Basic dimensions
to help identify collets,
I will add to the list as
I find data...

| Hardinge Collet No. | Standard Collet | Maximum Capacity in Inches | Major Dimensions in Inches | ||||
| Round | Square | Hexagon | Body A | Thread B | Length C | ||
| 3AM 1AM 3AT 2B 2AB 3B 1C 3C 4C 5C 115 215 2H 3H 6H 8H 2L 6L 1K 10L 3PN 4PN 5PN 5P 7P l0P 2VB 3NS 40S 4NS 5NS 4C 2S 3S 1J 2J 3J 5SC 52SC IA 2A 32S 4S 42S 5V 20V 8WN |
Ames 5/8
Inch Cap. Ames 1 Inch Cap. Atlas Becker No. 2 Becker No. 2A Becker No. 3 Cataract No. 1 Cataract No. 3 Cataract No. 4 Cataract No. 5 Cushman No. 115 Cushman No. 215 Hendey No. 2 Hendey No. 3 Hendey No. 6 Hendey No. 8 LeBlond No. 2 LeBlond No. 6 Kearney & Trecker LeBlond No. 10 Pratt & Whitney #3NS Pratt & Whitney # 4 Pratt & Whitney # 5 Pratt & Whitney # 5 Pratt & Whitney # 7 Pratt & Whitney # 10 Reed Prentice # 2V Rivett No. 3NS Rivett No. 40S Rivett No. 4NS Rivett No. 5NS Rockwell 10" Seneca No. 2 Seneca No. 3 Sjogren No. 1 Sjogren No. 2 Sjogren No. 3 Sloan & Chace # 5 Sloan & Chace # 5-1/2 South Bend No. 1A South Bend No. 2A Stark No. 3-1/2 Stark No. 4 Stark No. 4-1/2 Van Norman No. 5 Van Norman No. 112 Wade American # 8 |
5/8 1 1/2 1/2 9/16 3/4 1/4 1/2 3/4 1-1/16 1-1/8 1-3/4 5/8 7/8 1-1/8 1-1/4 3/4 1 1 1-1/4 1/2 3/4 1 5/8 7/8 1-1/4 1/2 1/2 1/2 5/8 7/8 3/4 9/16 3/4 1 1-3/8 1-3/4 3/8 5/8 1/2 11/16 1/2 3/4 1 5/8 1 1 |
7/16 23/32 11/32 11/32 25/64 17/32 11/64 11/32 17/32 3/4 51/64 1-7/32 7/16 5/8 51/64 7/8 17/32 23/32 23/32 7/8 11/32 17/32 23/32 7/16 5/8 7/8 11/32 11/32 11/32 7/16 5/8 17/32 25/64 17/32 3/4 31/32 1-7/32 17/64 7/16 11/32 15/32 11/32 17/32 23/32 7/16 23/32 32/32 |
17/32 7/8 7/16 7/16 31/64 21/32 7/32 7/16 21/32 29/32 31/32 1-1/2 17/32 3/4 31/32 1-1/16 21/32 7/8 7/8 1-1/16 7/16 21/32 7/8 17/32 3/4 1-1/16 7/16 7/16 7/16 17/32 3/4 21/32 31/64 21/32 7/8 1-3/16 1-1/2 21/64 17/32 7/16 19/32 7/16 21/32 7/8 17/32 7/8 7/8 |
0.750 1.125 0.687 0.590 0.750 0.875 0.335 0.650 0.950 1.250 1.344 2.030 0.826 1.125 1.375 1.500 0.950 1.250 1.250 1.562 0.650 1.000 1.312 0.812 1.125 1.500 0.595 0.687 0.750 0.826 1.062 0.950 0.750 1.000 1.250 1.625 2.000 0.600 0.800 0.650 0.860 0.703 0.998 1.250 0.850 1.250 1.250 |
.745-24-RH 1.120-24-RH .645-26-RH .437-26-RH .500-20-RH .625-16-RH .325-40-RH .645-26-RH .945-20-RH 1.245-20-RH 1.312-20-LH 2.000-18-LH .812-20-RH 1.062-20-RH 1.312-20-RH 1.437-20-RH .945-20-RH 1.187-20-RH No Thread 1.500-18-RH .645-24-RH .995-16-RH 1.307-16-RH .807-24-RH 1.120-20-RH 1.495-20-RH .437-26-RH .650-20-RH .670-20-RH .812-20-RH 1.050-20-RH .945-20-RH .745-18-RH .995-20-RH 1.245-20-RH 1.620-18-RH 1.995-20-RH .500-26-RH .795-20-RH .645-26-RH .850-20-RH .695-24-RH .988-20-RH 1.245-20-RH .772-18-RH No Thread 1.245-16-RH |
3-3/16 3-29/32 2-5/16 2-1/32 2-9/16 3-7/16 1-7/16 2-11/16 3 3-9/32 3-1/2 4-3/4 4-1/4 4-7/16 4-3/4 4-3/4 3 4-7/16 2-1/2 5-1/2 2-1/16 2-29/32 3-13/32 3-11/16 4-3/4 4-3/4 2-7/16 2-7/8 2-25/32 3-1/2 4-7/32 3 3-15/64 4-19/32 3 3-1/4 3-3/4 2-7/16 3-11/16 2-9/16 3-5/16 2-9/16 3-3/4 3-11/16 3-7/8 3-11/16 3-7/8 |