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BS 4183:1967

Specification for machine screws and machine screw nuts. Metric series

Standard Details

With ISO metric screw threads to BS 3643, 1 mm to 20 mm diameter. Dimensions, tolerances, mechanical requirements for countersunk, raised countersunk, pan and cheese head screws with slotted heads, and countersunk, raised countersunk and pan head screws with recessed heads. Dimensions, tolerances, general requirements for square and hexagon machine screw nuts (pressed type). Checking recess penetration, dimensioning of 90° countersunk heads, standard sizes. See BS 1981, BS 3692.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 4183:1967
Document Year: 1967
Pages: 42
  • Section Volume:
  • GBM11 Screw Threads & Fasteners (GMB11)

Life Cycle

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Confirmed
BS 4183:1967
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