| Item Name | Screw Cap Socket Head |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-637-8413 (006378413) |
| NCB Code | USA (00) |
| Manufacturer | National Aerospace Standards Com, Military Specifications, Nylok Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.359 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 0.459 INCHES MINIMUM AND 0.479 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.371 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | PELLET THREADS |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQBC | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| MATT | MATERIAL | STEEL COMP 8740 OVERALL OR STEEL COMP 8630 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 4037 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-00-637-8413, 5305006378413 | ||||
| 5365-01-408-0738 (5365014080738) | 5360-01-398-4043 (5360013984043) | 5340-01-691-6542 (5340016916542) | 5320-01-436-2383 (5320014362383) | |
| 5306-01-314-9902 (5306013149902) | 5360-01-309-0721 (5360013090721) | 5340-01-572-7694 (5340015727694) | 5330-01-590-0378 (5330015900378) | |
| 5305-00-885-9913 (5305008859913) | 5305-01-107-6588 (5305011076588) | 5360-00-419-0733 (5360004190733) | 5365-01-088-3799 (5365010883799) | |
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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