{"product_id":"the-ground-pin-excavator-attachment-pins","title":"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eEvery attachment on a mini excavator hangs from two pieces of steel. Bucket, hammer, grapple, ripper, thumb: they all pivot on the same pair of pins, and when one wears, the machine does not fail dramatically. It develops slop, the bucket loses its angle, the operator compensates, and the whole cycle gets slower and less accurate.\u003c\/p\u003e\n\u003cp\u003eThese pins are specified as class 10.9 steel, which is the number that matters. It indicates a tensile strength in the region of 1,040 megapascals, roughly twice that of the common commercial grade used in cheap replacement parts. A pin at that hardness resists deformation under load instead of mushrooming at the head, and it holds its diameter, which is what keeps the bushing from wearing oval. The dimensions are unambiguous: 24 mm diameter, 135 mm span, 35 mm thread, 170 mm overall length, supplied as a matched pair with nuts.\u003c\/p\u003e\n\u003cp\u003eThey are aftermarket replacement parts, and that is stated plainly rather than dressed up. What is not compromised is the specification, because a pin that fits but does not hold hardness is worse than no spare at all. Two pins in a box is the correct quantity: an attachment change takes both.\u003c\/p\u003e\n\u003cp style=\"font-style:italic;margin-top:16px;\"\u003eDowntime is rarely caused by the expensive component. It is caused by the two-dollar pin nobody replaced.\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:22px 0;border:0;border-top:1px solid #eee;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eWhy It Works\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Class 10.9 steel for high tensile strength under load\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ 24 mm diameter with a 135 mm span and 35 mm thread\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ 170 mm overall length, supplied as a matched pair\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Resists head deformation and bushing ovalization\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Fits buckets, hammers, grapples, rippers and thumbs\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Suits most mini excavator attachment interfaces\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e✦ Includes nuts for immediate installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength steel\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eBolt class:\u003c\/strong\u003e 10.9\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 24 mm \/ 0.945 in\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eSpan:\u003c\/strong\u003e 135 mm \/ 5.31 in\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eThread length:\u003c\/strong\u003e 35 mm \/ 1.38 in\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eOverall length:\u003c\/strong\u003e 170 mm \/ 6.69 in\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Silver, zinc plated\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 2 pins with nuts\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mini excavator attachment pivot\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWho It Is For\u003c\/h3\u003e\n\u003cp\u003ePlant hire yards keep a pair on the shelf because a worn pin takes a machine out of service for a day it did not need to lose. Owner-operators doing driveway and footing work replace them at the first sign of slop rather than at the point of failure. Agricultural contractors running a thumb or a hammer on a compact machine use the same interface, and the two-pin pack matches the fact that both sides of an attachment wear at the same rate.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does bolt class 10.9 mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It denotes a high-strength steel with a nominal tensile strength near 1,040 MPa and a yield strength around 940 MPa, roughly double common commercial grades.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will these fit my mini excavator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They fit attachments with a 24 mm pin bore and a 135 mm span between mounting ears. Measure the existing pin before ordering, since bore diameter varies across machines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are both pins identical?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The set is a matched pair with nuts, since an attachment pivots on two points that wear together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. These are aftermarket replacement pins, specified to the dimensions and hardness class listed rather than sold as manufacturer-branded parts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know when a pin needs replacing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Visible slop at the attachment, a hammered or mushroomed head, or a step worn into the shaft all indicate replacement. A pin that no longer holds the bucket angle is already past due.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these come with nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the set includes nuts. Two pins and their fasteners ship together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can they be used with a hydraulic hammer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Where the attachment interface matches 24 mm by 135 mm, yes. Hammer duty cycles are harder on pins, so inspection intervals should be shorter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I grease after installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. Greasing the pin and bore on installation and at each service interval is what prevents the wear that led to replacement in the first place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What thread pitch does the nut use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The thread runs 35 mm along the shaft in a standard coarse metric pitch matched to the supplied nut. Fit the nut that ships with the pin rather than reusing a worn one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can these be machined to fit a different bore?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: They are hardened steel at class 10.9, so machining removes the hardened surface layer and weakens the pin. Order the correct diameter instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should pins be inspected?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: At every attachment change and at each greasing interval. Any visible step, flat spot or head deformation means replacement before the next shift.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S39530cc7406a45739e401dedfd20d8e3m.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf7bc0578112547a0baf06f8772ba81766.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S015a93407583426a81aaffc49e631ee1t.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S48879bdd9e6143f1a928bd18ee997379x.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Se6d3f54094c7430ab865a1d2c506e289Y.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S33afa0fae0e84cabbf962689cff6643az.webp?v=1781745059\" alt=\"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\" style=\"max-width:100%;margin:8px 0;border-radius:4px;\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"The Ground Pin | 24 mm Excavator Attachment Pin Set, Grade 10.9\", \"brand\": {\"@type\": \"Brand\", \"name\": \"EastSupplier\"}, \"sku\": \"9421879902431\", \"description\": \"Every attachment on a mini excavator hangs from two pieces of steel. 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