The Washer,flat, cataloged under National Stock Number 5310-01-607-2129, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 7 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 | 5310-01-607-2129 |
| Primary Part Number | F145173 REV B ITEM 13 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.75 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.38 INCHES NOMINAL IN |
| Thickness | 0.13 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 |
|---|---|
| F145173 REV B ITEM 13 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 7421K3 | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-607-2129 is a Washer,flat, manufactured by Lake Shore Systems, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-607-2129 has 2 manufacturer part numbers on file: F145173 REV B ITEM 13 (Lake Shore Systems, Inc.), 7421K3 (Mcmaster-Carr Supply Co).
Key specifications for F145173 REV B ITEM 13: Overall Diameter: 0.75 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: WASHER,THRUST. 7 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.