--- title: "Flat Square Head Bolt T Bolt Zinc Coating" description: "Flat Square Head Bolt T Bolt Zinc Coating — T-Bolts & T-Slot Bolts. Material: Carbon Steel, Standard: DIN, ANSI, GB. MOQ 3,000 pieces, US$0.0624 – 0.0768." url: https://engineeringhardware.com/product/flat-square-head-bolt-t-bolt-zinc-coating/ source: Engineering Hardware & Fasteners --- # Flat Square Head Bolt T Bolt Zinc Coating [![Flat Square Head Bolt T Bolt Zinc Coating](https://img.engineeringhardware.com/Flat-Square-Head-Bolt-T-Bolt-Zinc-Coating.webp)](https://img.engineeringhardware.com/Flat-Square-Head-Bolt-T-Bolt-Zinc-Coating.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › T-Bolts & T-Slot Bolts](https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-bolts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/flat-square-head-bolt-t-bolt-zinc-coating.md) Model no. **GB, DIN, ISO** | **US$0.0768**3,000–9,999 pieces | **US$0.0708**10,000–29,999 pieces | **US$0.0624**30,000+ pieces | | --- | --- | --- | MOQ 3,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Square - **Standard:** DIN, ANSI, GB - **Grade:** 8.8 - **Finish:** Blue-White Zinc Plated - **Size:** M3-M30 - **Thread:** Unc,Unf - **Color:** Silver, White, Black, Yellow, etc. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Flat%20Square%20Head%20Bolt%20T%20Bolt%20Zinc%20Coating%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fflat-square-head-bolt-t-bolt-zinc-coating%2F) Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order. ## Specifications | Customization | Available | | --- | --- | | Material | Carbon Steel | | Type | Square Head | | Model NO. | GB, DIN, ISO | | Connection | Common Bolt | | Head Style | Square | | Standard | DIN, ANSI, GB | | Grade | 8.8 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Blue-White Zinc Plated | | Size | M3-M30 | | Samples | Free Samples When Is in Stock | | Drawing | Accept | | Quality | 100% | | Thread | Unc,Unf | | Delivery Time | 5-20 Days | | Color | Silver, White, Black, Yellow, etc. | | Stock | Depend on The Size and Requirement | | Equipments | CNC Lathe, Processing Center, Miller, etc | | Transport Package | Cartons+Wooden Pallets+Plastic Bag | | Specification | 280*250*180 | | Origin | China | | HS Code | 7318159090 | | Production Capacity | 3000000 Pieces/ Month | | Package Size | 27.50cm * 25.00cm * 25.00cm | | Package Gross Weight | 20.000kg | | Lead Time | 3 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces) | | Category | [T-Bolts & T-Slot Bolts](https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-bolts/) | ## Technical parameters | Standard | GB,ISO,ANSI | | --- | --- | | Diameter | M3-M30 | | sample service | Free sample but freight cost is paid by customers(when sample is in stock) sample fee(when samples need to be customized) | | Material | SS304,SS316,SS2205,SS2507, Carbon steel. | | MOQ | 1000pcs | | Surface treatment | Plain, black oxide, HDG, Zinc, etc. | | Package | Plastic bag, Boxes and cartons, Pallets, Customized | | Price terms | EXW, FOB, CIF, etc. | | Payment terms | T/T, Paypal, L/C, Western union, etc. | | Certifications | ISO 9001 | | Note | Free Samples could be provided for standard fastener | ## Description Flat Square Head Bolt T Bolt Zinc Coating is part of our t-bolts & t-slot bolts range (Bolts). ### Key details - **Type:** Square Head - **Standard:** DIN, ANSI, GB - **Material:** Carbon Steel - **Grade:** 8.8 - **Size:** M3-M30 - **Thread:** Unc,Unf - **Head Style:** Square - **Finish:** Blue-White Zinc Plated Available configurations include material, head style, standard, grade and finish. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 3,000 pieces at US$0.0624 – 0.0768 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you. ## Frequently asked questions ### What is the minimum order quantity (MOQ) for Flat Square Head Bolt T Bolt Zinc Coating? The listed minimum order is 3,000 pieces, at US$0.0624 – 0.0768 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### How does the price change with quantity? Volume pricing: US$0.0768 for 3,000–9,999 pieces; US$0.0708 for 10,000–29,999 pieces; US$0.0624 for 30,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Flat Square Head Bolt T Bolt Zinc Coating? Type: Square Head; Standard: DIN, ANSI, GB; Material: Carbon Steel; Grade: 8.8; Size: M3-M30; Thread: Unc,Unf. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, head style, standard, grade and finish. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing. ### What is the lead time and how is it shipped? Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment. ### Which other t-bolts & t-slot bolts are available? The T-Bolts & T-Slot Bolts category lists 593 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-bolts/](https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-bolts/) How we work ## Specified, checked and shipped by Engineering Hardware & Fasteners Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing. - DIN, ISO, ASTM, ANSI, JIS and GB standard parts - Non-standard parts made to your drawing - Dimensions, thread gauges and plating checked before packing - Export cartons and pallets, consolidated mixed orders - Samples available for approval before mass production [![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp) Production floor [![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp) Inspection bench [![Sorting & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp) Sorting & packing [![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp) Parts warehouse [![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp) Sample review [![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp) Sales office [More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All T-Bolts & T-Slot Bolts →](https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-bolts/) [![OEM Custom M2 M3 M4 304 Stainless Steel Fastener T-Bolts](https://img.engineeringhardware.com/OEM-Custom-M2-M3-M4-304-Stainless-Steel-Fastener-T-Bolts.webp)](https://engineeringhardware.com/product/oem-custom-m2-m3-m4-304-stainless-steel-fastener-t-bolts/) T-Bolts & T-Slot Bolts ### [OEM Custom M2 M3 M4 304 Stainless Steel Fastener T-Bolts](https://engineeringhardware.com/product/oem-custom-m2-m3-m4-304-stainless-steel-fastener-t-bolts/) T Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.012 – 0.60**MOQ 1,000 pieces [![Non-Standard Square Slider Machine Screws T-Bolts Thin Square Head Bolts](https://img.engineeringhardware.com/Non-Standard-Square-Slider-Machine-Screws-T-Bolts-Thin-Square-Head-Bolts.webp)](https://engineeringhardware.com/product/non-standard-square-slider-machine-screws-t-bolts-thin-square-head-bolts/) T-Bolts & T-Slot Bolts ### [Non-Standard Square Slider Machine Screws T-Bolts Thin Square Head Bolts](https://engineeringhardware.com/product/non-standard-square-slider-machine-screws-t-bolts-thin-square-head-bolts/) Stainless Steel · Custom **US$0.012 – 0.024**MOQ 10,000 pieces [![Non-Satandered a-Grade Stainless Steel Special T Bolt M10*35](https://img.engineeringhardware.com/Non-Satandered-a-Grade-Stainless-Steel-Special-T-Bolt-M10-35.webp)](https://engineeringhardware.com/product/non-satandered-a-grade-stainless-steel-special-t-bolt-m10-35/) T-Bolts & T-Slot Bolts ### [Non-Satandered a-Grade Stainless Steel Special T Bolt M10*35](https://engineeringhardware.com/product/non-satandered-a-grade-stainless-steel-special-t-bolt-m10-35/) T Head · DIN, ANSI, GB, BSW **US$0.24 – 1.20**MOQ 1,000 pieces [![Stainless Steel M6 T Bolt Square Neck T-Type Bolt T Head Bolt](https://img.engineeringhardware.com/Stainless-Steel-M6-T-Bolt-Square-Neck-T-Type-Bolt-T-Head-Bolt.webp)](https://engineeringhardware.com/product/stainless-steel-m6-t-bolt-square-neck-t-type-bolt-t-head-bolt/) T-Bolts & T-Slot Bolts ### [Stainless Steel M6 T Bolt Square Neck T-Type Bolt T Head Bolt](https://engineeringhardware.com/product/stainless-steel-m6-t-bolt-square-neck-t-type-bolt-t-head-bolt/) T Head · DIN, ANSI, GB, JIS **US$0.0384 – 0.15**MOQ 3,000 pieces [![Hot Sale Rectangle Square Bolts Stainless Steel Head Shape T Bolt](https://img.engineeringhardware.com/Hot-Sale-Rectangle-Square-Bolts-Stainless-Steel-Head-Shape-T-Bolt.webp)](https://engineeringhardware.com/product/hot-sale-rectangle-square-bolts-stainless-steel-head-shape-t-bolt/) T-Bolts & T-Slot Bolts ### [Hot Sale Rectangle Square Bolts Stainless Steel Head Shape T Bolt](https://engineeringhardware.com/product/hot-sale-rectangle-square-bolts-stainless-steel-head-shape-t-bolt/) T Head · DIN **US$0.012 – 0.06**MOQ 2,000 pieces [![Factory Price Aluminum Profile Accessories T Bolts Customized T-Shaped Aluminum Profile Bolt](https://img.engineeringhardware.com/Factory-Price-Aluminum-Profile-Accessories-T-Bolts-Customized-T-Shaped-Aluminum-Profile-Bolt.webp)](https://engineeringhardware.com/product/factory-price-aluminum-profile-accessories-t-bolts-customized-t-shaped-aluminum/) T-Bolts & T-Slot Bolts ### [Factory Price Aluminum Profile Accessories T Bolts Customized T-Shaped Aluminum Profile Bolt](https://engineeringhardware.com/product/factory-price-aluminum-profile-accessories-t-bolts-customized-t-shaped-aluminum/) Pin · 100% Inspection **US$0.12 – 0.60**MOQ 500 pieces [![T Bolt Stainless Steel 304 T Head](https://img.engineeringhardware.com/T-Bolt-Stainless-Steel-304-T-Head.webp)](https://engineeringhardware.com/product/t-bolt-stainless-steel-304-t-head/) T-Bolts & T-Slot Bolts ### [T Bolt Stainless Steel 304 T Head](https://engineeringhardware.com/product/t-bolt-stainless-steel-304-t-head/) Hexagon Head · DIN, GB **US$0.048 – 10.27**MOQ 100 pieces [![Custom Non-Standard Anodized Aluminum T Bolt with Slide in T Nut Stainless Carbon Alloy Steel](https://img.engineeringhardware.com/Custom-Non-Standard-Anodized-Aluminum-T-Bolt-with-Slide-in-T-Nut-Stainless-Carbon-Alloy-Steel.webp)](https://engineeringhardware.com/product/custom-non-standard-anodized-aluminum-t-bolt-with-slide-in-t-nut-stainless-carbon/) T-Bolts & T-Slot Bolts ### [Custom Non-Standard Anodized Aluminum T Bolt with Slide in T Nut Stainless Carbon Alloy Steel](https://engineeringhardware.com/product/custom-non-standard-anodized-aluminum-t-bolt-with-slide-in-t-nut-stainless-carbon/) Round Head · Customized **US$0.006 – 0.012**MOQ 1,000 pieces **US$0.0624 – 0.0768**MOQ 3,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Flat%20Square%20Head%20Bolt%20T%20Bolt%20Zinc%20Coating%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fflat-square-head-bolt-t-bolt-zinc-coating%2F)