The Washer,split, cataloged under National Stock Number 5310-01-168-7259, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. 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 | 5310-01-168-7259 |
| Primary Part Number | 6118389-1 |
| Item Name | Washer,split |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance Across Split Opening | 0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Style Designator | SPLIT |
| Material Document and Classification | QQ-A-250/11,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Material Thickness | 0.029 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE OVERALL |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Hole Diameter | 0.188 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 |
|---|---|
| 6118389-1 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 5310-01-168-7259 is a Washer,split, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-168-7259 has 1 manufacturer part number on file: 6118389-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 6118389-1: Surface Treatment Document and Classification: MIL-C-5541,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance Across Split Opening: 0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN; Style Designator: SPLIT; Material Document and Classification: QQ-A-250/11,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.