The Washer,shouldered, cataloged under National Stock Number 5310-01-086-6400, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-086-6400 |
| Primary Part Number | RB53158 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Height | 0.019 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | QQ-A-200/3 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.145 INCHES NOMINAL IN |
| Material Thickness | 0.060 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.025 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.860 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 | F |
| Part Number | Manufacturer |
|---|---|
| RB53158 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
| Reference | Meaning |
|---|---|
| RB53158 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-086-6400 is a Washer,shouldered, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-086-6400 has 1 manufacturer part number on file: RB53158 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
Key specifications for RB53158: Surface Treatment Document and Classification: MIL-A-8625 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.019 INCHES NOMINAL IN; Style Designator: SHOULDERED; Material Document and Classification: QQ-A-200/3 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.