Inch series3 standards18 specification pages

1/2-13 Fasteners

All 1/2-13 screws, bolts, nuts and washers in the database. 1/2-13 has a nominal major diameter of 0.5 in, threaded 13 tpi to the UNC series, across 3 standards.

Nominal Ø0.5 in
Threads per inch13 tpi
Pitch Ø0.4500 in
Tap drill0.4232 in

1/2-13 thread dimensions

Full thread page
Designation
1/2-13 UNC
Major diameter
0.5 in
Threads per inch
13 tpi
Pitch diameter
0.4500 in
Minor diameter — external
0.4055 in
Minor diameter — internal
0.4165 in
Tap drill size
Ø 0.4232 in

1/2-13 Bolts

9 pages
ASME B18.2.1Hex Head Cap Screw — Inch Series
1/2-13 × 11/2-13 × 1.251/2-13 × 1.51/2-13 × 21/2-13 × 2.51/2-13 × 31/2-13 × 41/2-13 × 51/2-13 × 6

1/2-13 Screws

8 pages
ASME B18.3Socket Head Cap Screw — Inch Series
1/2-13 × 11/2-13 × 1.251/2-13 × 1.51/2-13 × 21/2-13 × 2.51/2-13 × 31/2-13 × 41/2-13 × 5

1/2-13 Nuts

1 pages
ASME B18.2.2Hex Nut — Inch Series
1/2-13

Browse other sizes

1-81/21/2-131/41/4-2010-243/43/4-103/83/8-164-405/165/16-185/85/8-116-327/8-98-32M10M12M14M16M18M2M2.5M20M22M24M3M3.5M4M5M6M8