The Washer,spring Tension, cataloged under National Stock Number 5310-01-081-5465, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Associated Spring Corp Div of the Barnes Group Inc Dallas Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-081-5465 |
| Primary Part Number | U343-0100 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Associated Spring Corp Div of the Barnes Group Inc Dallas Div |
| Status | ACTIVE |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM50.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.672 INCHES NOMINAL0.672 INCHES NOMINAL IN |
| Material Thickness | 0.010 INCHES NOMINAL0.010 INCHES NOMINAL IN |
| Material | STEEL COMP 1050 OR STEEL COMP 1075 OVERALL |
| Hole Diameter | 0.363 INCHES NOMINAL0.363 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 |
|---|---|
| U343-0100 PRIMARY | Associated Spring Corp Div of the Barnes Group Inc Dallas Div (USA) |
| Reference | Meaning |
|---|---|
| SM-C-772961-3 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-081-5465 is a Washer,spring Tension, manufactured by Associated Spring Corp Div of the Barnes Group Inc Dallas Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-081-5465 has 1 manufacturer part number on file: U343-0100 (Associated Spring Corp Div of the Barnes Group Inc Dallas Div).
Key specifications for U343-0100: Overall Height: 0.120 INCHES NOMINAL0.120 INCHES NOMINAL IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM50.0 ROCKWELL C MAXIMUM; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.672 INCHES NOMINAL0.672 INCHES NOMINAL IN. 6 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.