The Washer,key, cataloged under National Stock Number 5310-00-527-3255, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Cornell-Carr Co., Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-527-3255 |
| Primary Part Number | KA20-5B |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Cornell-Carr Co., Inc. |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.140 INCHES NOMINAL IN |
| External Prebent Key Length | 0.060 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.291 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.240 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| External Prebent Key Width | 0.070 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.150 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| KA20-5B PRIMARY | Cornell-Carr Co., Inc. (USA) |
| KF52-743-100PC26SH1 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF52-538-100PC119 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF51-1758-100PC154 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF51-1758-200PC123 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| DX109-76PC534 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
| KA20-5PCB PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF51-1758-50PC154 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KA609PC534 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF52-539-140PC166 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KF51-899-75PC45 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| KB51-440-179ITEM491 PRIMARY | Gpe Controls, Inc Dba Shand & Jurs (USA) |
| Reference | Meaning |
|---|---|
| KA20-5B | 5/9 Secondary reference U.S. Government activity |
| 569-2200-1227574PC45 | 3/2 Design control — primary reference U.S. Government activity |
| 569-2200-1228581REVAPC166 | 3/2 Design control — primary reference U.S. Government activity |
| 569-2200-1228256REVDPC119 | 3/2 Design control — primary reference U.S. Government activity |
| 2200-3167143PC126SH1 | 3/2 Design control — primary reference U.S. Government activity |
| 2200-3123402PC534 | 3/2 Design control — primary reference U.S. Government activity |
| 422273-12 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 569-2200-1227665REVAPC154 | 3/2 Design control — primary reference U.S. Government activity |
| 569-2200-1227615REVAPC154 | 3/2 Design control — primary reference U.S. Government activity |
| 569-2200-1227763PC123 | 3/2 Design control — primary reference U.S. Government activity |
| KA20-5B | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-527-3255 is a Washer,key, manufactured by Cornell-Carr Co., Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-527-3255 has 12 manufacturer part numbers on file: KA20-5B (Cornell-Carr Co., Inc.), KF52-743-100PC26SH1 (Gpe Controls, Inc Dba Shand & Jurs), KF52-538-100PC119 (Gpe Controls, Inc Dba Shand & Jurs), KF51-1758-100PC154 (Gpe Controls, Inc Dba Shand & Jurs), KF51-1758-200PC123 (Gpe Controls, Inc Dba Shand & Jurs) and 7 more.
Key specifications for KA20-5B: Distance From Centerline to Inside of Prebent Key: 0.140 INCHES NOMINAL IN; External Prebent Key Length: 0.060 INCHES NOMINAL IN; Overall Distance Including Keys: 0.291 INCHES NOMINAL IN; Style Designator: KEY. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.