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) | 00-527-5581 (005275581) |
| NCB Code | USA (00) |
| Manufacturer | Springfield Armory |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.625 INCHES NOMINAL |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.128 INCHES NOMINAL |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.187 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.4372 INCHES NOMINAL |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.0338 INCHES MINIMUM AND 0.0538 INCHES MAXIMUM |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 90.0 DEGREES NOMINAL |
| FEAT | SPECIAL FEATURES | INSIDE DIA HAS A 12-POINT HOLE SHAPE |
| MATT | MATERIAL | STEEL COMP 1025 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
| Relevant Components for NSN - 5310-00-527-5581, 5310005275581 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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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