The Washer,flat, cataloged under National Stock Number 5310-01-553-8286, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-553-8286 |
| Primary Part Number | 219-.187 B1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Supplementary Features | MATERIAL IS BRASS WITH NO FINISH |
| Cross-Sectional Shape Style | RECTANGULAR |
| 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 |
|---|---|
| 219-.187 B1 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
| Reference | Meaning |
|---|---|
| 40006257-000 | 7/2 Vendor item drawing reference L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
NSN 5310-01-553-8286 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 5310-01-553-8286 has 1 manufacturer part number on file: 219-.187 B1 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 219-.187 B1: Supplementary Features: MATERIAL IS BRASS WITH NO FINISH; Cross-Sectional Shape Style: RECTANGULAR; End Item Identification: 5895-01-542-7716, SATELLITE COMMUNICATION SYSTEM. 2 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.