Transcription of DESCRIPTION PAGE - Sigma Fasteners
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DESCRIPTION PAGE. Unified Inch screw Threads 15-1 to 15-5. ASTM & SAE Grade Markings for Steel Bolts & Screws 15-6. Platings & Coatings for Fasteners 15-7 to 15-8. Hex Cap Screws SAE J429 15-9 to 15-11. Steel Bar Weights 15-12. Weight Multiplier for Various Materials 15-13. Material Selection Chart 15-14. Sigma Fasteners , Inc. Section 15. UNIFIED INCH screw THREADS-Page 1 of 5. Nominal Series1 External4 Internal4. Size & Desig- Major Pitch UN2 UNR Class Minor Pitch Major Threads In. nation Diameter Diameter Minor Minor Diameter Diameter Diameter 3 5 3. Class Allow- Max Min Min Max Min Toler- Diam Diam Min Max Min Max Toler- Min ance ance Max Max ance (Ref (Ref). 0-80 or 2A --- 2B UNF. 3A --- 3B or 2A --- 2B UNC. 3A --- 3B 1-72 or 2A --- 2B UNF.)
DESCRIPTION PAGE - Sigma Fasteners ... Screw
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American National, Unified Screw Threads, Thread Standards and Definitions, Unified, Screw, Standard Series Limits of, INCH THREAD WITH A STANDARD UNF, STANDARD BOLT & SCREW SIZES, Software for Calculation of Screw Threads, Cutting, JIS (Japanese Industrial Standard) Screw Thread, T-HEAD BOLTS AND NUTS