The Washer,key, cataloged under National Stock Number 5310-01-157-8372, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Plc Div Defense (europe). Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-157-8372 |
| Primary Part Number | UBS34Q |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Plc Div Defense (europe) |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.840 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN |
| Split Key Length | 0.210 INCHES NOMINAL IN |
| External Prebent Key Length | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.826 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.580 INCHES NOMINAL IN |
| Material Thickness | 0.036 INCHES NOMINAL IN |
| External Key Quantity | 3 |
| External Prebent Key Angle | 15.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Angle Between External Keys | 90.0 DEGREES NOMINAL |
| Hole Diameter | 1.200 INCHES MINIMUM AND 1.205 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 |
|---|---|
| UBS34Q PRIMARY | Rolls-Royce Plc Div Defense (europe) (GBR) |
| Reference | Meaning |
|---|---|
| 99-781-1395 | 6/9 Informative reference only U.S. Government activity |
NSN 5310-01-157-8372 is a Washer,key, manufactured by Rolls-Royce Plc Div Defense (europe), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-157-8372 has 1 manufacturer part number on file: UBS34Q (Rolls-Royce Plc Div Defense (europe)).
Key specifications for UBS34Q: Distance From Centerline to Inside of Prebent Key: 0.840 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN; Split Key Length: 0.210 INCHES NOMINAL IN; External Prebent Key Length: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.826 INCHES NOMINAL IN. 14 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.