The Clip,spring Tension, cataloged under National Stock Number 5340-00-021-4718, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-021-4718 |
| Primary Part Number | 549-5504-002 |
| 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 | 0.500 INCHES NOMINAL IN |
| Loop Width | 0.066 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) |
| Material Document and Classification | QQ-B-613,ALLOY 260,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Loop/holding Dimension | 0.025 INCHES NOMINAL IN |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| Smallest Width | 0.359 INCHES NOMINAL IN |
| Loop Opening Width | 0.063 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Width | 0.390 INCHES NOMINAL IN |
| Material | COPPER ALLOY 260 OVERALL |
| Hole Diameter | 0.100 INCHES NOMINAL IN |
| 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 | EA |
| Part Number | Manufacturer |
|---|---|
| 549-5504-002 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 549-5504-002 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-00-021-4718 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 5340-00-021-4718 has 1 manufacturer part number on file: 549-5504-002 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 549-5504-002: Length: 0.500 INCHES NOMINAL IN; Loop Width: 0.066 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S); Material Document and Classification: QQ-B-613,ALLOY 260,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.