--- title: "Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw" description: "Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw — Thumb, Hand & Knurled Screws. MOQ 2,000 pieces, US$0.054 – 0.42." url: https://engineeringhardware.com/product/plum-shape-clamping-knob-grip-thumb-screw-head-diameter-38mm-knobs-nut-screw/ source: Engineering Hardware & Fasteners --- # Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw [![Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw](https://img.engineeringhardware.com/Plum-Shape-Clamping-Knob-Grip-Thumb-Screw-Head-Diameter-38mm-Knobs-Nut-Screw.webp)](https://img.engineeringhardware.com/Plum-Shape-Clamping-Knob-Grip-Thumb-Screw-Head-Diameter-38mm-Knobs-Nut-Screw.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/plum-shape-clamping-knob-grip-thumb-screw-head-diameter-38mm-knobs-nut-screw.md) Model no. **30#** US$0.054 – 0.42 / piece MOQ 2,000 pieces · Final price confirmed in your quote - **Head Style:** Plum Shaped Screw - **Color:** Black (Colorable) - **Size:** Customized - **Product Outer Packaging Size:** 25*25*20(Cm) - **Material:** PP,ABS,PA,Iron Plated with White Zinc,SUS304 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Plum%20Shape%20Clamping%20Knob%20Grip%20Thumb%20Screw%20Head%20Diameter%2038mm%20Knobs%20Nut%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fplum-shape-clamping-knob-grip-thumb-screw-head-diameter-38mm-knobs-nut-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 | Model NO. | 30# | | --- | --- | | Connection | Common Bolt | | Head Style | Plum Shaped Screw | | Color | Black (Colorable) | | Size | Customized | | MOQ | 2000 | | Product Outer Packaging Size | 25*25*20(Cm) | | Gross Weight | 10(Kg) | | Estimated Delivery Time | 7 Days | | Pay | Order Production After 100% Full Payment | | Transport Package | Carton | | Specification | M4*20 | | Origin | Guangdong, China | | Production Capacity | 1000000 Per Month | | Customization | Available | | Material | PP,ABS,PA,Iron Plated with White Zinc,SUS304 | | Type | Plum Shaped Screw | | Category | [Thumb, Hand & Knurled Screws](https://engineeringhardware.com/fastener-products/screws/thumb-hand-knurled-screws/) | ## Technical parameters | name | Specifications | Screw thread length | glue head color | plastic material | metal material | | --- | --- | --- | --- | --- | --- | | 10 # -20 # plastic head thumb screw (metric) | M4,M5,M6 | 10mm20mm 30mm40mm | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 10 # -20 # plastic head thumb screw (imperial system) | 10#,1/4, | 1/4,1/2 ,3/4,1",2" | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 10 # -20 # Plastic Head Thumb Nut (Metric) | M4,M5,M6 | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 10 # -20 # Plastic Head Thumb Nut (Imperial) | 10#,1/4, | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 20 # -30 # plastic head thumb screw (metric) | M4,M5,M6,M8 | 10mm20mm 30mm40mm 50mm 60mm | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 20 # -30 # plastic head thumb screw (imperial system) | 10#,1/4,5/16 | 1/4,1/2 ,3/4,1",2" | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 20 # -30 # Plastic Head Thumb Nut (Metric) | M4,M5,M6 | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 20 # -30 # Plastic Head Thumb Nut (Imperial) | 10#,1/4, | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 30 # -40 # plastic head thumb screw (metric) | M5,M6,M8,M10 | 16mm20mm 30mm40mm50mm60mm | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 30 # -40 # plastic head thumb screw (imperial system) | 10#,1/4,5/16,3/8 | 1/4,1/2 ,3/4,1",2" | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 30 # -40 # Plastic Head Thumb Nut (Metric) | M4,M5,M6 | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 30 # -40 # Plastic Head Thumb Nut (Imperial) | 10#,1/4, | 10mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 40 # or above plastic head thumb screw (metric) | M5,M6,M8,M10,M12 | 16mm20mm 30mm40mm50mm60mm | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 40 # or above plastic head thumb screw (imperial system) | 10#,1/4,5/16,3/8 | 1/4,1/2 ,3/4,1",2" | Black (colorable) | PP,ABS,PA | Iron plated with white zinc,SUS304 | | 40 # or above plastic head thumb nut (metric) | M5,M6,M8,M10,M12 | 16mm20mm 30mm40mm50mm60mm | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | | 40 # or above plastic head thumb nut (imperial system) | 10#,1/4,5/16,3/8 | 1/4,1/2 ,3/4,1",2" | Black (colorable) | PP,ABS,PA | Copper mother, iron plated white zinc mother | ## Description Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw is part of our thumb, hand & knurled screws range (Screws). ### Key details - **Type:** Plum Shaped Screw - **Material:** PP,ABS,PA,Iron Plated with White Zinc,SUS304 - **Size:** Customized - **Head Style:** Plum Shaped Screw - **Connection:** Common Bolt - **Color:** Black (Colorable) - **Product Outer Packaging Size:** 25*25*20(Cm) - **Gross Weight:** 10(Kg) Available configurations include head style, color, size, product outer packaging size and material. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 2,000 pieces at US$0.054 – 0.42 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 Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw? The listed minimum order is 2,000 pieces, at US$0.054 – 0.42 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 Plum Shape Clamping Knob Grip Thumb Screw Head Diameter 38mm Knobs Nut Screw? Type: Plum Shaped Screw; Material: PP,ABS,PA,Iron Plated with White Zinc,SUS304; Size: Customized; Head Style: Plum Shaped Screw; Connection: Common Bolt; Color: Black (Colorable). 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, color, size, product outer packaging size 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 & 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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/) [![M4 M5 M6 M8 Round Flat Spade Head Black Blue Silver Racket Thumb Screws Racket Screw](https://img.engineeringhardware.com/M4-M5-M6-M8-Round-Flat-Spade-Head-Black-Blue-Silver-Racket-Thumb-Screws-Racket-Screw.webp)](https://engineeringhardware.com/product/m4-m5-m6-m8-round-flat-spade-head-black-blue-silver-racket-thumb-screws-racket-screw/) Thumb, Hand & Knurled Screws ### [M4 M5 M6 M8 Round Flat Spade Head Black Blue Silver Racket Thumb Screws Racket Screw](https://engineeringhardware.com/product/m4-m5-m6-m8-round-flat-spade-head-black-blue-silver-racket-thumb-screws-racket-screw/) Round Head · GB, ISO **US$0.012 – 0.036**MOQ 10,000 pieces [![Brass Knurled Thumb Screws with Integrated Washer Vibration Proof /PCB/DIY 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Use](https://engineeringhardware.com/product/zinc-plated-carbon-steel-plastic-knob-thumb-screw-for-leveling-use/) Thumb Screw · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012 – 0.60**MOQ 1,000 pieces [![Wing Thumb Screw Butterfly Head Hand Screw Custom Length Industrial Fastener](https://img.engineeringhardware.com/Wing-Thumb-Screw-Butterfly-Head-Hand-Screw-Custom-Length-Industrial-Fastener.webp)](https://engineeringhardware.com/product/wing-thumb-screw-butterfly-head-hand-screw-custom-length-industrial-fastener/) Thumb, Hand & Knurled Screws ### [Wing Thumb Screw Butterfly Head Hand Screw Custom Length Industrial Fastener](https://engineeringhardware.com/product/wing-thumb-screw-butterfly-head-hand-screw-custom-length-industrial-fastener/) Other Machining Services · DIN **US$0.24 – 0.26**MOQ 5,000 pieces **US$0.054 – 0.42**MOQ 2,000 piecesGet a 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