ASTM A449 Type 1 Hex Bolt 5/16 × 2-1/2 in – UNC 18 TPI – Hot Dip Galvanized Manufacturer: TTBOLT SKU: TTB-A449-1-0313X250-UNC-HDG Add to compare list Email a friend Material standard: ASTM A449-14(2020) Geometry: ASME B18.2.1-2012 (R2021) Thread: ASME B1.1-2024 UNC Class 2A Product Type: Hex Bolt Diameter: 5/16 Length: 2-1/2 in Type: 1 Material: Carbon/Alloy Steel Finish: Hot Dip Galvanized This Hex Bolt is manufactured and supplied by TTBolt in accordance with ASTM A449.This exact catalog variant has size 5/16 × 2-1/2 in, thread UNC 18 TPI, material Carbon/Alloy Steel, grade 1 and finish Hot Dip Galvanized. It is intended for mechanically fastened joints that require the stated dimensions, thread, grade and finish.Technical data for this exact variantStandardASTM A449Product typeHex BoltSize5/16 × 2-1/2 inThreadUNC 18 TPIThread directionRight HandMaterialCarbon/Alloy SteelGrade / property class1FinishHot Dip GalvanizedHead height15/64 inWidth across flats1/2 inBasic thread length7/8 inPlain shank length1-5/8 inMass per piece28.678 g/pcMass per 100 pieces2.8678 kg/100 pcSelection and ordering notesBefore ordering, confirm the required size (5/16 × 2-1/2 in), thread (UNC 18 TPI), grade (1) and finish (Hot Dip Galvanized). Price calculations may use the theoretical mass shown above; final manufactured mass can vary with dimensional tolerances, chamfers, radii, coating thickness and production process. Technical drawing & data Download technical PDF Technical data sheet TTBoltIndustrial Fasteners Engineering Data Sheet DocumentTechnical Data Sheet StandardASTMA449 Grade1 Issued2026-10-05 فارسی English پیچ شش‌گوش ASTM A449 تیپ 1 سایز 5/16 × 2-1/2 اینچ UNC 18 TPI گالوانیزه گرم 5/16 x 2.5 in | 1 | پوشش Hot Dip Galvanized جدول ابعادی پارامترنماد حداقلحداکثر / اسمی واحد قطر اسمیd-0.3125in گام رزوهn-18TPI عرض آچارخورs-0.5in ارتفاع سرk-0.235in طولl-2.5in مشخصات محصول رزوه5/16 18 TPI UNC جهت رزوهراست‌گرد گرید1 پوششHot Dip Galvanized متریالCarbon/Alloy Steel فرم رزوهUnified 60 deg یادداشت‌های فنی 1. تمام ابعاد بر حسب اینچ هستند مگر آنکه خلاف آن ذکر شده باشد. 2. تصاویر محصول از مدل Master در SolidWorks و با همان پارامترهای این ردیف تولید می‌شوند. 3. مقادیر حداقل و حداکثر از جدول ابعادی ASTMA449 گرفته شده‌اند؛ جایی که استاندارد تلرانس تعریف نکرده، تنها مقدار اسمی درج شده است. 4. وزن‌های درج‌شده در فروشگاه نظری‌اند و برای برآورد قیمت کاربرد دارند. شماره قطعهTTB-A449-1-0313X250-UNC-HDG Hex Bolt - ASTMA449 5/16 x 2.5 in | 1 | Hot Dip Galvanized Finish DIMENSION TABLE ParameterSymbol MinMax / Nominal Unit Nominal diameterd-0.3125in Threads per inchn-18TPI Width across flatss-0.5in Head heightk-0.235in Lengthl-2.5in PRODUCT DATA Thread5/16 18 TPI UNC Thread directionRight hand Grade1 FinishHot Dip Galvanized MaterialCarbon/Alloy Steel Thread formUnified 60 deg TECHNICAL NOTES 1. All dimensions are in inches unless stated otherwise. 2. Product views are generated from the SolidWorks master using the parameters of this row. 3. Minimum and maximum values are taken from the ASTMA449 dimension table; where the standard defines no tolerance, only the nominal value is shown. 4. Catalog weights are theoretical and intended for price estimation. Part numberTTB-A449-1-0313X250-UNC-HDG Products specifications Attribute name Attribute value Material Specification ASTM A449-14(2020) Geometry Reference ASME B18.2.1-2012 (R2021) Thread Reference ASME B1.1-2024 Standard ASTM A449 Product Type Hex Bolt Head Style Hex Head Thread Class 2A before coating where applicable Material Carbon/Alloy Steel Type Type 1 Finish Hot Dip Galvanized Minimum Tensile Strength 120 ksi minimum Estimated Weight 28.678 g/pc Thread Thread Type UNC Thread Pitch 18 TPI Dimensions Diameter 5/16 Length 2-1/2 in
