Hot-dip galvanized square head machine bolts for pole line and crossarm assemblies. Send dimensions and quantities to Kangnaigu for a quotation.
WhatsApp：+86 17733036295
E-mail：info@kangnaigu.net
Phone Line：+86 13333199538
Address：Dalian Office, Shahe City, Xingtai City, Hebei Province
Hot-dip galvanized square head machine bolts for pole line and crossarm assemblies. Send dimensions and quantities to Kangnaigu for a quotation.| Product Name | Square Head Bolt |
| Material | Carbon Steel Q235; Grade 4.8 / 8.8; 304 / 316 stainless steel optional |
| Head Type | Square head, anti-rotation design, fits channel rail |
| Thread Spec | Metric coarse thread M10 / M12 / M14 / M16 / M20 |
| Available Length | 40 ~ 300 mm, custom length acceptable |
| Standard | GB/T 8, ISO 4017, ASTM A307 |
| Origin | Hebei · Handan · Yongnian — Integrated Manufacturer & Exporter |
| MOQ | 500 PCS (negotiable for trial orders) |
| Tensile Strength Grade 4.8 | ≥400 MPa |
| Tensile Strength Grade 8.8 | ≥800 MPa |
| Thread Tolerance | 6g, match standard hex nuts |
| Working Temperature | -40 ℃ ~ +100 ℃ |
| Hot Dip Galvanized (HDG) | ≥85 μm, default, for PV bracket, power and outdoor steel structure |
| Zinc-Aluminum-Magnesium | 10~20 μm, high anti-corrosion requirement |
| Electro Galvanized | ≥8 μm, for dry indoor environment |
| Stainless Steel Original | 304 / 316, for coastal corrosive areas |
Half thread / full thread can be customized. Matching nuts and washers available.
| Model | Thread Size | Square Head(mm) | Length Range(mm) | Grade | Weight(kg/100pcs) |
|---|---|---|---|---|---|
| SB-M10 | M10 | 16 | 40~150 | 4.8 / 8.8 | 5.2 |
| SB-M12 | M12 | 18 | 50~200 | 4.8 / 8.8 | 8.6 |
| SB-M14 | M14 | 21 | 60~220 | 4.8 / 8.8 | 12.5 |
| SB-M16 | M16 | 24 | 70~250 | 4.8 / 8.8 | 18.2 |
| SB-M20 | M20 | 30 | 80~300 | 4.8 / 8.8 | 29.6 |
| Applications | PV bracket, halfen channel embedment, power fittings, steel bracket, pipe hanger, curtain wall, rail channel fixing |
| Packaging | Woven bag / carton, pallet packing for bulk cargo |
| Documents | PI, Packing List, Certificate of Origin, ISO 9001, Mill Test Certificate |
| Payment Terms | 30% T/T in advance, balance before shipment |
| Lead Time | 7 – 20 days according to specs and quantity |
Please provide thread size, bolt length, strength grade, surface treatment and quantity. Advise if you need matching nuts, flat washers and spring washers together.
Email: info@kangnaigu.net
© 2023 - 2026 Copyright Hebei Kangnaigu Supply Chain Management Co., Ltd. , All Rights Reserved. Sitemap
Get a quote
Also Like
