The Washer,flat, cataloged under National Stock Number 5310-00-945-0856, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rogerson Kratos. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-945-0856 |
| Primary Part Number | 538059 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rogerson Kratos |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.261 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN |
| Thickness | 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM 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 |
|---|---|
| 538059 | Paradigm Manchester Inc. Dba Pursuit Aerospace (USA) |
| 538059 | Crest Good Manufacturing Co Inc (USA) |
| 538059 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 538059 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| 538059 PRIMARY | Rogerson Kratos (USA) |
| 538059 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 538059 | 5/9 Secondary reference Dynamic Gunver Technologies Llc |
| 538059 | 5/9 Secondary reference U.S. Government activity |
| 538059 | 3/2 Design control — primary reference U.S. Government activity |
| 538059 | 5/9 Secondary reference Gould E a and Co |
| 538059 | C/1 Advisory reference — outside the item-of-supply concept Nielsen Hardware Corporation |
NSN 5310-00-945-0856 is a Washer,flat, manufactured by Rogerson Kratos, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-945-0856 has 6 manufacturer part numbers on file: 538059 (Paradigm Manchester Inc. Dba Pursuit Aerospace), 538059 (Crest Good Manufacturing Co Inc), 538059 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 538059 (Alinabal Holdings Corporation Div Engineered Products Group), 538059 (Rogerson Kratos) and 1 more.
Key specifications for 538059: Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Material Document and Classification: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.