100°, Flush Head Screw - Length: 0.906", Grip: 0.438", Thread: 1/4-28, Shear, Close Tolerance Screw, Alloy Steel
| Detail | Characteristic |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.891 INCHES MINIMUM AND 0.936 INCHES MAXIMUM |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| HEAD DIAMETER | 0.452 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR AN-S-9 MIL STD SINGLE MATERIAL RESPONSE |
| SCREW MATERIAL | STEEL COMP 8630 |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE |
| SCREW SURFACE TREATMENT | CADMIUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.367 INCHES MINIMUM AND 0.513 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 28 |
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Unit of Measure
Discount Table - NAS517-4-7
- Unit
- Discount Price / %
- 500 - 999
- $0.90
- 1000 - 2499
- $0.89
- 2500 - 4999
- $0.88
- 5000 and up
- $0.85
Sold In |
N/A Per Package |
Inventory |
N/A {10482} |
Estimated Ship Date |
N/A Ships in 1 Business Day |
Inventory Note |
N/A Need additional stock? Call (877) 920-1876 or email |
Thread Size |
N/A 0.2500-28 |
Length |
N/A 0.906 in |
Grip |
N/A 0.438 in |
Head Type |
N/A Flat |
Head Angle |
N/A 100 º |
Industry Standards/Certification |
N/A NAS517 |
Weight |
N/A 0.015 lb |
NSN |
N/A 5305-00-576-6617 |
NIIN |
N/A 00-576-6617 |
Part # Unpunctuated |
N/A NAS51747 |
Minimum Order Note |
N/A Minimum order is 100. 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. |
