Washer Head Machine Screw - Length: 1/2", Grip: 1/8", Thread: 1/4-28, Cadmium Plated Steel, Phillips Recess
| Detail | Characteristic | 
| EXTENDED WASHER DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | 
| EXTENDED WASHER THICKNESS | 0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM | 
| FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM | 
| HEAD DIAMETER | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM | 
| HEAD HEIGHT | 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM | 
| HEAD STYLE | ROUND EXTENDED WASHER | 
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | 
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | 
| NOMINAL THREAD DIAMETER | 0.250 INCHES | 
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE | 
| SCREW MATERIAL | STEEL COMP 8630 OR STEEL COMP 4037 | 
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE | 
| SCREW SURFACE TREATMENT | CADMIUM OR ZINC | 
| THREAD CLASS | 3A | 
| THREAD LENGTH | 0.257 INCHES MINIMUM AND 0.422 INCHES MAXIMUM | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD SERIES DESIGNATOR | UNF | 
| THREAD QUANTITY PER INCH | 28 | 
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                    Unit of Measure
                    
               
        
            Discount Table - AN525-416R8
- Unit
- Discount Price / %
- 100 - 499
- $0.67
- 500 - 999
- $0.65
- 1000 - 2499
- $0.55
- 2500 and up
- $0.52
| Sold In | N/A EA | 
| Inventory | N/A {0} | 
| Estimated Ship Date | N/A {N/A} | 
| Inventory Note | N/A Need additional stock? Call (877) 920-1876 or email | 
| Thread Size | N/A 1/4-28 | 
| Material | N/A Steel Alloy | 
| Length | N/A 1/2 in | 
| Grip | N/A 0.125 in | 
| Head Type | N/A Washer | 
| Industry Standards/Certification | N/A AN525 | 
| Weight | N/A 0.009 lb | 
| NSN | N/A 5305-00-282-0135 | 
| NIIN | N/A 00-282-0135 | 
| Part # Unpunctuated | N/A AN525416R8 | 
| Minimum Order Note | N/A Minimum order is 50. Must order in increments of 1. | 
| Country of Origin | N/A USA | 
| Pre-Packaged Bag Quantity | N/A 50 | 
| Applications | N/A Structural | 
| 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. | 
 
 


