| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-151-8660 (001518660) |
| NCB Code | USA (00) |
| Manufacturer | Northrop Grumman Systems Corporation, Heartland Precision Fasteners In, Aero Mechanical Fastening Systems Inc, Bf Goodrich Aerospace, Sps Technologies Inc, Huck International Inc |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| GS551P4-921 | northrop grumman systems corporation | screw shoulder | 26512 | RFQ |
| HP6551P4-921 | heartland precision fasteners in | screw shoulder | 0zc92 | RFQ |
| 2R1863-921 | aero mechanical fastening systems inc | screw shoulder | 1fy45 | RFQ |
| 2R1465-13 | bf goodrich aerospace | screw shoulder | 03481 | RFQ |
| PBF1286-921 | sps technologies inc | screw shoulder | 27624 | RFQ |
| BM19070-921 | huck international inc | screw shoulder | 97928 | RFQ |
| GS551P-4921 | aero mechanical fastening systems inc | screw shoulder | 1fy45 | RFQ |
| BM19070-4-921 | huck international inc | screw shoulder | 97928 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.406 INCHES MINIMUM AND 0.436 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.357 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.254 INCHES MINIMUM FIRST SHOULDER AND 0.256 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.796 INCHES MINIMUM FIRST SHOULDER AND 0.826 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES NOMINAL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | HALF OF TOP SURFACE OF HEAD PAINTED ORANGE |
| MATT | MATERIAL | STEEL COMP 4037 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-00-151-8660, 5305001518660 | ||||
| 5325-00-489-4951 (5325004894951) | 5305-01-688-2332 (5305016882332) | 5310-01-270-2593 (5310012702593) | 5360-01-362-9775 (5360013629775) | |
| 5305-01-574-2082 (5305015742082) | 5330-00-875-6402 (5330008756402) | 5310-01-166-6682 (5310011666682) | 5325-01-330-8489 (5325013308489) | |
| 5310-01-519-7106 (5310015197106) | 5310-12-130-8939 (5310121308939) | 5331-01-513-1941 (5331015131941) | 5310-01-360-7550 (5310013607550) | |
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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