
Screw - Length: 1/4", Thread: 4-40, Socket Head, Cap Screw, Self-Locking, Cadmium Plated Alloy Steel
| Detail | Characteristic | 
| FASTENER LENGTH | 0.250 INCHES NOMINAL | 
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL | 
| HEAD DIAMETER | 0.176 INCHES MINIMUM AND 0.183 INCHES MAXIMUM | 
| HEAD HEIGHT | 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM | 
| HEAD STYLE | FLAT CHAMFER | 
| INTERNAL DRIVE STYLE | HEXAGON | 
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL | STEEL OVERALL | 
| MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH | 
| NOMINAL THREAD DIAMETER | 0.112 INCHES | 
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL | 
| THREAD CLASS | 3A | 
| THREAD LENGTH | 0.250 INCHES MINIMUM | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD SERIES DESIGNATOR | UNC | 
| THREAD QUANTITY PER INCH | 40 | 
| WIDTH ACROSS FLATS | 0.098 INCHES NOMINAL | 
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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 | 
| Thread Size | N/A 0.1120-40 | 
| Material | N/A Steel Alloy | 
| Length | N/A 1/4 in | 
| Drilling | N/A Undrilled Head | 
| Head Type | N/A Socket | 
| Head Angle | N/A 100 ? | 
| Industry Standards/Certification | N/A MS16997 | 
| Weight | N/A 0.001 lb | 
| Alternate Part Number | N/A 690926-01 NAS1352-04-4P | 
| NSN | N/A 5305-00-978-9342 | 
| NIIN | N/A 00-978-9342 | 
| Part # Unpunctuated | N/A MS169979 | 
| Minimum Order Note | N/A Minimum order is 50. Must order in increments of 1. | 
| Country of Origin | N/A USA | 
| 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. | 
