--- title: "Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe" description: "Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut… — Thumb, Hand & Knurled Screws. MOQ 1,000 pieces, US$0.06 – 0.12." url: https://engineeringhardware.com/product/thumb-screw-plastic-round-shape-head-threaded-knurled-grip-knobs-clamping-screw-with/ source: Engineering Hardware & Fasteners --- # Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe [![Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe](https://img.engineeringhardware.com/Thumb-Screw-Plastic-Round-Shape-Head-Threaded-Knurled-Grip-Knobs-Clamping-Screw-with-Nut-Washe.webp)](https://img.engineeringhardware.com/Thumb-Screw-Plastic-Round-Shape-Head-Threaded-Knurled-Grip-Knobs-Clamping-Screw-with-Nut-Washe.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Thumb, Hand & Knurled Screws](https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/thumb-screw-plastic-round-shape-head-threaded-knurled-grip-knobs-clamping-screw-with.md) US$0.06 – 0.12 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Head Style:** Round - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Grade:** 4.8 - **Material:** Carbon Steel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Thumb%20Screw%20Plastic%20Round%20Shape%20Head%20Threaded%20Knurled%20Grip%20Knobs%20Clamping%20Screw%20with%20Nut%20Washe%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fthumb-screw-plastic-round-shape-head-threaded-knurled-grip-knobs-clamping-screw-with%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 | Groove | M Word | | --- | --- | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, ANSI, ASME, Ifi, ISO | | Grade | 4.8 | | MOQ | 1000PCS | | Certificate | ISO;SGS; RoHS;TUV;ISO9001 | | Sampling Time | 3~5 Workdays | | Transport Package | Bulk in Carton. Then in Pallet | | Specification | M4-M20 | | Origin | China | | HS Code | 731814 | | Production Capacity | 100tons/Month | | Customization | Available | | Material | Carbon Steel | | Type | Round Head | | Durable to use | these Hand Knob Bolts are made of plastic and steel, the screw head is made of plastic, The studs are made of threaded carbon steel, rust resistant and corrosion resistant, can serve for a long time. | | Wide range of applications | these thread replacement are widely used as replacements, accessories, jigs and fixtures etc. | | Easy to use | these hand screw knob replacement are easy to tighten/loosen and no extra tool required, They definitely will | | Category | [Thumb, Hand & Knurled Screws](https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-screws/) | ## Technical parameters | Product name | Plastic Knob Screws | | --- | --- | | thumb screw Material | Plastic head ,304 stainless steel screw Plastic Knob Screws | | thumb screw Size | Customized Plastic Knob Screws | | Finish | Polishing; Anodize; Nickel, Zinc, Tin, chrome,Silver plating etc. It also can be environmentally friendly Plastic Knob Screws | | Tolerance | 0.01mm Plastic Knob Screws | | Application | Widely used in electronics, hardware, lighting, toys, sanitary ware, furniture, medical, sports equipment and other industries. Plastic Knob Screws | | Sample | welcome to get samples to testt | ## Description Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe is part of our thumb, hand & knurled screws range (Screws). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Material:** Carbon Steel - **Grade:** 4.8 - **Head Style:** Round - **Groove:** M Word - **Connection:** Common Bolt - **Certificate:** ISO;SGS; RoHS;TUV;ISO9001 Available configurations include head style, standard, grade and material. 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$0.06 – 0.12 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 Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe? The listed minimum order is 1,000 pieces, at US$0.06 – 0.12 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 Thumb Screw Plastic Round Shape Head Threaded Knurled Grip Knobs Clamping Screw with Nut Washe? Type: Round Head; Standard: DIN, ANSI, ASME, Ifi, ISO; Material: Carbon Steel; Grade: 4.8; Head Style: Round; Groove: M Word. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include head style, standard, grade and material. 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 thumb, hand & knurled screws are available? The Thumb, Hand & Knurled Screws category lists 712 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-screws/](https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-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 Thumb, Hand & Knurled Screws →](https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-screws/) [![CNC Machined #6 #8 1/4 Black Knurled Head Hand Adjusting Thumb Screw](https://img.engineeringhardware.com/CNC-Machined-6-8-1-4-Black-Knurled-Head-Hand-Adjusting-Thumb-Screw.webp)](https://engineeringhardware.com/product/cnc-machined-6-8-1-4-black-knurled-head-hand-adjusting-thumb-screw/) Thumb, Hand & Knurled Screws ### [CNC Machined #6 #8 1/4 Black Knurled Head Hand Adjusting Thumb Screw](https://engineeringhardware.com/product/cnc-machined-6-8-1-4-black-knurled-head-hand-adjusting-thumb-screw/) Thumb Screw · DIN **US$0.024 – 0.06**MOQ 1,000 pieces [![Plum Handle Screw Hand Screw Bolt Torx Plastic Head Thumb Screws with Handle Rubber Head1/4 5/16 3/8 M4 M5 M6 M8 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Screws](https://engineeringhardware.com/product/tip-feet-clamping-tighten-grip-knob-plastic-head-thumb-screws/) Customized Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.11 – 0.23**MOQ 100 pieces **US$0.06 – 0.12**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Thumb%20Screw%20Plastic%20Round%20Shape%20Head%20Threaded%20Knurled%20Grip%20Knobs%20Clamping%20Screw%20with%20Nut%20Washe%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fthumb-screw-plastic-round-shape-head-threaded-knurled-grip-knobs-clamping-screw-with%2F)