The Washer,key, cataloged under National Stock Number 5310-00-264-1887, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ambac International Corporation Div Ambac International. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-264-1887 |
| Primary Part Number | WA1182U |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ambac International Corporation Div Ambac International |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM0.090 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.718 INCHES NOMINAL0.718 INCHES NOMINAL IN |
| Style Designator | KEYKEY |
| Material Document and Classification | -SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL-SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.468 INCHES NOMINAL0.468 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN |
| External Key Quantity | 55 |
| Internal Prebent Key Length | 0.062 INCHES NOMINAL0.062 INCHES NOMINAL IN |
| External Prebent Key Width | 0.156 INCHES MAXIMUM0.156 INCHES MAXIMUM IN |
| Material | STEEL COMP 1330H OVERALL |
| Hole Diameter | 0.328 INCHES NOMINAL0.328 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 |
|---|---|
| WA1182U PRIMARY | Ambac International Corporation Div Ambac International (USA) |
| WA1182 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
| Reference | Meaning |
|---|---|
| 62626D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-264-1887 is a Washer,key, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-264-1887 has 2 manufacturer part numbers on file: WA1182U (Ambac International Corporation Div Ambac International), WA1182 (Ambac International Corporation Div Ambac International).
Key specifications for WA1182U: Internal Prebent Key Width: 0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM0.090 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.718 INCHES NOMINAL0.718 INCHES NOMINAL IN; Style Designator: KEYKEY; Material Document and Classification: -SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL-SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.