Transcription of External & Internal Thread Dimensions for UNF Screw Thread ...
1 External Thread Dimensions for Unified UNF Screw Threads Diameter Threads Thread Major Diameter Pitch Diameter Minor Diameter Stress Per Fit Class ( ) ( ) ( ) Area Inch Max Min Max Min Max in . (TPI). No 0 80 2A No 1 72 2A No 2 64 2A No 3 56 2A No 4 48 2A No 5 44 2A No 6 40 2A No 8 36 2A No 10 32 2A No 12 28 2A 1/4 28 2A 5/16 24 2A 3/8 24 2A 7/16 20 2A 1/2 20 2A 9/16 18 2A 5/8 18 2A 05828 3/4 16 2A 7/8 14 2A 1 12 2A 12 2A 12 2A 12 2A 12 2A Internal Thread Dimensions for Unified UNF Screw Threads Diameter Threads Thread Major Diameter Pitch Diameter Minor Diameter Stress Per Fit Class Area Inch Min Max Min Max Min in.
2 (TPI). No 0 80 2B No 1 72 2B No 2 64 2B No 3 56 2B No 4 48 2B No 5 44 2B No 6 40 2B No 8 36 2B No 10 32 2B No 12 28 2B 1/4 28 2B 5/16 24 2B 3/8 24 2B 7/16 20 2B 1/2 20 2B 9/16 18 2B 5/8 18 2B 3/4 16 2B 7/8 14 2B 1 12 2B 12 2B 12 2B 12 2B 12 2B
