The Washer,flat, cataloged under National Stock Number 5310-01-016-0488, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Palomar Products, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-016-0488 |
| Primary Part Number | 3359741 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Palomar Products, Inc. |
| Status | ACTIVE |
| Overall Diameter | 1.290 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-8I506,COND A MIL SPEC 1ST MATERIAL RESPONSE AND QQ-S-766,CLASS 301 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING AND STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Thickness | 0.022 INCHES MINIMUM AND 0.042 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 |
|---|---|
| 3359741 PRIMARY | Palomar Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3359741 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-016-0488 is a Washer,flat, manufactured by Palomar Products, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-016-0488 has 1 manufacturer part number on file: 3359741 (Palomar Products, Inc.).
Key specifications for 3359741: Overall Diameter: 1.290 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-8I506,COND A MIL SPEC 1ST MATERIAL RESPONSE AND QQ-S-766,CLASS 301 FED SPEC 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Special Features: CENTER HOLE DIA. 1.050 IN MIN. 1.070 IN MAX IN. 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.