The Washer,spring Tension, cataloged under National Stock Number 5310-00-616-8738, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-616-8738 |
| Primary Part Number | 308946 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-6859 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | HOT ROLLED OR COLD DRAWN 1/2 HARD CONDITION |
| Style Designator | SPRING TENSION |
| Outside Diameter | 1.375 INCHES NOMINAL IN |
| Material Thickness | 0.010 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Material | BERYLLIUM OVERALL |
| Hole Diameter | 0.625 INCHES MINIMUM AND 0.645 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 |
|---|---|
| 308946 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 5310-00-616-8738 is a Washer,spring Tension, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-616-8738 has 1 manufacturer part number on file: 308946 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 308946: Overall Height: 0.109 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-P-6859 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Heat Treatment: HOT ROLLED OR COLD DRAWN 1/2 HARD CONDITION; Style Designator: SPRING TENSION. 8 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.