The Clip,spring Tension, cataloged under National Stock Number 5340-01-072-2520, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: HD.
| Parameter | Value |
|---|---|
| NSN | 5340-01-072-2520 |
| Primary Part Number | 139-3522-110 |
| Item Name | Clip,spring Tension |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Length | 1.150 INCHES MINIMUM AND 1.170 INCHES MAXIMUM IN |
| Loop/holding Dimension | 1.125 INCHES NOMINAL IN |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Width | 0.625 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | HD |
| Part Number | Manufacturer |
|---|---|
| 139-3522-110 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 6021-6A | Te Connectivity Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6021-6A | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-072-2520 is a Clip,spring Tension, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-072-2520 has 2 manufacturer part numbers on file: 139-3522-110 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 6021-6A (Te Connectivity Corporation).
Key specifications for 139-3522-110: Overall Height: 1.325 INCHES NOMINAL IN; Length: 1.150 INCHES MINIMUM AND 1.170 INCHES MAXIMUM IN; Loop/holding Dimension: 1.125 INCHES NOMINAL IN; Material Thickness: 0.020 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.