| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-181-2490 (011812490) |
| NCB Code | USA (01) |
| Manufacturer | Allmetal Screw Products Corp |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| NICU-MS51975-22 | allmetal screw products corp | screw shoulder | 70318 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.235 INCHES MINIMUM AND 2.255 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.371 INCHES MINIMUM AND 0.373 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.745 INCHES MINIMUM AND 1.755 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| MATT | MATERIAL | NICKEL ALLOY 400 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Components Related to NSN - 5305-01-181-2490, 5305011812490 | ||||
| 5325-01-017-8809 (5325010178809) | 5330-01-278-3019 (5330012783019) | 5365-01-304-3832 (5365013043832) | 5305-15-060-1487 (5305150601487) | |
| 5305-01-361-3193 (5305013613193) | 5330-01-259-4088 (5330012594088) | 5340-01-672-8342 (5340016728342) | 5342-00-452-9798 (5342004529798) | |
| 5310-01-175-0629 (5310011750629) | 5330-01-120-4149 (5330011204149) | 5331-01-441-4577 (5331014414577) | 5330-01-425-8795 (5330014258795) | |
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