The M012 M3x4 Cup-Head Screw<\/strong> is a precision replacement fastener designed for GK9 portable bag closer machines<\/strong><\/a>. This compact M3 metric screw secures critical components such as the thread cutter blade<\/strong>, internal drive blocks<\/strong>, and linkage assemblies<\/strong>, helping maintain accurate machine timing and dependable bag-closing performance.<\/p>\n Despite its small size, the M012 screw plays an essential role in preventing movement of high-wear mechanical parts caused by continuous vibration. Replacing a worn or missing screw helps keep the cutter assembly and internal linkage system securely fastened for smooth operation and consistent thread trimming.<\/p>\n Important:<\/strong> This is an M3 \u00d7 4mm cup-head screw<\/strong>. Please verify the M012 part number<\/strong>, thread size, and your machine’s parts diagram before purchasing.<\/p>\n<\/blockquote>\n Small precision fasteners are often overlooked during maintenance, but they are critical to the safe operation of a portable bag closer. The M012 screw is manufactured for locations where limited space requires a compact cup-head design without compromising secure fastening.<\/p>\n Benefits include:<\/p>\n The M012 Cup-Head Screw is compatible with portable bag closer machines built on the standard GK9 mechanical platform, including:<\/p>\n It is also suitable for many compatible handheld bag stitching machines from:<\/p>\n Always compare your existing screw and machine parts diagram before ordering.<\/p>\n The M012 screw is used in several important mechanical assemblies throughout the machine.<\/p>\n Secures the cutter blade firmly to the cutter arm block, allowing reliable automatic thread trimming after each stitched bag.<\/p>\n Used for fastening accessory brackets or internal wiring guides located around the motor housing framework where applicable.<\/p>\n Acts as a retaining fastener that helps maintain the position of alignment pins within the primary drive linkage system for smooth mechanical movement.<\/p>\n Although the M012 screw does not contact the packaging material directly, it contributes to smooth cutter operation and stable internal timing when closing:<\/p>\n A properly secured cutter and linkage assembly helps reduce downtime and supports consistent stitching performance.<\/p>\n The M012 is an M3 \u00d7 4mm precision metric cup-head screw<\/strong> specifically designed for selected GK9 portable bag closer assemblies.<\/p>\n It is commonly used in the A051 Driving Thread Cutter Blade<\/strong>, A066 Motor Armature with Bearing Assembly<\/strong>, and A067 L Rod Gutka Connection Block<\/strong>.<\/p>\n It fits most machines built on the standard GK9 platform. Always verify your machine model and compare the original part before purchasing.<\/p>\n Using a screw with a different head style or length may interfere with moving components. Replace it only with the correct M3\u00d74 cup-head specification<\/strong>.<\/p>\n Yes. A securely mounted cutter assembly helps maintain proper blade positioning, contributing to cleaner and more consistent automatic thread cutting.<\/p>\n No. This listing includes one M012 M3\u00d74 Cup-Head Screw only<\/strong>.<\/p>","protected":false},"excerpt":{"rendered":" The M012 M3x4 Cup-Head Screw is a precision replacement fastener for GK9 portable bag closer machines. It securely retains thread cutter blades, linkage blocks, and internal assemblies to help maintain reliable cutting performance and smooth machine operation.<\/p>","protected":false},"featured_media":15060,"template":"","meta":[],"product_brand":[1308],"product_cat":[1097,1714],"product_tag":[1537,2006,2007,1519,1652,1532,1634,2008,2004,2005,2012,2010,2011,2000,2009],"class_list":["post-15055","product","type-product","status-publish","has-post-thumbnail","product_brand-magneto","product_cat-bag-stitching-machine-spares","product_cat-bagclosing-machine-spares","product_tag-bag-stitching-machine-parts","product_tag-cup-head-screw","product_tag-cutter-blade-screw","product_tag-gk9-bag-closer-parts","product_tag-gk9-repair-parts","product_tag-gk9-spare-parts","product_tag-industrial-bag-closer-spare","product_tag-linkage-retaining-screw","product_tag-m012-screw","product_tag-m3x4-screw","product_tag-metric-machine-screw","product_tag-motor-armature-screw","product_tag-packaging-machine-fastener","product_tag-portable-bag-closer-screw","product_tag-thread-cutter-hardware","first","instock","sale","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\n\n
\nWhy Choose the M012 Cup-Head Screw?<\/h2>\n
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\nKey Features<\/h2>\n
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\nMachine Compatibility<\/h2>\n
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\nCommon Assembly Applications<\/h2>\n
A051 Driving Thread Cutter Blade<\/a><\/h3>\n
A066 Motor Armature with Bearing Assembly<\/a><\/h3>\n
A067 L Rod Gutka Connection Block<\/a><\/h3>\n
\nSupports Reliable Bag Closing Performance<\/h2>\n
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\nInstallation Guide<\/h2>\n
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\nMachine Compatibility Table<\/h2>\n
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\n \nMachine Model<\/th>\n Compatible<\/th>\n<\/tr>\n<\/thead>\n \n GK9-2<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-8<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-18<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-18A<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-200<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-350<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-500<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-900<\/td>\n Yes<\/td>\n<\/tr>\n \n GK9-1001<\/td>\n Yes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\nFrequently Asked Questions<\/h2>\n
What is the size of the M012 screw?<\/h3>\n
Where is this screw commonly installed?<\/h3>\n
Will this fit every GK9 portable bag closer?<\/h3>\n
Can I replace it with a standard M3 screw?<\/h3>\n
Does this screw improve thread cutting?<\/h3>\n
Is this a complete cutter assembly?<\/h3>\n