Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
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Lockring-Drive-Tool--for-Size-On-Size-Studs
Unit of Measure
1 

Item #

Material

Heat Treat

Finish

Size

A - Dia +.015 -.025

B - Dia +.003 -.007

C - Dia +.002 -.007

D ±.05

E ±.05

SFC16D16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 16 N/A 0.500 in N/A 0.224 in N/A 0.172 in N/A 3.000 in N/A 4.000 in
SFC19D16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 19 N/A 0.500 in N/A 0.254 in N/A 0.198 in N/A 3.000 in N/A 4.000 in
SFC25D16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 25 N/A 0.620 in N/A 0.333 in N/A 0.258 in N/A 3.000 in N/A 4.000 in
SFC31D16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 31 N/A 0.620 in N/A 0.377 in N/A 0.321 in N/A 3.000 in N/A 4.000 in
SFC38D16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 38 N/A 0.750 in N/A 0.444 in N/A 0.383 in N/A 3.000 in N/A 4.000 in
SFC16DH16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 16 N/A 0.500 in N/A 0.255 in N/A 0.172 in N/A 3.000 in N/A 4.000 in
SFC19DH16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 19 N/A 0.500 in N/A 0.277 in N/A 0.198 in N/A 3.000 in N/A 4.000 in
SFC25DH16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 25 N/A 0.620 in N/A 0.357 in N/A 0.258 in N/A 3.000 in N/A 4.000 in
SFC31DH16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 31 N/A 0.620 in N/A 0.402 in N/A 0.321 in N/A 3.000 in N/A 4.000 in
SFC38DH16 N/A Alloy Steel N/A 48-58 HRC. N/A Black Oxide per MIL-C-13924 plus Oil per MIL-C-16173, GR3 N/A 38 N/A 0.750 in N/A 0.471 in N/A 0.383 in N/A 3.000 in N/A 4.000 in
Unit of Measure
1