Fastener Data Sheets& CAD
Browse ISO, DIN, ASTM and ASME fastener standards with dimensional specifications, CAD blueprints, drilling & clearance data, chemical composition and mechanical properties.
Fastener Catalog & Standard Specification
Active: ASTM A193 Grade B16 / ASME B16.5 (Stud Bolt (B16 High-Temperature))
All-Thread Stud Bolts — B16 (Cr-Mo-V) with Heavy Hex Nuts
Continuous all-thread stud bolt in chromium-molybdenum-vanadium (Cr-Mo-V) alloy steel. The vanadium addition and a minimum 650°C temper produce stable V4C3 carbides, giving markedly better creep resistance than Grade B7 in sustained high-temperature service.
CAD Schematic
Nominal blueprint for 7/8"
- • Mechanical minima (metric): 860 MPa tensile / 725 MPa yield to M64; 760/655 above M64 to M100; 690/585 above M100 to M180. Hardness capped at 321 HBW / 35 HRC.
- • Heat treatment: austenitize 925-955 degC, oil quench (water quench prohibited), temper at minimum 650 degC (1200 degF).
- • Recommended mating hardware: ASTM A194 Grade 16 heavy hex nuts with ASTM F436 Type 1 hardened washers.
- • Do NOT zinc plate or hot-dip galvanize: zinc diffuses into grain boundaries above ~200 degC causing liquid metal embrittlement. Use black oxide, PTFE or Xylar/ceramic coatings.
- • Service temperature is variously published as 450 degC (840 degF) to 593 degC (1100 degF); confirm the exact limit against the project specification.
- • International equivalents: UNS K14072, JIS G4107 SNB16, DIN 17240 40CrMoV47, EN 10269 40CrMoV4-6.
Size Specification Inspector
7/8"Select diameter & order quantity
Single unit weight (steel): 0.1431 kg
Chemical Composition & Metallurgy
Elemental mass percentages, grain structure & mechanical properties
- • Chromium-molybdenum AISI 4140 alloy steel, liquid quenched and tempered at minimum 593°C (1100°F).
- • For sour gas / H2S service, Grade B7M (max 99 HRB / 22 HRC, 100% hardness inspected) is mandatory per NACE MR0175.
- • Paired with ASTM A194 Grade 2H heavy hex nuts.
Dimensional Specification
Thread / Pitch / Across Flats / Corners / Height / Drill / Clearance / Stress Area (mm)
| Thread (d) | Pitch | A/F (s) | Corners (e) | Height | Tap Drill | Clear H13 | Stress Area | |
|---|---|---|---|---|---|---|---|---|
| 1/2" | 13 TPI | 22.2 | 25.4 | 0 | 10.8 | 14.3 | 91.5 | |
| 5/8" | 11 TPI | 27 | 31 | 0 | 13.6 | 17.5 | 146 | |
| 3/4" | 10 TPI | 31.8 | 36.5 | 0 | 16.5 | 20.6 | 216 | |
| 7/8" | 9 TPI | 36.5 | 42 | 0 | 19.5 | 23.8 | 298 | |
| 1" | 8 TPI | 41.3 | 47.5 | 0 | 22.2 | 27 | 391 | |
| 1-1/8" | 8-UN | 46 | 53 | 0 | 25.4 | 30.2 | 510 | |
| 1-1/4" | 8-UN | 50.8 | 58.5 | 0 | 28.6 | 33.3 | 645 | |
| 1-3/8" | 8-UN | 55.6 | 64 | 0 | 31.8 | 36.5 | 792 | |
| 1-1/2" | 8-UN | 60.3 | 69.5 | 0 | 34.9 | 39.7 | 955 | |
| 1-5/8" | 8-UN | 65 | 75 | 0 | 38.1 | 42.9 | 1135 | |
| 1-3/4" | 8-UN | 69.8 | 80.5 | 0 | 41.3 | 46 | 1330 | |
| 1-7/8" | 8-UN | 74.6 | 86 | 0 | 44.5 | 49.2 | 1545 | |
| 2" | 8-UN | 79.4 | 91.5 | 0 | 47.6 | 52.4 | 1770 | |
| 2-1/4" | 8-UN | 88.9 | 102.5 | 0 | 54 | 59 | 2280 | |
| 2-1/2" | 8-UN | 98.4 | 113.5 | 0 | 60.3 | 65.5 | 2860 | |
| 2-3/4" | 8-UN | 108 | 124.5 | 0 | 66.7 | 72 | 3500 | |
| 3" | 8-UN | 117.5 | 135.5 | 0 | 73 | 78.5 | 4210 |