The Washer,recessed, cataloged under National Stock Number 5310-00-119-4644, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-119-4644 |
| Primary Part Number | 5L7888 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Top Recess Diameter | 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN |
| Bottom Recess Diameter | 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN |
| Top Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | IE357,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.231 INCHES MINIMUM AND 3.237 INCHES MAXIMUM IN |
| Recess Depth | 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Material Thickness | 0.153 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Bottom Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| Material | STEEL OVERALL |
| Hole Diameter | 2.531 INCHES MINIMUM AND 2.537 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 |
|---|---|
| 5L7888 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 5L7888-00 | 5/9 Secondary reference Mil-Tech Mfg Inc |
NSN 5310-00-119-4644 is a Washer,recessed, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-119-4644 has 1 manufacturer part number on file: 5L7888 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 5L7888: Top Recess Diameter: 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN; Bottom Recess Diameter: 2.591 INCHES MINIMUM AND 2.597 INCHES MAXIMUM IN; Top Recess Angle: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM; Style Designator: RECESSED BOTH SIDES. 11 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.