18GA 5.7mm Narrow Crown
90 Staples
Narrow crown leaves invisible fastening marks.
18GA rigid wire ensures stable fixation.
Full leg length fits diverse fine finishing tasks.
Sinsun 90 Series Staples | 18GA 5.7mm Narrow Crown Staples with 10-50mm Full Leg Length for Fine Woodworking & Furniture Finishing
Premium Sinsun 90 Series Staples feature 18GA wire, precise 5.7mm narrow crown, 1.25mm wire width and 1.05mm wire thickness. Covering 10mm to 50mm leg length range, these industrial medium-wire staples suit furniture assembly, trim finishing and interior carpentry. Factory bulk supply and custom finishes for global B2B buyers.
Get a Quick Qoute90 Series Staples | 18GA 5.7mm Narrow Crown Staples 10-50mm Leg - Sinsun
Explore Sinsun 90 Series narrow crown staples, engineered to 18GA specifications with 5.7mm crown width. Precision manufacturing for furniture assembly and flooring.
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What is a 90 Series staple? This is an 18 gauge narrow crown fastener with a standard crown width of 5.7mm (approx. ¼ inch) - the most used format across pneumatic staplers in Europe, Asia and the Middle East. The 90 Series staple is flush to wood surfaces, unlike wider crown fasteners that leave telltale marks. It forms an almost invisible bond that keeps your finish work intact. This is the staple you turn to when you require both strength and aesthetics in equal measure.
Why does Sisnun make a better 90 Series staple? Every batch of our high carbon steel wire is electro-galvanized to ensure uniform tensile properties. The cold-heading process we employ guarantees the perfect parallelism of each staple leg, an important aspect often neglected by lower-tier suppliers. Legs are spread out even a little bit not to get jammed in the magazine or blow through the surface of material. We have tighter tolerances than the market standard. This leads to less production stoppages for your operators.
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High-Demand Sinsun 90 Series Staples Classifications by Finish & Application Grade
Browse trending Sinsun 90 Series Staples categories including electro-galvanized, stainless steel, high-tensile and resin-coated variants for diverse fine finishing scenarios.
90 Series Galvanized Narrow Crown Staples
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90 Series Stainless Steel Staples
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90 Series Resin-Coated Staples
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90 Series Copper-Coated Staples
Send inquiry Now| Model Code | Wire Gauge | Crown Width | Wire Width | Wire Thickness | Leg Length | Staples per Box | Core Application Scenarios |
| 9010 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 10mm | 5000PCS | Thin fabric fixation, ultra-thin wood trim, decorative sticker fixing |
| 9015 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 15mm | 5000PCS | Indoor molding trimming, small cabinet part assembly |
| 9020 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 20mm | 5000PCS | General furniture frame fixing, floor underlayment installation |
| 9025 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 25mm | 5000PCS | Door & window trim, lattice work, medium wood panel fixation |
| 9030 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 30mm | 5000PCS | Cabinet backboard assembly, thick upholstery material fixing |
| 9040 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 40mm | 5000PCS | Hardwood furniture assembly, thick composite board fastening |
| 9050 | 18GA | 5.7mm ± 0.1mm | 1.25mm | 1.05mm | 50mm | 5000PCS | Thick timber splicing, heavy interior structural trimming |
| Technical Parameter Item | Standard Specification |
| Industrial Standard Wire Gauge | 18GA Medium Wire Uniform Standard |
| Precision Narrow Crown Width | 5.7mm 卤0.1mm Ultra-Tight Tolerance |
| Fixed Wire Width | 1.25mm Consistent Full Batch Size |
| Fixed Wire Thickness | 1.05mm Industrial Standard Thickness |
| Complete Leg Length Range | 10mm / 15mm / 20mm / 25mm / 30mm / 40mm / 50mm |
| Manufacturing Raw Materials | High-purity Q195 low-carbon steel / 304 stainless steel |
| Available Surface Finishes | Electro-galvanized, hot-dip galvanized, resin-coated, polished |
| Industrial Hardness Grade | HRC 35-40 Balanced Hardness for Anti-Bend & No Crack |
| Compatible Equipment | All standard 90-series pneumatic & electric staple guns |
| Core Structural Advantages | Chisel sharp tip, narrow invisible crown, rigid anti-deformation wire body |
Sinsun 90 Series Staples Professional Industrial & Finishing Applications
Explore targeted application scenarios of Sinsun 90 Series Staples in fine woodworking, furniture finishing, interior trim and decorative material fixation.
Cabinet Back Panel Attachment
Cabinet back panels should be securely attached so that no staple lines are visible on the outer surfaces. Our 90/16 staples shoot through 3mm plywood backing into hardwood frames and hold tight through years of opening and closing a cabinet. With a slim 5.7mm crown, the entry points are small sufficient to be filled during finishing, keeping your cabinet’s clean aesthetic. Furniture manufacturers usually set their pneumatic staplers at 80 PSI for this application, embedding the crown flush with the panel's surface.
Acoustic Panel Installation in Commercial Spaces
Acoustic panels for recording studios, conference rooms that need to stay put with no visible fasteners. Contractors staple fabric-wrapped panels to wooden battens with Sinsun 90/13 galvanised staples. The legs of these staples are long enough to get a grip but not long enough to penetrate the front surface of the panel. The narrow crown design will not tear the fabric around the fastener like wider crown staples. The application has observed a substantial increase in upcoming office block projects in Southeast Asia and the Middle East.
Corrugated Box Sealing on Automated Packaging Lines
E-commerce fulfillment centers process thousands of boxes each day, and each one must be sealed uniformly. Our 90/10 resin coated staples penetrate double wall corrugated board without splitting the flute structure, maintaining flap closure during transport vibration. When driven , the heat from the friction activates the thermal bond of the resin coating for more grip than standard galvanised staples.
Subfloor Plywood Installation
Flooring contractors use 90/25 galvanised staples to fasten plywood under the underlayment. They are driven into the joists at 15-20 degree angles. This way of angling increases pull-out resistance by engaging more wood fibres along the leg length. The stapler of the 90 Series features chisel-ground leg points that can be driven into plywood without pre-drilling, saving installers a lot of labour time over screw fastening. With a pneumatic stapler, one professional installer can cover approximately 300 square feet an hour versus 150 square feet with screws – a 100% productivity gain.
Trusted by Furniture Makers Worldwide — 90 Series Staple Reviews
Read authentic testimonials from industrial buyers in Colombia, Romania, and Nigeria. Discover why professionals rely on Sinsun for consistent 18GA narrow crown staples.
Tatiana K. — Nur-Sultan, Kazakhstan
Usually the legs crack when you staple the subfloor at -15°C. Your resin-coated 90/25 staples drive cleanly in cold conditions. “We’re going forward with Sun Sun for our winter projects.”
Abdulrahman A. — Doha, Qatar
Our automatic carton staplers jammed every 2,000 cycles with cheap staples. The Sinsun 90/10 jammed for the first time after 12,000 cycles. That is true production uptime improvement.”
Naledi K. — Gaborone, Botswana
“I liked the consistency of the wire gauge between boxes. No holes, no holes. “We set our pneumatic tools to the same depth for every batch we get.
Hot Google FAQ for Sinsun 90 Series staple
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Q1: What is the gauge and crown width of a 90 series staple?
A: The 90 Series staple is the industry standard, with a crown width of 5.7mm and is made from 18-gauge wire (1.25mm x 1.05mm). This is a standard that all Sinsun 90 Series staples meet. -
Q2: Will Sinsun 90 Series staples work with my Bostitch or Senco pneumatic stapler?
A: Yes. Our 90 Series staples are compatible with all major brands that accept the 90 format including Bostitch, Senco, Max, Tacwise, Makita, Draper and Silverline. -
Q3: Why do my staples get stuck in the tool?
A: The leg parallelism is inconsistent or there is excess glue residue on the strips. Sinsun has tight manufacturing tolerances and uses temperature-controlled adhesives to minimise both problems. -
Q4: Do you have stainless steel 90 Series staples for outdoor use?
A: Yes. We produce 304 stainless steel 90 Series staples for marine environments, coastal construction and outdoor furniture assembly. Minimum order quantity for steel variants. -
Q5: How long does it take to order containers?
A: For regular galvanised 90 Series staples (10-38mm) in normal sizes, the lead time is 20-25 days after order confirmation. *10 box sample orders ship within 3 business days by DHL. -
Q6: Is there an option to change the leg length?
A: Yes. We have custom leg length options for OEM customers with annual volumes over 500,000 pieces ranging from 8mm to 50 mm. Custom tooling is subject to minimum order quantities./div> -
Q7: What is the difference between resin coated and standard galvanised finishes?
A: Staples with a resin coating have a thin layer of polymer that melts as it is driven in, forming a thermal bond with the wood fibres. This will give you 30% more pull-out resistance. For indoor work, use standard galvanized steel; for floors or structural work, use resin-coated steel. -
Q8: Do you have free samples before I place an order in bulk?
A: Yes. Sinsun offers free pre-production samples of 90 Series staples (approx. 200-300 pieces per requested size). You only pay for international courier shipping.
Staples
Wire tensile pull test — we reject any coil below 90 kg/mm²
Crown width measurement — 25.4mm ±0.2mm verified with optical comparator
Leg parallelism inspection — crooked staples never reach the box
Collation adhesive integrity check — strip separation force measured
Galvanized coating thickness — X‑ray fluorescence scanning (5‑8 microns per side)
Salt spray chamber test — 96 hours NSS per ASTM B117 (standard finish)
Drive test through 12mm plywood — sampled from every 5,000 staples
staples
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