
Nut -
| Detail | Characteristic | 
| DRILLED HOLE DIAMETER | 0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM | 
| BEARING SURFACE FINISH | 125.0 MICROINCHES | 
| BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED | 
| COUNTERSINK ANGLE | 110.0 DEGREES NOMINAL BOTH ENDS | 
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM | 
| HOLE CONFIGURATION STYLE | CONFIGURATION B | 
| HOLE TYPE AND QUANTITY | 3 DRILLED | 
| NUT HEIGHT | 0.188 INCHES NOMINAL | 
| NUT STYLE | HEXAGON | 
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL | STEEL COMP 4130 OVERALL | 
| NOMINAL THREAD SIZE | 0.250 INCHES | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL | 
| THREAD CLASS | 3B | 
| THREAD DIRECTION | LEFT-HAND | 
| THREAD SERIES | UNJF | 
| THREAD QUANTITY PER INCH | 28 | 
| WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM | 
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| Inventory | N/A {0} | 
| Estimated Ship Date | N/A {N/A} | 
| Inventory Note | N/A Need additional stock? Call (877) 920-1876 or email | 
| Weight | N/A .005 lb | 
| NSN | N/A 5310-00-825-0783 | 
| NIIN | N/A 00-825-0783 | 
| Part # Unpunctuated | N/A NAS509L4 | 
| Minimum Order Note | N/A Minimum order is 100. Must order in increments of 1. | 
| Note | N/A Our inventory is extensive. The majority of the items listed in our catalog are stocked and available for immediate shipment. | 
| California Residents | N/A Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. | 
