| Item Name | Washer Flat |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-802-1988 (008021988) |
| NCB Code | USA (00) |
| Manufacturer | Rockwell Collins Aerospace, Roller Bearing Company Of America, Lockheed Martin Corporation, Honeywell International Inc, Designatronics Incorporated, Avionics Specialist Inc, Nimikkeistokeskus Ncb Finland, Allmetal Screw Products Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 22 021-006 | rockwell collins aerospace | washer flat | RFQ |
| B4-4 | roller bearing company of america | washer flat | RFQ |
| 910229-04 | lockheed martin corporation | washer flat | RFQ |
| 1754570-4 | honeywell international inc | washer flat | RFQ |
| G68-4 | designatronics incorporated | washer flat | RFQ |
| 671-451-9004 | designatronics incorporated | washer flat | RFQ |
| 5030-1004 | designatronics incorporated | washer flat | RFQ |
| SA1176-4 | avionics specialist inc | washer flat | RFQ |
| 404-7277 | nimikkeistokeskus ncb finland | washer flat | RFQ |
| CSPP1-8-4 | allmetal screw products corp | washer flat | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABMW | PERIPHERAL SHAPE STYLE | ROUND |
| ABMX | CENTER HOLE SHAPE STYLE | ROUND |
| ABNM | THICKNESS | 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM |
| ADAV | OVERALL DIAMETER | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| AAGR | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| AAUB | HOLE DIAMETER | 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| Relevant Components for NSN - 5310-00-802-1988, 5310008021988 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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