5/16-24 Button Head Cap Screw & 5/16 Button Head Cap | Buy
5/16-24 Button Head Cap Screw & 5/16 Button Head Cap โ Factory-Direct Precision Fasteners
Eliminate costly downtime & inconsistent quality with ISO 9001-certified 5/16-24 button head cap screws. Engineered for automotive, agricultural machinery, and construction โ 30% lower TCO vs. premium imports.
โ๏ธ 30,000+ sqm production facility ยท 10+ production lines
โ ๏ธ The true cost of cheap 5/16 button head cap screws
Corporate buyers & technical directors โ these are the hidden risks you face with substandard fasteners.
๐ง Structural failure under load
A major European agricultural OEM reported 23% fastener failure rate during torque testing with non-certified 5/16-24 button head cap screws. Result: โฌ2.7M in warranty claims.
๐ Thread galling & assembly downtime
Inconsistent thread tolerances on imported 5/16 button head cap screws cause jamming, stripping, and 12-18% scrap rate on assembly lines. Operations managers report 3.5 extra hours of rework per shift.
๐ Hidden supply chain risk
Low-cost suppliers from non-certified sources often delay shipments by 14-21 days and lack batch traceability. 66% of purchasing managers cite inconsistent lead times as their #1 frustration.
๐งช Compliance & certification gaps
Many unbranded 5/16-24 button head cap screws lack ISO 898-1 mechanical property verification. 37% of sampled products from non-audited factories failed hardness or tensile strength tests โ a direct liability for export to EU/US markets.
โ 5/16-24 Button Head Cap Screw โ Engineered for Reliability
Precision cold-forged, heat-treated, and 100% dimensionally inspected. Handan Boen delivers fasteners that meet or exceed ASTM A574 / ISO 898-1 standards.
Factory-Direct Pricing
Eliminate intermediaries. Our 5/16-24 button head cap screw is priced 18-25% below distributor networks while maintaining Grade 12.9 strength. MOQ from 500 pcs, with volume discounts at 10k+.
Material & Heat Treat Integrity
Alloy steel 10.9 / 12.9 with controlled carburization and tempering to 38-42 HRC. Every batch is tested for tensile strength (min. 1,200 MPa) and yield strength (min. 1,080 MPa) โ reports included.
Precision Thread Geometry
Our 5/16 button head cap screw features UNF 24 TPI thread with Class 2A fit. Thread pitch deviation is held to ยฑ0.02mm โ virtually eliminating galling and stripping during high-speed assembly.
Global Compliance Ready
All 5/16-24 button head cap screws carry CE marking, RoHS compliance, and ISO 9001:2015 certification. We also provide FCC, CB, and VDE documentation for regulated industries.
High-Speed Delivery
Stocked in 15,000+ SKUs with 7-15 day lead time for standard orders. Express shipping via DHL / FedEx / UPS available. We serve USA, UK, Germany, France, Australia, and more.
OEM/ODM Customization
Need a specific head marking, coating (Zn/Ni/PTFE/Dacromet), or drive type? We support full customization on 5/16 button head cap screw designs with free DFM feedback within 48 hours.
๐ Technical Specifications โ 5/16-24 Button Head Cap Screw
| Parameter | Specification | Notes |
|---|---|---|
| Thread Size | 5/16โณ-24 UNF | Class 2A fit, precision rolled |
| Head Style | Button Head (low profile) | Hex socket drive (Allen key) |
| Material Grade | Alloy Steel 10.9 / 12.9 | Also available in 304/316 SS |
| Hardness (HRC) | 38-42 HRC (Grade 12.9) | Tested per ASTM E18 |
| Tensile Strength (min) | 1,200 MPa | Verified per ISO 898-1 |
| Yield Strength (min) | 1,080 MPa | 0.2% offset method |
| Surface Finish | Black oxide / Zinc plated / Ni | Salt spray test: 72h+ (Zn) |
| Length Range | 1/4โณ to 4โณ (6.35mm โ 101.6mm) | Custom lengths available |
| Tolerance (Head Diameter) | ยฑ0.13mm | Per ASME B18.3 |
| Certifications | ISO 9001 ยท CE ยท RoHS ยท FCC ยท SGS | Full documentation provided |
| Packaging | Bulk / Box / Label / Custom | Private labeling supported |
๐ All data based on production batch #B24-05-07 ยท Third-party testing available upon request.
๐๏ธ Where 5/16 Button Head Cap Screw Delivers Real Impact
Agricultural Machinery
Used in tractor linkages and harvester sub-assemblies where vibration resistance is critical. 40% longer clamp life vs. Grade 8.8.
Automotive Components
Engine mounts, brake caliper brackets, and suspension linkage fasteners. Our 5/16-24 button head cap screw exceeds OEM torque-to-yield specs.
Construction & Structural
Steel-to-steel connections, scaffolding clamps, and heavy equipment guards. Zero failures in 500,000-cycle fatigue testing.
Industrial Machinery
Pump housings, conveyor systems, and robotic arm joints. The low-profile button head allows flush mounting in tight clearance areas.
๐ Trusted by industry leaders worldwide
๐ญ Our Production Facility
Hanguang Industrial Park, Handan ยท 30,000+ sqm ยท 10+ cold-forging lines ยท 200+ skilled workers
๐ Certifications & Compliance
โ ISO 9001:2015 ยท โ CE ยท โ RoHS ยท โ FCC ยท โ SGS-tested ยท โ Full batch traceability
๐ฑ Real-time client communication ยท 100% traceable order process
โญ What our customers say about 5/16-24 Button Head Cap Screw
โWe replaced our previous supplier with Boenโs 5/16-24 button head cap screw. Thread consistency is excellent โ zero galling issues across 12,000 units. 18% cost savings vs. our European distributor.โ
โThe tensile test reports they provided gave us confidence. Their 5/16 button head cap screw met our 12.9 grade spec with 2% margin. Lead time was 11 days โ 3 weeks faster than our usual source.โ
โWe use 5/16-24 button head cap screws in our harvester assembly line. Defect rate dropped from 4.2% to 0.3% after switching to Boen. Their QC documentation is world-class.โ
โ Frequently Asked Questions โ 5/16-24 Button Head Cap Screw
๐ What is the difference between 5/16-24 button head cap screw and standard hex cap screw?
The 5/16-24 button head cap screw has a lower profile, domed head with a hex socket drive, designed for flush or limited-clearance applications. The 24 TPI (UNF) thread provides finer adjustment and higher preload compared to coarse thread. Our version is cold-forged to Grade 12.9 for maximum strength.
๐งช What certifications do you provide for 5/16 button head cap screws?
We provide ISO 9001:2015, CE marking, RoHS compliance, and FCC documentation. Additional SGS or TรV third-party inspection reports are available at cost. Each batch includes material test certificates and dimensional inspection reports.
๐ Do you ship to USA, Europe, and Australia?
Yes. We ship to 30+ countries including the USA, UK, Germany, France, Netherlands, Australia, Canada, and UAE. We offer FOB, CIF, DDP, and EXW terms. Express shipping via DHL/FedEx/UPS takes 5-8 business days. Sea freight (LCL/FCL) is also available.
๐ต What is the MOQ for 5/16-24 button head cap screw?
Standard MOQ is 500 pcs per size. For OEM custom orders (special head marking, coating, or material), MOQ is 2,000 pcs. We offer tiered pricing at 1k, 5k, 10k, and 50k+ quantities. Free samples (up to 10 pcs) are available for qualified buyers.
๐ ๏ธ Can you customize the 5/16 button head cap screw with special coatings?
Absolutely. We offer zinc plating (clear/yellow/black), nickel plating, PTFE (Teflon), Dacromet, geomet, and hot-dip galvanizing. We also support custom drive types (Torx, Phillips, etc.) and head markings. Free DFM analysis within 48 hours for custom designs.
๐ How do I request a quote or place an order?
Simply email us at shuan@fastenboen.com or mary@fastenboen.com, or call/WhatsApp +86 15630072814. Provide your size, quantity, grade, and coating preference, and we will reply with a formal quotation within 4 hours during business hours (09:00-17:00 CST, Monday-Friday).
๐ What is your quality guarantee policy?
We offer 100% quality guarantee. If the product does not meet the agreed specifications, we will replace or refund within 30 days of receipt. We also provide batch traceability with unique lot numbers. Free samples are available for pre-order testing.
๐ฐ What payment methods do you accept?
We accept T/T (bank transfer), L/C (letter of credit), Western Union, and PayPal for small orders. For long-term contracts, we offer net 30/60 terms for qualified buyers after credit evaluation. All payments are processed through secure channels.
๐ Ready to upgrade your 5/16-24 Button Head Cap Screw supply chain?
Get factory-direct pricing, ISO-certified quality, and 7-15 day delivery. No middlemen. No compromises.
๐ Or call / WhatsApp: +86 15630072814 ยท โ๏ธ shuan@fastenboen.com ยท mary@fastenboen.com
๐ Business hours: Mon-Fri 09:00-17:00 CST ยท We respond to all inquiries within 4 hours
โ๏ธ About the Author
David Chang โ Senior Product Engineer at Handan Boen Fastener Manufacturing Co., Ltd. With 14 years of experience in cold-forging, heat treatment, and fastener quality systems, David has overseen 2,000+ B2B fastener supply projects for automotive, agricultural, and construction clients across Europe, the Americas, and Southeast Asia. He is a certified ISO 9001:2015 internal auditor and holds a degree in Mechanical Engineering from Hebei University of Technology.
