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BS A 401-420:2015
Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below ¼ inch) in various materials
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Summary
Acceptance inspection;Threaded fasteners;Tensile testing;Bolts;Aluminium alloys;Fasteners;External-thread fasteners;Macroscopic examination;Quality assurance;Steels;Forgings;Aircraft components;Heat treatment;Hexagonal-head fasteners;Threads;Pan-head fasteners;Dimensional tolerances;Internal-thread fasteners;Metallography;Space technology components;Statistical quality control;Surface defects;Unified screw threads;Marking;Hardness;Air transport engineering;Threaded components;Inspection;Defects;Nuts
Technical characteristics
| Publisher | British Standards Institution (BSI) |
| Publication Date | 10/31/2015 |
| Page Count | 36 |
| Themes | Nuts |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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