--- title: "Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw" description: "Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw — Quarter-Turn, Captive & Panel Fasteners. MOQ 1,000 pieces, US$0.024 – 0.06." url: https://engineeringhardware.com/product/custom-big-flat-head-zinc-1-4-20-half-thread-panel-captive-screw/ source: Engineering Hardware & Fasteners --- # Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw [![Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw](https://img.engineeringhardware.com/Custom-Big-Flat-Head-Zinc-1-4-20-Half-Thread-Panel-Captive-Screw.webp)](https://img.engineeringhardware.com/Custom-Big-Flat-Head-Zinc-1-4-20-Half-Thread-Panel-Captive-Screw.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Specialty Fasteners › Quarter-Turn, Captive & Panel Fasteners](https://engineeringhardware.com/fastener-products/specialty-fasteners/quarter-turn-captive-panel-fasteners/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/custom-big-flat-head-zinc-1-4-20-half-thread-panel-captive-screw.md) Model no. **SS-041** | **US$0.06**1,000–4,999 pieces | **US$0.024**5,000+ pieces | | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Finish:** Plain, Zinc - **Grade:** 8.8 - **Material:** Carbon Steel - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Size:** Custom - **Head Style:** Round - **Package Size:** 14.00cm * 8.00cm * 10.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Custom%20Big%20Flat%20Head%20Zinc%201%2F4-20%20Half%20Thread%20Panel%20Captive%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fcustom-big-flat-head-zinc-1-4-20-half-thread-panel-captive-screw%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 | | --- | --- | | Finish | Plain, Zinc | | Grade | 8.8 | | Model NO. | SS-041 | | Material | Carbon Steel | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Shape | Captive Screw | | Size | Custom | | Application | Machine | | Type | Round Head | | Groove | Cross | | Connection | Common Bolt | | Head Style | Round | | Transport Package | Carton Boxes+Plastic Bags | | Specification | Customized | | Origin | China | | HS Code | 7415339000 | | Production Capacity | 1000000 Per Year | | Package Size | 14.00cm * 8.00cm * 10.00cm | | Package Gross Weight | 0.500kg | | Category | [Quarter-Turn, Captive & Panel Fasteners](https://engineeringhardware.com/fastener-products/specialty-fasteners/quarter-turn-captive-panel-fasteners/) | ## Technical parameters | Standard | ISO, JIS, GB, ANSI, BSW, DIN or non standard as customize | | --- | --- | | Material | 1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS4202.Steel:C45(K1045), C46(K1046),C203.Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40)4.Bronze: C51000, C52100, C54400, etc5.Iron: 1213, 12L14,12156.Aluminum/ Aluminum Alloy: Al6061, Al6063 etc7.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045, C435#, 40CrMo, 42CrMo8.Alloy steel: SCM435,10B219.Titanium | | Grade | 4.8,6.8,8.8,12.9,etc | | Size | M3-M24 or made to print as customer's specification | | Specifications | Various shape size according to client's requirement | | Thread | unc,unf,metric thread | | Finish | Plain, Zinc Plated(Clear/Blue/Yellow/Black), black oxide, H.D.G, DAC,GOEMET, as custom need | | Payment term | T/T 30 % deposit, 70% balance payment before shipment | | Package | solid cardboard box pack or kit packed | ## Description Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw is part of our quarter-turn, captive & panel fasteners range (Specialty Fasteners). ### Key details - **Type:** Round Head - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Carbon Steel - **Grade:** 8.8 - **Size:** Custom - **Head Style:** Round - **Groove:** Cross - **Finish:** Plain, Zinc Available configurations include finish, grade, material, standard and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1,000 pieces at US$0.024 – 0.06 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 Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw? The listed minimum order is 1,000 pieces, at US$0.024 – 0.06 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$0.06 for 1,000–4,999 pieces; US$0.024 for 5,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Custom Big Flat Head Zinc 1/4-20 Half Thread Panel Captive Screw? Type: Round Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Carbon Steel; Grade: 8.8; Size: Custom; Head Style: Round. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include finish, grade, material, standard and size. 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 quarter-turn, captive & panel fasteners are available? The Quarter-Turn, Captive & Panel Fasteners category lists 403 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/specialty-fasteners/quarter-turn-captive-panel-fasteners/](https://engineeringhardware.com/fastener-products/specialty-fasteners/quarter-turn-captive-panel-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 Quarter-Turn, Captive & Panel Fasteners →](https://engineeringhardware.com/fastener-products/specialty-fasteners/quarter-turn-captive-panel-fasteners/) [![Weld Cage Captive Clip Nut](https://img.engineeringhardware.com/Weld-Cage-Captive-Clip-Nut.webp)](https://engineeringhardware.com/product/weld-cage-captive-clip-nut/) Quarter-Turn, Captive & Panel Fasteners ### [Weld Cage Captive Clip Nut](https://engineeringhardware.com/product/weld-cage-captive-clip-nut/) Square Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.0072**MOQ 50 pieces [![Stainless Steel PF10 Rivet on Captive Screw Knurled Spring Screw for Device Panel 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Chassis](https://img.engineeringhardware.com/Partially-Threaded-Hexagon-Socket-Captive-Screw-SUS304-Knurled-Cup-Head-Allen-Fastener-for-Industrial-Chassis.webp)](https://engineeringhardware.com/product/partially-threaded-hexagon-socket-captive-screw-sus304-knurled-cup-head-allen/) Quarter-Turn, Captive & Panel Fasteners ### [Partially Threaded Hexagon Socket Captive Screw SUS304 Knurled Cup Head Allen Fastener for Industrial Chassis](https://engineeringhardware.com/product/partially-threaded-hexagon-socket-captive-screw-sus304-knurled-cup-head-allen/) Cup Head · DIN **US$0.012 – 2.40**MOQ 100 pieces **US$0.024 – 0.06**MOQ 1,000 piecesGet a 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