The Washer,lock, cataloged under National Stock Number 5310-00-455-3396, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bsi Standards Limited. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-455-3396 |
| Primary Part Number | SP47E |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bsi Standards Limited |
| Status | ACTIVE |
| Heat Treatment | AS FABRICATED |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.511 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN |
| Material Thickness | 0.056 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.250 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 |
|---|---|
| SP47E PRIMARY | Bsi Standards Limited (GBR) |
| Reference | Meaning |
|---|---|
| 99-941-6644 | 6/9 Informative reference only Nato Stock Number Potential Interchangeability Link |
| SP47E | 5/9 Secondary reference Ufc Aerospace Europe Limited |
| 991-4-00093-007 | 5/9 Secondary reference Leonardo Uk Ltd |
| 991-4-00093-007 | 5/9 Secondary reference British Aerospace Land & Sea Systems, Post Design Services |
| 99-9416644 | 6/9 Informative reference only U.S. Government activity |
NSN 5310-00-455-3396 is a Washer,lock, manufactured by Bsi Standards Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-455-3396 has 1 manufacturer part number on file: SP47E (Bsi Standards Limited).
Key specifications for SP47E: Heat Treatment: AS FABRICATED; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.511 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN; Material Thickness: 0.056 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN. 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.