| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-548-5081 (005485081) |
| NCB Code | USA (00) |
| Manufacturer | Northrop Grumman Technical Services Inc, Alcoa Global Fasteners Inc, Northrop Grumman Systems Corporation, Lisi Aerospace Canada Corp, Hi Shear Corporation, Sps Technologies Inc |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 51B581-3-6 | northrop grumman technical services inc | screw close tolerance | 0jrc1 | RFQ |
| 51B581-3-6 | alcoa global fasteners inc | screw close tolerance | 92215 | RFQ |
| 51B581-3-6 | northrop grumman systems corporation | screw close tolerance | 76823 | RFQ |
| 51B581-3-6 | lisi aerospace canada corp | screw close tolerance | l4528 | RFQ |
| 51B581-3-6 | hi shear corporation | screw close tolerance | 73197 | RFQ |
| 51B581-3-6 | sps technologies inc | screw close tolerance | 80539 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.250 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.635 INCHES MINIMUM AND 0.682 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.297 INCHES MINIMUM AND 0.302 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| ANEE | GRIP LENGTH | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| MATT | MATERIAL | STEEL COMP 4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| ZZZK | SPECIFICATION/STANDARD DATA | 76823-51B581 MANUFACTURERS STANDARD |
| Relevant Components for NSN - 5305-00-548-5081, 5305005485081 | ||||
| 5305-01-339-0166 (5305013390166) | 5365-01-662-5153 (5365016625153) | 5360-01-351-8647 (5360013518647) | 5305-00-452-2092 (5305004522092) | |
| 5320-01-350-0370 (5320013500370) | 5365-01-048-9619 (5365010489619) | 5330-01-329-6615 (5330013296615) | 5331-00-493-8173 (5331004938173) | |
| 5330-00-146-3153 (5330001463153) | 5305-00-052-8884 (5305000528884) | 5330-01-651-5544 (5330016515544) | 5310-00-444-5136 (5310004445136) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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