Washer - To Fit Size: #1/2, Washer, Countersunk And Plain, Cadmium Plated Steel
| Detail | Characteristic | 
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM | 
| HOLE DIAMETER | 0.501 INCHES MINIMUM AND 0.505 INCHES MAXIMUM | 
| OUTSIDE DIAMETER | 0.888 INCHES MINIMUM AND 0.898 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-658 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-18729 MIL SPEC 2ND MATERIAL RESPONSE OVERALL | 
| MATERIAL THICKNESS | 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM | 
| MATERIAL | STEEL COMP 4130 OVERALL | 
| RECESS ANGLE | 90.0 DEGREES NOMINAL | 
| RECESS DIAMETER | 0.622 INCHES MINIMUM AND 0.632 INCHES MAXIMUM | 
| STYLE DESIGNATOR | 15 RECESSED | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | CADMIUM OVERALL | 
                                Welcome Back
                                                                
Winback Offer                        
                                                                                Inventory | 
                                                                        N/A {0} | 
                                                                                Estimated Ship Date | 
                                                                        N/A {N/A} | 
                                                                                Inventory Note | 
                                                                        N/A Need additional stock? Call (877) 920-1876 or email | 
                                                                                NSN | 
                                                                        N/A 5310-01-057-3626 | 
                                                                                NIIN | 
                                                                        N/A 01-057-3626 | 
                                                                                Part # Unpunctuated | 
                                                                        N/A MS21206C8 | 
                                                                                Minimum Order Note | 
                                                                        N/A Minimum order is 5. Must order in increments of 5. | 
                                                                                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. | 
 

