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Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
Unit of Measure

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product

N/A Drive Screws

Unit of Measure

N/A English

Nominal Size or Basic Screw Dia.

N/A 5/16 in

Nominal Size or Basic Screw Dia. (Decimal)

N/A 0.3150 in

Number of Thread Starts

N/A 11

Max. Outside Dia. (D)

N/A 0.315 in

Min. Outside Dia. (D)

N/A 0.309 in

Max. Head Dia. (A)

N/A 0.590 in

Min. Head Dia. (A)

N/A 0.557 in

Max. Head Height (H)

N/A 0.216 in

Min. Head Height (H)

N/A 0.198 in

Max. Pilot Dia. (P)

N/A 0.272 in

Min. Pilot Dia. (P)

N/A 0.267 in

Codes and Standards

Codes and Standards

N/A ASME B18.6.4 1998

Recommended Hole Size

Drill Size No.

N/A M

Hole Dia.

N/A 0.295 in