AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Key |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-710-9429 (007109429) |
| NCB Code | USA (00) |
| Manufacturer | Lockheed Martin Corporation, Bell Helicopter Textron Inc, Pyramid Machine Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 204-040-253-1 | lockheed martin corporation | washer key | RFQ |
| 204-040-253-1 | bell helicopter textron inc | washer key | RFQ |
| 204-040-253-001 | bell helicopter textron inc | washer key | RFQ |
| 204-040-253-1 | pyramid machine corp | washer key | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 4.255 INCHES MINIMUM AND 4.265 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 4.610 INCHES NOMINAL |
| ABLB | INTERNAL PREBENT KEY LENGTH | 0.170 INCHES NOMINAL |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.200 INCHES NOMINAL |
| ABLK | INTERNAL PREBENT KEY WIDTH | 0.180 INCHES NOMINAL |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 2.065 INCHES MINIMUM AND 2.085 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 5.000 INCHES NOMINAL |
| ABMQ | EXTERNAL KEY QUANTITY | 19 |
| ABMR | INTERNAL KEY QUANTITY | 2 |
| ABPX | MATERIAL THICKNESS | 0.050 INCHES NOMINAL |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 24.5 DEGREES MINIMUM AND 25.5 DEGREES MAXIMUM |
| FEAT | SPECIAL FEATURES | EXTERNAL KEYS BENT 25 DEG |
| MATT | MATERIAL | STEEL OR STEEL COMP 4130 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6357 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE FILM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BPSFW4084,FSCM 97499 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | EXTERNAL AND INTERNAL PRE-BENT KEYS |
| Relevant Components for NSN - 5310-00-710-9429, 5310007109429 | ||||
| 5365-00-981-3580 (5365009813580) | 5306-01-663-0372 (5306016630372) | 5330-00-259-1415 (5330002591415) | 5340-00-140-8006 (5340001408006) | |
| 5310-01-055-6080 (5310010556080) | 5340-01-571-9066 (5340015719066) | 5360-01-528-5575 (5360015285575) | 5340-01-254-4525 (5340012544525) | |
| 5310-01-456-0920 (5310014560920) | 5331-01-311-6975 (5331013116975) | 5330-00-147-6676 (5330001476676) | 5365-01-201-0770 (5365012010770) | |
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