Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin is designed and manufactured by HW Fasteners, an ISO 9001:2015 certified Taiwan-based company with nearly 50 years of experience in screw and fastener production. Every unit is made using premium materials like stainless steel, carbon steel, or titanium to meet global industrial standards.
We support full customization, including head design, thread type, and surface treatment. Options include cold forging, CNC machining, and specialized anti-corrosion coatings, ensuring your M8 x 20 Collar Screws / Polished Chrome Carriage bolts performs reliably in demanding environments.
Our manufacturing flexibility allows for low minimum order quantities, quick turnaround times, and consistent quality. Trust HW Fasteners for precision-engineered Collar Screws Hexagon Head Screws / Custom Carriage Bolts and Pin tailored to your exact requirements.