The Washer,flat, cataloged under National Stock Number 5310-01-449-9956, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Thales Defense & Security Inc Dba Thales Communications Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-449-9956 |
| Primary Part Number | SS-75174 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Thales Defense & Security Inc Dba Thales Communications Inc |
| Status | ACTIVE |
| Overall Diameter | 1.177 INCHES MINIMUM AND 1.197 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Thickness | 0.060 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 |
|---|---|
| SS-75174 PRIMARY | Thales Defense & Security Inc Dba Thales Communications Inc (USA) |
| Reference | Meaning |
|---|---|
| 5710-302-60 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-449-9956 is a Washer,flat, manufactured by Thales Defense & Security Inc Dba Thales Communications Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-449-9956 has 1 manufacturer part number on file: SS-75174 (Thales Defense & Security Inc Dba Thales Communications Inc).
Key specifications for SS-75174: Overall Diameter: 1.177 INCHES MINIMUM AND 1.197 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING OVERALL. 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.