| Item Name | Screw Lag |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-402-5751 (004025751) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications, Military Standards Corp |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| FFB561 | federal specifications | screw lag | 81348 | RFQ |
| MS16992-510 | military standards corp | screw lag | 96906 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 4.500 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.425 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.237 INCHES MINIMUM FIRST SHOULDER AND 0.260 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.094 INCHES MINIMUM FIRST SHOULDER |
| CQBC | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL |
| CRGF | NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A,AB OR BA) |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FF-B-561,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | ZINC OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A153-60 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1 STYLE AND B GRADE |
| Relevant Components for NSN - 5305-00-402-5751, 5305004025751 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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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