--- title: "Hexagon Socket Head Cap Screw ASME 18.3" description: "Hexagon Socket Head Cap Screw ASME 18.3 — Socket Head Cap & Allen Screws. Material: Stainless Steel, Standard: ANSI. MOQ 1,000 pieces, US$0.60." url: https://engineeringhardware.com/product/hexagon-socket-head-cap-screw-asme-18-3/ source: Engineering Hardware & Fasteners --- # Hexagon Socket Head Cap Screw ASME 18.3 [![Hexagon Socket Head Cap Screw ASME 18.3](https://img.engineeringhardware.com/Hexagon-Socket-Head-Cap-Screw-ASME-18-3.webp)](https://img.engineeringhardware.com/Hexagon-Socket-Head-Cap-Screw-ASME-18-3.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/hexagon-socket-head-cap-screw-asme-18-3.md) Model no. **ASME B18.3** US$0.60 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Hexagonal - **Standard:** ANSI - **Grade:** 12.9 - **Other standards:** GB,DIN,JISB,ISO,ANSI/ASME,Non-standards - **Size:** M3-M33 - **Finish:** Plain/white Zinc Plated Cr3+ Cr6+/Yellow Zinc Plated/Black Zinc Plated/Black/Heat Treatment/H.D.G./Dacrotized - **Packing:** 25kgs/CTNS with pallet or as customer's special requirement Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Hexagon%20Socket%20Head%20Cap%20Screw%20ASME%2018.3%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhexagon-socket-head-cap-screw-asme-18-3%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 | Stainless Steel | | Type | Hexagon Head | | Model NO. | ASME B18.3 | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | ANSI | | Grade | 12.9 | | Transport Package | Carton or Bag | | Specification | M3-M33 | | Origin | China Mainland | | HS Code | 7318159001 | | Production Capacity | 1000 T/ Month | | Product Name | Hex Socket Cap Screw | | Other standards | GB,DIN,JISB,ISO,ANSI/ASME,Non-standards | | Size | M3-M33 | | Brass | C1010 | | Finish | Plain/white Zinc Plated Cr3+ Cr6+/Yellow Zinc Plated/Black Zinc Plated/Black/Heat Treatment/H.D.G./Dacrotized | | Payment Terms | T/T L/C | | Packing | 25kgs/CTNS with pallet or as customer's special requirement | | Label | Our label or Customer's label | | Other service | OEM provided | | Delivery times | 30 days | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Low carbon steel: | Middle Carbon Steel: | Alloy Steel: | Stainless Steel: | Brass: | | --- | --- | --- | --- | --- | | C1010 | C1030/1035/1040/1045 | 40Cr | SUS304 SUS316 | | ## Description Hexagon Socket Head Cap Screw ASME 18.3 is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Hexagon Head - **Standard:** ANSI - **Material:** Stainless Steel - **Grade:** 12.9 - **Size:** M3-M33 - **Head Style:** Hexagonal - **Groove:** Hexagon - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and other standards. 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$0.60 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 Hexagon Socket Head Cap Screw ASME 18.3? The listed minimum order is 1,000 pieces, at US$0.60 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### What are the main specifications of Hexagon Socket Head Cap Screw ASME 18.3? Type: Hexagon Head; Standard: ANSI; Material: Stainless Steel; Grade: 12.9; Size: M3-M33; Head Style: Hexagonal. 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 other standards. 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 socket head cap & allen screws are available? The Socket Head Cap & Allen Screws category lists 2,042 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) 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 Socket Head Cap & Allen Screws →](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) [![Gr7 Hexagon Socket Head Cap Screw GB/70.1](https://img.engineeringhardware.com/Gr7-Hexagon-Socket-Head-Cap-Screw-GB-70-1.webp)](https://engineeringhardware.com/product/gr7-hexagon-socket-head-cap-screw-gb-70-1/) Socket Head Cap & Allen Screws ### [Gr7 Hexagon Socket Head Cap Screw GB/70.1](https://engineeringhardware.com/product/gr7-hexagon-socket-head-cap-screw-gb-70-1/) Hexagon Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.36 – 2.40**MOQ 300 pieces [![Sinotruk Sitrak Hexagon Socket Head Cap Screw GB / T70.1 – Fine Thread – M16X1.5X100 – 10.9 – Man183 – B1 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