The Washer,key, cataloged under National Stock Number 5310-00-986-9972, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-986-9972 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.320 INCHES NOMINAL IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.984 INCHES NOMINAL IN |
| Material Thickness | 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| External Key Quantity | 11 |
| Internal Prebent Key Length | 0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| External Prebent Key Width | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.671 INCHES MINIMUM AND 0.687 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 |
| Reference | Meaning |
|---|---|
| 2-080-017-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-986-9972 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-986-9972: Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.320 INCHES NOMINAL IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Style Designator: KEY. 12 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.