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{"id":7800204787773,"title":"ISC In-Line Shortening Clutch","handle":"isc-in-line-shortening-clutch","description":"\u003ch2 data-start=\"171\" data-end=\"215\"\u003eISC In-Line Shortening Clutch – Grade 100\u003c\/h2\u003e\n\u003cp data-start=\"217\" data-end=\"614\"\u003eThe \u003cstrong data-start=\"221\" data-end=\"254\"\u003eISC In-Line Shortening Clutch\u003c\/strong\u003e is a precision-engineered Grade 100 rigging component designed to \u003cstrong data-start=\"321\" data-end=\"367\"\u003eadjust chain length safely and efficiently\u003c\/strong\u003e in lifting and load-binding applications. This in-line device allows for \u003cstrong data-start=\"441\" data-end=\"481\"\u003equick chain shortening or tensioning\u003c\/strong\u003e without disconnecting the sling or assembly, making it ideal for construction, material handling, and industrial rigging operations.\u003c\/p\u003e\n\u003cp data-start=\"616\" data-end=\"812\"\u003eBuilt from \u003cstrong data-start=\"627\" data-end=\"642\"\u003ealloy steel\u003c\/strong\u003e and rated for heavy-duty loads, the ISC Clutch provides a secure and reliable solution for on-the-fly chain adjustments while maintaining full Working Load Limits (WLL).\u003c\/p\u003e\n\u003chr data-start=\"814\" data-end=\"817\"\u003e\n\u003ch3 data-start=\"819\" data-end=\"854\"\u003eSize \u0026amp; Working Load Limit (WLL)\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"856\" data-end=\"979\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"856\" data-end=\"882\"\u003e\n\u003ctr data-start=\"856\" data-end=\"882\"\u003e\n\u003cth data-start=\"856\" data-end=\"869\" data-col-size=\"sm\"\u003eTrade Size\u003c\/th\u003e\n\u003cth data-start=\"869\" data-end=\"882\" data-col-size=\"sm\"\u003eWLL (lbs)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"909\" data-end=\"979\"\u003e\n\u003ctr data-start=\"909\" data-end=\"926\"\u003e\n\u003ctd data-start=\"909\" data-end=\"917\" data-col-size=\"sm\"\u003e5\/16\"\u003c\/td\u003e\n\u003ctd data-start=\"917\" data-end=\"926\" data-col-size=\"sm\"\u003e5,700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"927\" data-end=\"943\"\u003e\n\u003ctd data-start=\"927\" data-end=\"934\" data-col-size=\"sm\"\u003e3\/8\"\u003c\/td\u003e\n\u003ctd data-start=\"934\" data-end=\"943\" data-col-size=\"sm\"\u003e8,800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"944\" data-end=\"961\"\u003e\n\u003ctd data-start=\"944\" data-end=\"951\" data-col-size=\"sm\"\u003e1\/2\"\u003c\/td\u003e\n\u003ctd data-start=\"951\" data-end=\"961\" data-col-size=\"sm\"\u003e15,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"962\" data-end=\"979\"\u003e\n\u003ctd data-start=\"962\" data-end=\"969\" data-col-size=\"sm\"\u003e5\/8\"\u003c\/td\u003e\n\u003ctd data-start=\"969\" data-end=\"979\" data-col-size=\"sm\"\u003e22,600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"981\" data-end=\"984\"\u003e\n\u003ch3 data-start=\"986\" data-end=\"1002\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1003\" data-end=\"1342\"\u003e\n\u003cli data-start=\"1003\" data-end=\"1078\"\u003e\n\u003cp data-start=\"1005\" data-end=\"1078\"\u003e\u003cstrong data-start=\"1005\" data-end=\"1043\"\u003eGrade 100 alloy steel construction\u003c\/strong\u003e for high strength and durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1079\" data-end=\"1155\"\u003e\n\u003cp data-start=\"1081\" data-end=\"1155\"\u003eAllows \u003cstrong data-start=\"1088\" data-end=\"1122\"\u003equick in-line chain shortening\u003c\/strong\u003e without disconnecting the load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1156\" data-end=\"1212\"\u003e\n\u003cp data-start=\"1158\" data-end=\"1212\"\u003eMaintains full Working Load Limit (WLL) when engaged\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1213\" data-end=\"1281\"\u003e\n\u003cp data-start=\"1215\" data-end=\"1281\"\u003eIdeal for \u003cstrong data-start=\"1225\" data-end=\"1279\"\u003erigging, lifting, and load adjustment applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1282\" data-end=\"1342\"\u003e\n\u003cp data-start=\"1284\" data-end=\"1342\"\u003eClearly marked with size and WLL for easy identification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1344\" data-end=\"1459\"\u003e⚠️ \u003cstrong data-start=\"1347\" data-end=\"1359\"\u003eWarning:\u003c\/strong\u003e Do not exceed the stated Working Load Limit. Inspect before each use to ensure proper engagement.\u003c\/p\u003e","published_at":"2026-02-02T11:49:59-06:00","created_at":"2026-02-02T09:01:53-06:00","vendor":"AMH","type":"Chain Accessories","tags":["Alloy hook","Chain connector","Chain hardware","Chain hook","Chain link","Chain sling","Clevis hook","Clutch hook","Eye hook","Grab hook","Hook latch","Industrial hook","Lifting gear","Lifting hook","Load hook","Rigging gear","Rigging hook","Self-locking hook","Shortening device","Swivel hook"],"price":4200,"price_min":4200,"price_max":18700,"available":true,"price_varies":true,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":42972255223869,"title":"5\/16\"","option1":"5\/16\"","option2":null,"option3":null,"sku":"10ISC08","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ISC In-Line Shortening Clutch - 5\/16\"","public_title":"5\/16\"","options":["5\/16\""],"price":4200,"weight":0,"compare_at_price":null,"inventory_quantity":80,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":42972255256637,"title":"3\/8\"","option1":"3\/8\"","option2":null,"option3":null,"sku":"10ISC10","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ISC In-Line Shortening Clutch - 3\/8\"","public_title":"3\/8\"","options":["3\/8\""],"price":6400,"weight":0,"compare_at_price":null,"inventory_quantity":80,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":42972255289405,"title":"1\/2\"","option1":"1\/2\"","option2":null,"option3":null,"sku":"10ISC13","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ISC In-Line Shortening Clutch - 1\/2\"","public_title":"1\/2\"","options":["1\/2\""],"price":11700,"weight":0,"compare_at_price":null,"inventory_quantity":80,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":42972255322173,"title":"5\/8\"","option1":"5\/8\"","option2":null,"option3":null,"sku":"10ISC16","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"ISC In-Line Shortening Clutch - 5\/8\"","public_title":"5\/8\"","options":["5\/8\""],"price":18700,"weight":0,"compare_at_price":null,"inventory_quantity":80,"inventory_management":"shopify","inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/besttoolsusa.com\/cdn\/shop\/files\/10ISC.png?v=1770045079"],"featured_image":"\/\/besttoolsusa.com\/cdn\/shop\/files\/10ISC.png?v=1770045079","options":["Size"],"media":[{"alt":"ISC In-Line Shortening Clutch - besttoolsusa - AMH - Chain Accessories","id":27044379721789,"position":1,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/besttoolsusa.com\/cdn\/shop\/files\/10ISC.png?v=1770045079"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/besttoolsusa.com\/cdn\/shop\/files\/10ISC.png?v=1770045079","width":600}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch2 data-start=\"171\" data-end=\"215\"\u003eISC In-Line Shortening Clutch – Grade 100\u003c\/h2\u003e\n\u003cp data-start=\"217\" data-end=\"614\"\u003eThe \u003cstrong data-start=\"221\" data-end=\"254\"\u003eISC In-Line Shortening Clutch\u003c\/strong\u003e is a precision-engineered Grade 100 rigging component designed to \u003cstrong data-start=\"321\" data-end=\"367\"\u003eadjust chain length safely and efficiently\u003c\/strong\u003e in lifting and load-binding applications. This in-line device allows for \u003cstrong data-start=\"441\" data-end=\"481\"\u003equick chain shortening or tensioning\u003c\/strong\u003e without disconnecting the sling or assembly, making it ideal for construction, material handling, and industrial rigging operations.\u003c\/p\u003e\n\u003cp data-start=\"616\" data-end=\"812\"\u003eBuilt from \u003cstrong data-start=\"627\" data-end=\"642\"\u003ealloy steel\u003c\/strong\u003e and rated for heavy-duty loads, the ISC Clutch provides a secure and reliable solution for on-the-fly chain adjustments while maintaining full Working Load Limits (WLL).\u003c\/p\u003e\n\u003chr data-start=\"814\" data-end=\"817\"\u003e\n\u003ch3 data-start=\"819\" data-end=\"854\"\u003eSize \u0026amp; Working Load Limit (WLL)\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"856\" data-end=\"979\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"856\" data-end=\"882\"\u003e\n\u003ctr data-start=\"856\" data-end=\"882\"\u003e\n\u003cth data-start=\"856\" data-end=\"869\" data-col-size=\"sm\"\u003eTrade Size\u003c\/th\u003e\n\u003cth data-start=\"869\" data-end=\"882\" data-col-size=\"sm\"\u003eWLL (lbs)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"909\" data-end=\"979\"\u003e\n\u003ctr data-start=\"909\" data-end=\"926\"\u003e\n\u003ctd data-start=\"909\" data-end=\"917\" data-col-size=\"sm\"\u003e5\/16\"\u003c\/td\u003e\n\u003ctd data-start=\"917\" data-end=\"926\" data-col-size=\"sm\"\u003e5,700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"927\" data-end=\"943\"\u003e\n\u003ctd data-start=\"927\" data-end=\"934\" data-col-size=\"sm\"\u003e3\/8\"\u003c\/td\u003e\n\u003ctd data-start=\"934\" data-end=\"943\" data-col-size=\"sm\"\u003e8,800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"944\" data-end=\"961\"\u003e\n\u003ctd data-start=\"944\" data-end=\"951\" data-col-size=\"sm\"\u003e1\/2\"\u003c\/td\u003e\n\u003ctd data-start=\"951\" data-end=\"961\" data-col-size=\"sm\"\u003e15,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"962\" data-end=\"979\"\u003e\n\u003ctd data-start=\"962\" data-end=\"969\" data-col-size=\"sm\"\u003e5\/8\"\u003c\/td\u003e\n\u003ctd data-start=\"969\" data-end=\"979\" data-col-size=\"sm\"\u003e22,600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"981\" data-end=\"984\"\u003e\n\u003ch3 data-start=\"986\" data-end=\"1002\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1003\" data-end=\"1342\"\u003e\n\u003cli data-start=\"1003\" data-end=\"1078\"\u003e\n\u003cp data-start=\"1005\" data-end=\"1078\"\u003e\u003cstrong data-start=\"1005\" data-end=\"1043\"\u003eGrade 100 alloy steel construction\u003c\/strong\u003e for high strength and durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1079\" data-end=\"1155\"\u003e\n\u003cp data-start=\"1081\" data-end=\"1155\"\u003eAllows \u003cstrong data-start=\"1088\" data-end=\"1122\"\u003equick in-line chain shortening\u003c\/strong\u003e without disconnecting the load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1156\" data-end=\"1212\"\u003e\n\u003cp data-start=\"1158\" data-end=\"1212\"\u003eMaintains full Working Load Limit (WLL) when engaged\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1213\" data-end=\"1281\"\u003e\n\u003cp data-start=\"1215\" data-end=\"1281\"\u003eIdeal for \u003cstrong data-start=\"1225\" data-end=\"1279\"\u003erigging, lifting, and load adjustment applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1282\" data-end=\"1342\"\u003e\n\u003cp data-start=\"1284\" data-end=\"1342\"\u003eClearly marked with size and WLL for easy identification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1344\" data-end=\"1459\"\u003e⚠️ \u003cstrong data-start=\"1347\" data-end=\"1359\"\u003eWarning:\u003c\/strong\u003e Do not exceed the stated Working Load Limit. Inspect before each use to ensure proper engagement.\u003c\/p\u003e"}

ISC In-Line Shortening Clutch

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$42.00
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Product Description
Sku: 10ISC08

ISC In-Line Shortening Clutch – Grade 100

The ISC In-Line Shortening Clutch is a precision-engineered Grade 100 rigging component designed to adjust chain length safely and efficiently in lifting and load-binding applications. This in-line device allows for quick chain shortening or tensioning without disconnecting the sling or assembly, making it ideal for construction, material handling, and industrial rigging operations.

Built from alloy steel and rated for heavy-duty loads, the ISC Clutch provides a secure and reliable solution for on-the-fly chain adjustments while maintaining full Working Load Limits (WLL).


Size & Working Load Limit (WLL)

Trade Size WLL (lbs)
5/16" 5,700
3/8" 8,800
1/2" 15,000
5/8" 22,600

Key Features

  • Grade 100 alloy steel construction for high strength and durability

  • Allows quick in-line chain shortening without disconnecting the load

  • Maintains full Working Load Limit (WLL) when engaged

  • Ideal for rigging, lifting, and load adjustment applications

  • Clearly marked with size and WLL for easy identification

⚠️ Warning: Do not exceed the stated Working Load Limit. Inspect before each use to ensure proper engagement.


Best Tools Inc. is a third-generation, family-owned company built on real-world experience. Not theory. Not trends. What’s best in the field. Lockout Tools isn’t a side product—it’s where we come from. Since the 1980s, we’ve been building lockout tools with a focus on what’s best in the field, and that foundation still drives how we do things today.

Over the years, we’ve worked alongside professionals across multiple industries—towing, construction, trucking, transport, arborists, and more—helping develop and refine equipment to make the job easier and more efficient.

Today, our lineup includes lockout tools, rigging, towing accessories, truck and transport equipment, and emergency lighting—everything built to our standards and backed by our name.

We keep it simple. If it doesn’t hold up in the field, it doesn’t belong in our lineup. No gimmicks. No shortcuts. Just tools that deliver, job after job.

When people rely on you, you can depend on us.

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Gravette, AR 72736

Phone: 1-800-541-8568 or 1-479-787-1065

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