{"product_id":"value-collection-tcb31000350-tension-control-bolt-a325","title":"Value Collection TCB31000350 Tension Control Bolt A325","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION TCB31000350 is a structural tension control bolt engineered for high-strength steel-to-steel connections in commercial and industrial construction. This fastener features a 1-8 UNC thread size and a 3.5-inch length under head, with a 1.875-inch head diameter. Manufactured from A325 steel with a bright uncoated finish, it meets ASTM A325 and ASTM F1852 standards. Each unit ships as a complete assembly including a compatible nut and washer, allowing installation crews to proceed without sourcing additional hardware. Structural ironworkers and steel erectors are the primary installers of this fastener type.\u003c\/p\u003e\u003cp\u003eThis bolt is suited for structural steel connections in commercial buildings, bridges, and heavy industrial frameworks where AISC and RCSC specifications require pretensioned or snug-tight high-strength fastener assemblies. The tension control design uses a splined end that shears off at the correct installation torque, providing a visual confirmation of proper preload without requiring a torque wrench or turn-of-nut inspection. The package quantity is 5 bolts per pack, with a minimum order quantity of 1 pack.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eA325 steel construction meets ASTM A325 and ASTM F1852 fastener standards\u003c\/li\u003e\n\u003cli\u003e1-8 UNC thread for compatibility with standard structural bolt patterns\u003c\/li\u003e\n\u003cli\u003e3.5-inch length under head with 1.875-inch head diameter\u003c\/li\u003e\n\u003cli\u003eSplined tension control design provides visual shear-off confirmation of correct preload\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for painted or coated structural assemblies\u003c\/li\u003e\n\u003cli\u003eIncludes nut and washer for a complete installation-ready assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style structural fastener for high-strength steel connection applications requiring ASTM A325 or ASTM F1852 compliant tension control bolt assemblies in 1-8 UNC thread configurations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified structural ironworkers using a tension control wrench or TC gun calibrated for the fastener diameter. All connected steel plies must be brought to snug-tight contact before final pretensioning. Follow RCSC Specification for Structural Joints Using High-Strength Bolts for pretensioning procedures and inspection requirements. Do not reuse tension control bolts once the spline has sheared.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: A325\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASTM A325, ASTM F1852\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Nut, Washer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TCB31000350\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51721979789618,"sku":"TCB31000350","price":80.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5d9d0c04bc7fd3715451390cec9f9c24.jpg?v=1788584231","url":"https:\/\/voomisupply.com\/products\/value-collection-tcb31000350-tension-control-bolt-a325","provider":"Voomi Supply","version":"1.0","type":"link"}