--- title: "Antique Brass Door Hardware Automatic Flush Door Bolt" description: "Antique Brass Door Hardware Automatic Flush Door Bolt — Eye Bolts & Lifting Eye Fasteners. Material: Stainless Steel. MOQ 500 pieces, US$1.44 – 2.40." url: https://engineeringhardware.com/product/antique-brass-door-hardware-automatic-flush-door-bolt/ source: Engineering Hardware & Fasteners --- # Antique Brass Door Hardware Automatic Flush Door Bolt [![Antique Brass Door Hardware Automatic Flush Door Bolt](https://img.engineeringhardware.com/Antique-Brass-Door-Hardware-Automatic-Flush-Door-Bolt.webp)](https://img.engineeringhardware.com/Antique-Brass-Door-Hardware-Automatic-Flush-Door-Bolt.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Eye Bolts & Lifting Eye Fasteners](https://engineeringhardware.com/fastener-products/bolts/eye-bolts-lifting-eye-fasteners/) Updated 2026-11-03 · [Markdown version](https://engineeringhardware.com/product/antique-brass-door-hardware-automatic-flush-door-bolt.md) Model no. **DDDB023 A** | **US$2.40**500–1,999 pieces | **US$1.44**2,000+ pieces | | --- | --- | MOQ 500 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Width:** 20mm - **Pin Diameter:** 12mm - **Finish:** Antique Brass - **Color:** Antique Brass - **Package Size:** 25.00cm * 15.00cm * 15.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Antique%20Brass%20Door%20Hardware%20Automatic%20Flush%20Door%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fantique-brass-door-hardware-automatic-flush-door-bolt%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 | | --- | --- | | Type | Spring Bolt | | Material | Stainless Steel | | Model NO. | DDDB023 A | | Thickness | 40mm | | Width | 20mm | | Pin Diameter | 12mm | | Finish | Antique Brass | | Usage | Door | | Color | Antique Brass | | Process | Extruding | | Transport Package | White Box or Color Box | | Specification | SGS | | Origin | Jiangmen Guangdong, China | | HS Code | 83021000 | | Production Capacity | 300, 000 Sets/Month | | Package Size | 25.00cm * 15.00cm * 15.00cm | | Package Gross Weight | 2.000kg | | More door hardware items include | 1. Stainless Steel Door Hinge- UL Listed & Fire Rated & CE Certificate | | Category | [Eye Bolts & Lifting Eye Fasteners](https://engineeringhardware.com/fastener-products/bolts/eye-bolts-lifting-eye-fasteners/) | ## Technical parameters | Product name | Antique Brass Door Hardware Automatic Flush Door Bolt | | --- | --- | | Product Model | DDDB023 | | Material | Stainless Steel | | Finish | SSS, PSS, GP, AB, AC, MB | | Suitable for | Wooden door, Metal door, steel door etc. | | MOQ | 500 PCS | | --- | --- | | Package | 1 PC / polybag / inner box in Standard export carton | | Sample time | 3-5 working days | | Production lead time | 20-25 days | | Shipping Port | Jiangmen , China / Shenzhen , China . | ## Description Antique Brass Door Hardware Automatic Flush Door Bolt is part of our eye bolts & lifting eye fasteners range (Bolts). ### Key details - **Type:** Spring Bolt - **Material:** Stainless Steel - **Finish:** Antique Brass - **Thickness:** 40mm - **Width:** 20mm - **Pin Diameter:** 12mm - **Usage:** Door - **Color:** Antique Brass Available configurations include material, width, pin diameter, finish and color. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 500 pieces at US$1.44 – 2.40 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 Antique Brass Door Hardware Automatic Flush Door Bolt? The listed minimum order is 500 pieces, at US$1.44 – 2.40 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$2.40 for 500–1,999 pieces; US$1.44 for 2,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Antique Brass Door Hardware Automatic Flush Door Bolt? Type: Spring Bolt; Material: Stainless Steel; Finish: Antique Brass; Thickness: 40mm; Width: 20mm; Pin Diameter: 12mm. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, width, pin diameter, finish and color. 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 eye bolts & lifting eye fasteners are available? The Eye Bolts & Lifting Eye Fasteners category lists 3,138 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/eye-bolts-lifting-eye-fasteners/](https://engineeringhardware.com/fastener-products/bolts/eye-bolts-lifting-eye-fasteners/) 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 Eye Bolts & Lifting Eye Fasteners →](https://engineeringhardware.com/fastener-products/bolts/eye-bolts-lifting-eye-fasteners/) [![Factory Wholesale Us Type Forged Shoulder Nut Eye Bolts G277](https://img.engineeringhardware.com/Factory-Wholesale-Us-Type-Forged-Shoulder-Nut-Eye-Bolts-G277.webp)](https://engineeringhardware.com/product/factory-wholesale-us-type-forged-shoulder-nut-eye-bolts-g277/) Eye Bolts & Lifting Eye Fasteners ### [Factory Wholesale Us Type Forged Shoulder Nut Eye Bolts G277](https://engineeringhardware.com/product/factory-wholesale-us-type-forged-shoulder-nut-eye-bolts-g277/) G-291 · DIN, ANSI, JIS **US$0.44**MOQ 200 pieces [![M1.6 to M64 ODM OEM Eye Bolt with Superior Corrosion Resistance](https://img.engineeringhardware.com/M1-6-to-M64-ODM-OEM-Eye-Bolt-with-Superior-Corrosion-Resistance.webp)](https://engineeringhardware.com/product/m1-6-to-m64-odm-oem-eye-bolt-with-superior-corrosion-resistance/) Eye Bolts & Lifting Eye Fasteners ### [M1.6 to M64 ODM OEM Eye Bolt with Superior Corrosion Resistance](https://engineeringhardware.com/product/m1-6-to-m64-odm-oem-eye-bolt-with-superior-corrosion-resistance/) Round Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.018 – 0.14**MOQ 200 pieces [![Carbon Steel Galvanized Lifting Eye Bolt Drop Forged Lifting Rigging](https://img.engineeringhardware.com/Carbon-Steel-Galvanized-Lifting-Eye-Bolt-Drop-Forged-Lifting-Rigging.webp)](https://engineeringhardware.com/product/carbon-steel-galvanized-lifting-eye-bolt-drop-forged-lifting-rigging/) Eye Bolts & Lifting Eye Fasteners ### [Carbon Steel Galvanized Lifting Eye Bolt Drop Forged Lifting Rigging](https://engineeringhardware.com/product/carbon-steel-galvanized-lifting-eye-bolt-drop-forged-lifting-rigging/) Round Head · DIN, ANSI, GB, JIS, BSW, GOST, ISO **US$0.096 – 0.16**MOQ 1,000 pieces [![Premium Grade Eye Bolt for Bridge Project Hoisting and Fixing Use](https://img.engineeringhardware.com/Premium-Grade-Eye-Bolt-for-Bridge-Project-Hoisting-and-Fixing-Use.webp)](https://engineeringhardware.com/product/premium-grade-eye-bolt-for-bridge-project-hoisting-and-fixing-use/) Eye Bolts & Lifting Eye Fasteners ### [Premium Grade Eye Bolt for Bridge Project Hoisting and Fixing Use](https://engineeringhardware.com/product/premium-grade-eye-bolt-for-bridge-project-hoisting-and-fixing-use/) Round Head · ISO,DIN,ANSI,JIS,BS **US$0.012 – 0.36**MOQ 1,000 pieces [![DIN580 Eye Bolt SS304-SS316 Marine Hardware Galvanized](https://img.engineeringhardware.com/DIN580-Eye-Bolt-SS304-SS316-Marine-Hardware-Galvanized.webp)](https://engineeringhardware.com/product/din580-eye-bolt-ss304-ss316-marine-hardware-galvanized/) Eye Bolts & Lifting Eye Fasteners ### [DIN580 Eye Bolt SS304-SS316 Marine Hardware Galvanized](https://engineeringhardware.com/product/din580-eye-bolt-ss304-ss316-marine-hardware-galvanized/) Bolt · Carbon Steel **US$0.18 – 12.60**MOQ 100 pieces [![Duplex Steel 2205 DIN444 Stainless Steel 304 Eye Bolt](https://img.engineeringhardware.com/Duplex-Steel-2205-DIN444-Stainless-Steel-304-Eye-Bolt.webp)](https://engineeringhardware.com/product/duplex-steel-2205-din444-stainless-steel-304-eye-bolt/) Eye Bolts & Lifting Eye Fasteners ### [Duplex Steel 2205 DIN444 Stainless Steel 304 Eye Bolt](https://engineeringhardware.com/product/duplex-steel-2205-din444-stainless-steel-304-eye-bolt/) Round Head · DIN **US$0.036 – 0.072**MOQ 1,000 pieces [![DIN 444 Swing Eye Bolt CNC Machined Carbon Steel 8.8 Grade M5-M39 for Construction Machinery Lifting](https://img.engineeringhardware.com/DIN-444-Swing-Eye-Bolt-CNC-Machined-Carbon-Steel-8-8-Grade-M5-M39-for-Construction-Machinery-Lifting.webp)](https://engineeringhardware.com/product/din-444-swing-eye-bolt-cnc-machined-carbon-steel-8-8-grade-m5-m39-for-construction/) Eye Bolts & Lifting Eye Fasteners ### [DIN 444 Swing Eye Bolt CNC Machined Carbon Steel 8.8 Grade M5-M39 for Construction Machinery Lifting](https://engineeringhardware.com/product/din-444-swing-eye-bolt-cnc-machined-carbon-steel-8-8-grade-m5-m39-for-construction/) According to The Needs of Customers · DIN, ANSI, JIS **US$0.13 – 6.00**MOQ 100 pieces [![DIN580 Stainless Steel Eye Bolt](https://img.engineeringhardware.com/DIN580-Stainless-Steel-Eye-Bolt.webp)](https://engineeringhardware.com/product/din580-stainless-steel-eye-bolt/) Eye Bolts & Lifting Eye Fasteners ### [DIN580 Stainless Steel Eye Bolt](https://engineeringhardware.com/product/din580-stainless-steel-eye-bolt/) Other · DIN **Price on request**MOQ 200,000 pieces **US$1.44 – 2.40**MOQ 500 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Antique%20Brass%20Door%20Hardware%20Automatic%20Flush%20Door%20Bolt%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fantique-brass-door-hardware-automatic-flush-door-bolt%2F)