Sales Systems, Limited
Sales Systems, Limited
700 Florida Avenue
Portsmouth, Virginia 23707
Toll Free: 800.368.3711
Phone: 757.397.0763
Fax Sales: 757.393.3669
Email: info@salessystemsltd.com
Website: www.salessystemsltd.com
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  • Applicable to screw types as indicated by code symbols.
    Type AB thread forming.
    Type C thread forming; and Types D, F, G, and T thread cutting.
  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Screws of these lengths and shorter shall have undercut heads. Use Type AB undercut head screws in place of Type A screws for these lengths and shorter.
  • Tabulated values determined from formula for H max, Appendix.
  • No tolerance for gaging diameter is given. If the gaging diameter of the gage used differs from tabulated value, the protrusion will be affected accordingly and the proper protrusion values must be recalculated using the formulas shown in Appendix.
Slotted Flat Countersunk Head Tapping Screws
Unit of Measure
1 

Item #

Description

Nominal Size or Basic Screw Dia.

L

Max. (A)

Ref. (H)

Max. (J)

Max. (T)

SFCHTS00600XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.112" Head Dia. N/A No. 0 N/A 3/16 in N/A 0.112 in N/A 0.035 in N/A 0.023 in N/A 0.015 in
SFCHTS00730XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.137" Head Dia. N/A No. 1 N/A 3/16 in N/A 0.137 in N/A 0.043 in N/A 0.026 in N/A 0.019 in
SFCHTS00860XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.162" Head Dia. N/A No. 2 N/A 3/16 in N/A 0.162 in N/A 0.051 in N/A 0.031 in N/A 0.023 in
SFCHTS00990XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.187" Head Dia. N/A No. 3 N/A 7/32 in N/A 0.187 in N/A 0.059 in N/A 0.035 in N/A 0.027 in
SFCHTS01120XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.212" Head Dia. N/A No. 4 N/A 1/4 in N/A 0.212 in N/A 0.067 in N/A 0.039 in N/A 0.030 in
SFCHTS01250XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.237" Head Dia. N/A No. 5 N/A 1/4 in N/A 0.237 in N/A 0.075 in N/A 0.043 in N/A 0.034 in
SFCHTS01380XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.262" Head Dia. N/A No. 6 N/A 5/16 in N/A 0.262 in N/A 0.083 in N/A 0.048 in N/A 0.038 in
SFCHTS01510XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.287" Head Dia. N/A No. 7 N/A 3/8 in N/A 0.287 in N/A 0.091 in N/A 0.048 in N/A 0.041 in
SFCHTS01640XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.312" Head Dia. N/A No. 8 N/A 7/16 in N/A 0.312 in N/A 0.100 in N/A 0.054 in N/A 0.045 in
SFCHTS01900XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.362" Head Dia. N/A No. 10 N/A 1/2 in N/A 0.362 in N/A 0.116 in N/A 0.060 in N/A 0.053 in
SFCHTS02160XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.412" Head Dia. N/A No. 12 N/A 9/16 in N/A 0.412 in N/A 0.132 in N/A 0.067 in N/A 0.060 in
SFCHTS02420XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.462" Head Dia. N/A No. 14 N/A 5/8 in N/A 0.462 in N/A 0.148 in N/A 0.075 in N/A 0.068 in
SFCHTS02500XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.477" Head Dia. N/A 1/4 in N/A 5/8 in N/A 0.477 in N/A 0.153 in N/A 0.075 in N/A 0.070 in
SFCHTS02680XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.512" Head Dia. N/A No. 16 N/A 3/4 in N/A 0.512 in N/A 0.164 in N/A 0.075 in N/A 0.075 in
SFCHTS02940XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.561" Head Dia. N/A No. 18 N/A 13/16 in N/A 0.561 in N/A 0.180 in N/A 0.084 in N/A 0.083 in
SFCHTS03125XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.597" Head Dia. N/A 5/16 in N/A 13/16 in N/A 0.597 in N/A 0.191 in N/A 0.084 in N/A 0.088 in
SFCHTS03200XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.611" Head Dia. N/A No. 20 N/A 13/16 in N/A 0.611 in N/A 0.196 in N/A 0.084 in N/A 0.090 in
SFCHTS03720XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.711" Head Dia. N/A No. 24 N/A 1 in N/A 0.711 in N/A 0.228 in N/A 0.094 in N/A 0.105 in
SFCHTS03750XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.717" Head Dia. N/A 3/8 in N/A N/A 0.717 in N/A 0.230 in N/A 0.094 in N/A 0.106 in
SFCHTS04375XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.760" Head Dia. N/A 7/16 in N/A N/A 0.760 in N/A 0.223 in N/A 0.094 in N/A 0.103 in
SFCHTS05000XXX N/A Slotted Flat Countersunk Head Tapping Screw, with 0.815" Head Dia. N/A 1/2 in N/A N/A 0.815 in N/A 0.223 in N/A 0.106 in N/A 0.103 in
Unit of Measure
1