The Washer,flat, cataloged under National Stock Number 5310-00-245-9609, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mgm Brakes Inc Div Indian Head Industries 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-245-9609 |
| Primary Part Number | 554A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mgm Brakes Inc Div Indian Head Industries Inc |
| Status | ACTIVE |
| Overall Diameter | 1.802 INCHES MINIMUM AND 1.822 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN |
| Thickness | 0.157 INCHES MINIMUM AND 0.187 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 |
|---|---|
| 554A PRIMARY | Mgm Brakes Inc Div Indian Head Industries Inc (USA) |
NSN 5310-00-245-9609 is a Washer,flat, manufactured by Mgm Brakes Inc Div Indian Head Industries Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-245-9609 has 1 manufacturer part number on file: 554A (Mgm Brakes Inc Div Indian Head Industries Inc).
Key specifications for 554A: Overall Diameter: 1.802 INCHES MINIMUM AND 1.822 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PHOSPHATE OVERALL; 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.