The Washer,flat, cataloged under National Stock Number 5310-01-511-0399, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Accurate Screw Machine Corp Div Accurate Screw Machine Corporation. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-511-0399 |
| Primary Part Number | 9704-.250-D-2 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625F TYPE II CLASS 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.812 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC ACETAL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.260 INCHES NOMINAL IN |
| Thickness | 0.250 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 |
|---|---|
| 6390645 FIND 119 | Naval Sea Systems Command (USA) |
| 9704-.250-D-2 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
NSN 5310-01-511-0399 is a Washer,flat, manufactured by Accurate Screw Machine Corp Div Accurate Screw Machine Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-511-0399 has 2 manufacturer part numbers on file: 6390645 FIND 119 (Naval Sea Systems Command), 9704-.250-D-2 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 9704-.250-D-2: Surface Treatment Document and Classification: MIL-A-8625F TYPE II CLASS 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.812 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Special Features: MATERIAL LISTED AS DELRIN. 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.