ITW SHAKEPROOF AUTOMOTIVE PRODUCTS | 78189 |
AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | 88044 |
HOLE DIAMETER | 0.102 INCHES MINIMUM AND 0.109 INCHES MAXIMUM |
OUTSIDE DIAMETER | 0.215 INCHES MINIMUM AND 0.232 INCHES MAXIMUM |
MATERIAL THICKNESS | 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM |
MATERIAL | COPPER ALLOY OVERALL |
SURFACE TREATMENT | TIN OVERALL |
STYLE DESIGNATOR | FLAT INTERNAL TEETH |
DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY MATERIAL |
A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces |