The Washer,lock, cataloged under National Stock Number 5310-00-877-6739, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Emcore Space & Navigation Corporation Div Space & Navigation. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-877-6739 |
| Primary Part Number | 530-4BN |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Emcore Space & Navigation Corporation Div Space & Navigation |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.186 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| Color | BLACK OVERALL |
| Surface Treatment | NICKEL OVERALL |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.124 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 |
|---|---|
| 530-4BN PRIMARY | Emcore Space & Navigation Corporation Div Space & Navigation (USA) |
| Reference | Meaning |
|---|---|
| 530-4BN | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
NSN 5310-00-877-6739 is a Washer,lock, manufactured by Emcore Space & Navigation Corporation Div Space & Navigation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-877-6739 has 1 manufacturer part number on file: 530-4BN (Emcore Space & Navigation Corporation Div Space & Navigation).
Key specifications for 530-4BN: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.186 INCHES NOMINAL IN; Material Thickness: 0.031 INCHES NOMINAL IN; Color: BLACK OVERALL. 7 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.