The Washer,flat, cataloged under National Stock Number 5310-01-357-1638, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Illinois Tool Works Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-357-1638 |
| Primary Part Number | 53X-02-215 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Illinois Tool Works Inc |
| Status | ACTIVE |
| Overall Diameter | 1.060 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281D,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | NICKEL ALLOY 400 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.280 INCHES NOMINAL IN |
| Thickness | 0.090 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 |
|---|---|
| 53X-02-215 | Naval Sea Systems Command (USA) |
| 53X-02-215 PRIMARY | Illinois Tool Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 53X-02-215 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
NSN 5310-01-357-1638 is a Washer,flat, manufactured by Illinois Tool Works Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-357-1638 has 2 manufacturer part numbers on file: 53X-02-215 (Naval Sea Systems Command), 53X-02-215 (Illinois Tool Works Inc).
Key specifications for 53X-02-215: Overall Diameter: 1.060 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281D,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.