The Washer,spring Tension, cataloged under National Stock Number 5310-01-041-7121, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 7 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 | 5310-01-041-7121 |
| Primary Part Number | 3138812-1 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM |
| Outside Diameter | 0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1095 OVERALL |
| Hole Diameter | 0.440 INCHES NOMINAL0.440 INCHES NOMINAL 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 |
|---|---|
| 3138812-1 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5310-01-041-7121 is a Washer,spring Tension, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-041-7121 has 1 manufacturer part number on file: 3138812-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 3138812-1: Overall Height: 0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM; Outside Diameter: 0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN. 7 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.