The Washer,key, cataloged under National Stock Number 5310-01-191-3153, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Timken Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-191-3153 |
| Primary Part Number | K-91512 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Internal Straight Key Width | 0.290 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 1.060 INCHES MAXIMUM IN |
| Heat Treatment | HOT ROLLED OR COLD ROLLED |
| Style Designator | KEY |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 3.735 INCHES MINIMUM AND 3.765 INCHES MAXIMUM IN |
| Material Thickness | 0.187 INCHES MINIMUM AND 0.207 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 2.400 INCHES MINIMUM AND 2.425 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 |
|---|---|
| K-91512 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| K91512 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-191-3153 is a Washer,key, manufactured by The Timken Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-191-3153 has 1 manufacturer part number on file: K-91512 (The Timken Corporation).
Key specifications for K-91512: Internal Straight Key Width: 0.290 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 1.060 INCHES MAXIMUM IN; Heat Treatment: HOT ROLLED OR COLD ROLLED; Style Designator: KEY. 10 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.