The Washer,flat, cataloged under National Stock Number 5310-00-462-9126, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eos Defence Systems Pty Limited. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-462-9126 |
| Primary Part Number | 1006599 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eos Defence Systems Pty Limited |
| Status | ACTIVE |
| Overall Diameter | 0.688 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTM 240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.344 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | SPECIAL REQUIREMENTS IN ACCORDANCE WITH GENERAL ELECTRIC CO IC NO. M160 CODE LETTERS A,B,C,D,E,F AND G |
| Thickness | 0.065 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 1006599 | Eos Defence Systems Pty Limited (AUS) |
| Reference | Meaning |
|---|---|
| 41E500-450PC45 | 5/9 Secondary reference AC Valve Inc |
| 41E500-450PC45 | 5/9 Secondary reference Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory |
| 41E-500-450PC45 | 3/1 Design control — primary reference U.S. Government activity |
| MS15795-812V1A | 5/9 Secondary reference U.S. Government activity |
| PL41E500-450PC45 | 5/9 Secondary reference Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory |
| PL-41E-500-450PC45 | 5/1 Secondary reference U.S. Government activity |
NSN 5310-00-462-9126 is a Washer,flat, manufactured by Eos Defence Systems Pty Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-462-9126 has 1 manufacturer part number on file: 1006599 (Eos Defence Systems Pty Limited).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-361-6526. Verify interchangeability with system specifications before substitution.
Key specifications for 1006599: Overall Diameter: 0.688 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Material Document and Classification: ASTM 240 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.