The Washer,spring Tension, cataloged under National Stock Number 5310-01-412-6014, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-412-6014 |
| Primary Part Number | AK624 BLACK OXIDE |
| 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 | 0.495 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Material Thickness | 0.098 INCHES NOMINAL IN |
| Material | STEEL COMP 1075 OVERALL |
| Hole Diameter | 0.281 INCHES MINIMUM AND 0.290 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 |
|---|---|
| AK624 BLACK OXIDE PRIMARY | Matthew Warren, Inc. Div Maryland Precision Spring (USA) |
| Reference | Meaning |
|---|---|
| AK624 BLACK OXIDE | 5/9 Secondary reference National Disc Spring Div Rolex Co |
| AK624 BLACK OXIDE | 3/9 Design control — primary reference Rolex Company Dba Rolex Company Div Rolex Company |
| 12931010 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
NSN 5310-01-412-6014 is a Washer,spring Tension, manufactured by Matthew Warren, Inc. Div Maryland Precision Spring, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-412-6014 has 1 manufacturer part number on file: AK624 BLACK OXIDE (Matthew Warren, Inc. Div Maryland Precision Spring).
Key specifications for AK624 BLACK OXIDE: Overall Height: 0.197 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Outside Diameter: 0.495 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN; Material Thickness: 0.098 INCHES NOMINAL 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.