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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  • Threads within point taper length shall have unfinished crests.
  • The width of flat at crest of thread shall not exceed 0.004 in. for sizes up to and including No. 8, and 0.006 in. for larger sizes.
  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • For determining the effective grip length of BP screws.
Threads and Points for Types B Thread Forming Tapping Screws
Detail of Thread Form
Unit of Measure
Items Threads and Points for Types B Thread Forming Tapping Screws
TFTSB00600XXX
Thread Forming Tapping Screws Type B, with 0.0600" Nominal Dia. 		Threads and Points for Types B Thread Forming Tapping Screws
TFTSB00730XXX
Thread Forming Tapping Screws Type B, with 0.0730" Nominal Dia. 		Threads and Points for Types B Thread Forming Tapping Screws
TFTSB00860XXX
Thread Forming Tapping Screws Type B, with 0.0860" Nominal Dia. 		Threads and Points for Types B Thread Forming Tapping Screws
TFTSB00990XXX
Thread Forming Tapping Screws Type B, with 0.0990" Nominal Dia. 		Threads and Points for Types B Thread Forming Tapping Screws
TFTSB01120XXX
Thread Forming Tapping Screws Type B, with 0.1120" Nominal Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Tapping Screws
Codes and Standards N/A ASME B18.6.4 1998
Unit of Measure N/A English
Nominal Size or Basic Screw Dia. N/A No. 0 N/A No. 1 N/A No. 2 N/A No. 3 N/A No. 4
Nominal Size or Basic Screw Dia. (Decimal) N/A 0.0600 in N/A 0.0730 in N/A 0.0860 in N/A 0.0990 in N/A 0.1120 in
Threads Per Inch N/A 48 N/A 42 N/A 32 N/A 28 N/A 24
Max. Major Dia. (D) N/A 0.060 in N/A 0.075 in N/A 0.088 in N/A 0.101 in N/A 0.114 in
Min. Major Dia. (D) N/A 0.054 in N/A 0.069 in N/A 0.082 in N/A 0.095 in N/A 0.108 in
Max. Minor Dia. (d) N/A 0.036 in N/A 0.049 in N/A 0.064 in N/A 0.075 in N/A 0.086 in
Min. Minor Dia. (d) N/A 0.033 in N/A 0.046 in N/A 0.060 in N/A 0.071 in N/A 0.082 in
Ref. Point Dia. (P) N/A 0.031 in N/A 0.044 in N/A 0.058 in N/A 0.068 in N/A 0.079 in
Max. Point Taper Length (S) N/A 0.042 in N/A 0.048 in N/A 0.062 in N/A 0.071 in N/A 0.083 in
Min. Point Taper Length (S) N/A 0.031 in N/A 0.036 in N/A 0.047 in N/A 0.054 in N/A 0.063 in
Min. Practical Nominal Screw Lengths for 90ยบ Heads (L) N/A 1/8 in N/A 1/8 in N/A 5/32 in N/A 3/16 in N/A 3/16 in
Min. Practical Nominal Screw Lengths for Csk Heads (L) N/A 1/8 in N/A 5/32 in N/A 3/16 in N/A 7/32 in N/A 1/4 in