The Washer,recessed, cataloged under National Stock Number 5310-01-130-0611, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-130-0611 |
| Primary Part Number | 1070268 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | 1E874,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 52.019 MILLIMETERS MINIMUM AND 52.045 MILLIMETERS MAXIMUM MM |
| Material Thickness | 8.521 MILLIMETERS MINIMUM AND 8.649 MILLIMETERS MAXIMUM MM |
| Recess Diameter | 46.26 MILLIMETERS NOMINAL MM |
| Material | IRON OVERALL |
| Hole Diameter | 44.5 MILLIMETERS MINIMUM AND 45.5 MILLIMETERS MAXIMUM MM |
| Recess Angle | 60.0 DEGREES NOMINAL |
| 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 |
|---|---|
| 1070268 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 7N4448 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| IPD1070268 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| 1PD7N4448 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
NSN 5310-01-130-0611 is a Washer,recessed, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-130-0611 has 1 manufacturer part number on file: 1070268 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1070268: Style Designator: RECESSED; Material Document and Classification: 1E874,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 52.019 MILLIMETERS MINIMUM AND 52.045 MILLIMETERS MAXIMUM MM; Material Thickness: 8.521 MILLIMETERS MINIMUM AND 8.649 MILLIMETERS MAXIMUM MM. 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.