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Large Hex Head Tapping Screws

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  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Applicable to screw types as indicated by code symbols.
    Type AB thread forming.
    Types B and BP thread forming and Types BF and BT thread cutting.
    Type C thread forming, Appendix; and Types D, F, G, and T thread cutting.
  • A slight rounding of all edges and corners of the hex surfaces of indented hex heads shall be permissible, provided the diameter of the bearing circle is equal to no less than 90% of the specified minimum width across flats dimension.
  • Unless otherwise specified by purchaser, regular hex heads shall be furnished, and both regular and large head styles may be of indented head, trimmed head, or fully upset head construction, at the option of manufacturer.
  • Dimensions across flats and across corners of the head shall be measured at the point of maximum metal. Taper of sides of hex (angle between one side and the axis) shall not exceed 2° or 0.004", whichever is greater, the specified width across flats being the large dimension.
  • The rounding due to lack of fill on all six corners of the head shall be reasonably uniform and the width across corners of the head shall be such that when a sharp ring having an inside diameter equal to the specified minimum width across corners is placed on the top and bottom of the head, the head shall protrude by an amount equal to, or greater than, the F value tabulated. See Appendix II for across corners gaging of hex heads.
  • Large hex head is intended for screw and washer assemblies - SEMS, as specified in ASME B18.1 and other applications requiring large bearing.




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Item #

Description

Nominal Size or Basic Screw Dia.

Max. (A)

Min. (W)

Max. (H)

Min. (F)

LHHTS00730XXX Large Hex Head Tapping Screw, with 0.0730" Nominal Dia. No. 1 N/A N/A 0.044 in 0.022 in
LHHTS00860XXX Large Hex Head Tapping Screw, with 0.0860" Nominal Dia. No. 2 N/A N/A 0.050 in 0.024 in
LHHTS00990XXX Large Hex Head Tapping Screw, with 0.0990" Nominal Dia. No. 3 N/A N/A 0.055 in 0.026 in
LHHTS01120XXX Large Hex Head Tapping Screw, with 0.1120" Nominal Dia. No. 4 0.219 in 0.238 in 0.060 in 0.029 in
LHHTS01250XXX Large Hex Head Tapping Screw, with 0.1250" Nominal Dia. No. 5 0.250 in 0.272 in 0.070 in 0.035 in
LHHTS01380XXX Large Hex Head Tapping Screw, with 0.1380" Nominal Dia. No. 6 N/A N/A 0.093 in 0.048 in
LHHTS01510XXX Large Hex Head Tapping Screw, with 0.1510" Nominal Dia. No. 7 N/A N/A 0.093 in 0.048 in
LHHTS01640XXX Large Hex Head Tapping Screw, with 0.1640" Nominal Dia. No. 8 0.312 in 0.340 in 0.110 in 0.058 in
LHHTS01900XXX Large Hex Head Tapping Screw, with 0.1900" Nominal Dia. No. 10 N/A N/A 0.120 in 0.063 in
LHHTS02160XXX Large Hex Head Tapping Screw, with 0.2160" Nominal Dia. No. 12 0.375 in 0.409 in 0.155 in 0.083 in
LHHTS02420XXX Large Hex Head Tapping Screw, with 0.2420" Nominal Dia. No. 14 0.438 in 0.477 in 0.190 in 0.103 in
LHHTS02500XXX Large Hex Head Tapping Screw, with 0.2500" Nominal Dia. 1/4 in 0.438 in 0.477 in 0.190 in 0.103 in
LHHTS03125XXX Large Hex Head Tapping Screw, with 0.3125" Nominal Dia. 5/16 in N/A N/A 0.230 in 0.125 in
LHHTS03200XXX Large Hex Head Tapping Screw, with 0.3200" Nominal Dia. No. 20 N/A N/A 0.230 in 0.125 in
LHHTS03720XXX Large Hex Head Tapping Screw, with 0.3720" Nominal Dia. No. 24 N/A N/A 0.295 in 0.162 in
LHHTS03750XXX Large Hex Head Tapping Screw, with 0.3750" Nominal Dia. 3/8 in N/A N/A 0.295 in 0.162 in
LHHTS04375XXX Large Hex Head Tapping Screw, with 0.4375" Nominal Dia. 7/16 in N/A N/A 0.348 in 0.193 in
LHHTS05000XXX Large Hex Head Tapping Screw, with 0.5000" Nominal Dia. 1/2 in N/A N/A 0.400 in 0.220 in
  Results 1 - 18 of 18 1 
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