The Washer,flat, cataloged under National Stock Number 5310-00-349-8252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 9 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 | 5310-00-349-8252 |
| Primary Part Number | 7M1397 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Overall Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Hardness Rating | 75.7 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 79.3 ROCKWELL SUPERFICIAL 30-N MAXIMUM |
| Material Document and Classification | 1E463,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thickness | 0.036 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 |
|---|---|
| 7M1397 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5310-00-349-8252 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-349-8252 has 1 manufacturer part number on file: 7M1397 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7M1397: Overall Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Hardness Rating: 75.7 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 79.3 ROCKWELL SUPERFICIAL 30-N MAXIMUM; Material Document and Classification: 1E463,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.