ASTM A449 Type 3 Hex Bolt 1/4 × 8 in – UNC 20 TPI – Plain Manufacturer: TTBOLT SKU: TTB-A449-3-025X800-UNC-PL 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: 1/4 Length: 8 in Type: 3 Material: Weathering Steel Finish: Plain This Hex Bolt is manufactured and supplied by TTBolt in accordance with ASTM A449.This exact catalog variant has size 1/4 × 8 in, thread UNC 20 TPI, material Weathering Steel, grade 3 and finish Plain. It is intended for mechanically fastened joints that require the stated dimensions, thread, grade and finish.Technical data for this exact variantStandardASTM A449Product typeHex BoltSize1/4 × 8 inThreadUNC 20 TPIThread directionRight HandMaterialWeathering SteelGrade / property class3FinishPlainHead height3/16 inWidth across flats7/16 inBasic thread length1 inPlain shank length7 inMass per piece52.598 g/pcMass per 100 pieces5.2598 kg/100 pcSelection and ordering notesBefore ordering, confirm the required size (1/4 × 8 in), thread (UNC 20 TPI), grade (3) and finish (Plain). 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 Grade3 Issued2026-10-05 فارسی English پیچ شش‌گوش ASTM A449 تیپ 3 سایز 1/4 × 8 اینچ UNC 20 TPI بدون پوشش 1/4 x 8 in | 3 | پوشش Plain جدول ابعادی پارامترنماد حداقلحداکثر / اسمی واحد قطر اسمیd-0.25in گام رزوهn-20TPI عرض آچارخورs-0.438in ارتفاع سرk-0.188in طولl-8in مشخصات محصول رزوه1/4 20 TPI UNC جهت رزوهراست‌گرد گرید3 پوششPlain متریالWeathering 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-A449-3-025X800-UNC-PL Hex Bolt - ASTMA449 1/4 x 8 in | 3 | Plain Finish DIMENSION TABLE ParameterSymbol MinMax / Nominal Unit Nominal diameterd-0.25in Threads per inchn-20TPI Width across flatss-0.438in Head heightk-0.188in Lengthl-8in PRODUCT DATA Thread1/4 20 TPI UNC Thread directionRight hand Grade3 FinishPlain MaterialWeathering 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-A449-3-025X800-UNC-PL 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 Weathering Steel Type Type 3 Finish Plain Minimum Tensile Strength 120 ksi minimum Estimated Weight 52.598 g/pc Thread Thread Type UNC Thread Pitch 20 TPI Dimensions Diameter 1/4 Length 8 in
