ASME B18.31.2 Grade B7M Double-End Stud — Clamping Type 3 × 20 in – UNC 4 TPI – PTFE Coated Manufacturer: TTBOLT SKU: TTB-ASMEB18.31.2-B7M-300X2000-UNC-4TPI-PTFE Add to compare list Email a friend Material specification: ASTM A193/A193M Product Type: Double-End Stud — Clamping Type Diameter: 3 Length: 20 in Thread: UNC, 4 TPI Material: Alloy Steel Grade: B7M Finish: PTFE Coated Geometry reference: ASME B18.31.2 ASME B18.31.2 Grade B7M Double-End Stud — Clamping Type 3 × 20 in – UNC 4 TPI – PTFE Coated is a Double-End Stud — Clamping Type manufactured and supplied by TTBolt in accordance with ASME B18.31.2.This exact catalog variant has size 3 × 20 in, thread UNC 4 TPI, material Alloy Steel, grade B7M and finish PTFE Coated. It is intended for threaded connections where controlled engagement length, grade and finish are required.Technical data for this exact variantStandardASME B18.31.2Product typeDouble-End Stud — Clamping TypeSize3 × 20 inThreadUNC 4 TPIThread directionRight HandMaterialAlloy SteelGrade / property classB7MFinishPTFE CoatedBasic thread length7 inPlain shank length6 inMass per piece16845.056 g/pcMass per 100 pieces1684.5056 kg/100 pcSelection and ordering notesBefore ordering, confirm the required size (3 × 20 in), thread (UNC 4 TPI), grade (B7M) and finish (PTFE Coated). 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 StandardASMEB18.31.2 GradeB7M Issued2026-10-04 فارسی English استادبولت دوسر رزوه — نوع کلمپینگ ASME B18.31.2 گرید B7M سایز 3 × 20 اینچ، رزوه UNC 4 TPI، پوشش PTFE 3 x 20 in | B7M | پوشش PTFE Coated جدول ابعادی پارامترنماد حداقلحداکثر / اسمی واحد قطر اسمیd-3in گام رزوهn-4TPI قطر بدنهds2.9733in طولl-20in مشخصات محصول رزوه3 4 TPI UNC جهت رزوهراست‌گرد گریدB7M پوششPTFE Coated متریالAlloy 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 ASMEB18.31.2 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-ASMEB18.31.2-B7M-300X2000-UNC-4TPI-PTFE Double-End Stud — Clamping Type - ASMEB18.31.2 3 x 20 in | B7M | PTFE Coated Finish DIMENSION TABLE ParameterSymbol MinMax / Nominal Unit Nominal diameterd-3in Threads per inchn-4TPI Body diameterds2.9733in Lengthl-20in PRODUCT DATA Thread3 4 TPI UNC Thread directionRight hand GradeB7M FinishPTFE Coated MaterialAlloy 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 ASMEB18.31.2 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-ASMEB18.31.2-B7M-300X2000-UNC-4TPI-PTFE Products specifications Attribute name Attribute value Standard ASME B18.31.2 Material Specification ASTM A193/A193M-26 Common Requirements ASTM A962/A962M Geometry Reference ASME B18.31.2 Product Type Double-End Stud — Clamping Type Material Alloy Steel Property Class B7M Finish PTFE Coated Property Class / Grade B7M Unit System in Market Status Common Estimated Weight 16845.056 g/pc Thread Thread Type UNC Thread Pitch 4 TPI Thread Direction Right Hand Dimensions Diameter 3 Length 20 in
