The Washer,spring Tension, cataloged under National Stock Number 5310-01-033-2343, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Hilliard Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-033-2343 |
| Primary Part Number | L4-35-312U |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Hilliard Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 47.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM50.0 ROCKWELL C MAXIMUM |
| Outside Diameter | 3.625 INCHES MINIMUM AND 3.625 INCHES MINIMUM AND 3.633 INCHES MAXIMUM3.633 INCHES MAXIMUM IN |
| Material Thickness | 0.0615 INCHES MINIMUM AND 0.0615 INCHES MINIMUM AND 0.0635 INCHES MAXIMUM0.0635 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1090 OVERALL |
| Hole Diameter | 2.062 INCHES MINIMUM AND 2.062 INCHES MINIMUM AND 2.070 INCHES MAXIMUM2.070 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 |
|---|---|
| 8437167-12 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| L4-35-312U PRIMARY | The Hilliard Corp (USA) |
| Reference | Meaning |
|---|---|
| 5310010332343 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-01-033-2343 is a Washer,spring Tension, manufactured by The Hilliard Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-033-2343 has 2 manufacturer part numbers on file: 8437167-12 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), L4-35-312U (The Hilliard Corp).
Key specifications for L4-35-312U: Overall Height: 0.1565 INCHES MINIMUM AND 0.1565 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM0.1635 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM50.0 ROCKWELL C MAXIMUM; Outside Diameter: 3.625 INCHES MINIMUM AND 3.625 INCHES MINIMUM AND 3.633 INCHES MAXIMUM3.633 INCHES MAXIMUM 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.