5305-00-548-5077
Close Tolerance Screw
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Official Item Classification
- Name
- Close Tolerance Screw
- (NSN) National Stock Number
- 5305-00-548-5077
- (FSG) Federal Supply Group
- 53 Hardware and Abrasives
- (FSC) Federal Supply Classification
- 5305 Screws
- (INC) Item Name Code
- 29294
- (FIIG) Federal Item Identification Guide
- A003B0
- Date
- 10/15/1974 (51 years ago)
0.862 inches minimum and 0.909 inches maximum fastener length, 0.290 inches minimum and 0.357 inches maximum thread length, right-hand thread direction, flat countersunk head style, 3a thread class
Specs & Compatibility
3a
right-hand
0.290 inches minimum and 0.357 inches maximum
0.862 inches minimum and 0.909 inches maximum
flat countersunk
0.390 inches minimum and 0.395 inches maximum
0.2485 inches minimum and 0.2495 inches maximum
0.076 inches nominal first hole
offset cruciform (torque set)
0.250 inches
0.552 inches minimum and 0.572 inches maximum
28
180000 pounds per square inch
39.0 rockwell c minimum and 43.0 rockwell c maximum overall
100.0 degrees nominal
0.736 inches minimum and 0.803 inches maximum first hole
32.0 microinches grip
steel comp 4340 or steel comp 4140 or steel comp 8740 overall
cadmium and chromate overall
qq-p-416,ty 2,cl 2 fed spec single treatment response overall
unjf
76823-51b581 manufacturers standard
Regulatory Compliance
Precious metal content is unknown
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
0029294
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| Part Number | Description |
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| 51B581-4-9 | Close Tolerance Screw |
| 51B581-4-9H | Close Tolerance Screw |