The Washer,flat, cataloged under National Stock Number 5310-01-664-9783, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-664-9783 |
| Primary Part Number | J2655FBN0438S1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTMA380 ASSN STD SINGLE TREATMENT RESPONSE BODY |
| Overall Diameter | 0.875 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE BODY |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 316L BODY |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.469 INCHES NOMINAL IN |
| Thickness | 0.063 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 |
|---|---|
| J2655FBN0438S1 PRIMARY | Sae International Dba Sae International (USA) |
| 212-8654329ITEM009 | Blackmore & Glunt Inc Div Blackmore and Glunt, Inc. (USA) |
| Reference | Meaning |
|---|---|
| J2655FBN0438S1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-01-664-9783 is a Washer,flat, manufactured by Sae International Dba Sae International, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-664-9783 has 2 manufacturer part numbers on file: J2655FBN0438S1 (Sae International Dba Sae International), 212-8654329ITEM009 (Blackmore & Glunt Inc Div Blackmore and Glunt, Inc.).
Key specifications for J2655FBN0438S1: Surface Treatment Document and Classification: ASTMA380 ASSN STD SINGLE TREATMENT RESPONSE BODY; Overall Diameter: 0.875 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE BODY. 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.