The Washer,spring Tension, cataloged under National Stock Number 5310-01-365-3191, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Matthew Warren, Inc. Div Maryland Precision Spring. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-365-3191 |
| Primary Part Number | AM231013 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Matthew Warren, Inc. Div Maryland Precision Spring |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.898 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN |
| Material Thickness | 0.047 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 0.402 INCHES MINIMUM AND 0.409 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 |
|---|---|
| AM231013 PRIMARY | Matthew Warren, Inc. Div Maryland Precision Spring (USA) |
| 299-4562-038 PRIMARY | Mpc Products Corporation Dba Woodward Mpc, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AM231013 | 5/9 Secondary reference Rolex Company Dba Rolex Company Div Rolex Company |
NSN 5310-01-365-3191 is a Washer,spring Tension, manufactured by Matthew Warren, Inc. Div Maryland Precision Spring, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-365-3191 has 2 manufacturer part numbers on file: AM231013 (Matthew Warren, Inc. Div Maryland Precision Spring), 299-4562-038 (Mpc Products Corporation Dba Woodward Mpc, Inc.).
Key specifications for AM231013: Overall Height: 0.073 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Style Designator: SPRING TENSION; Outside Diameter: 0.898 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN; Material Thickness: 0.047 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. 5 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.