The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-041-6839, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Breeze-Eastern Llc. Government technical data includes 10 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-041-6839 |
| Primary Part Number | BL-8923 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| First Step Diameter | 2.1250 INCHES NOMINAL IN |
| Material Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| End Diameter | 1.3800 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance From End to First Step | 0.0940 INCHES NOMINAL IN |
| Design Type | SOLID |
| Material Document and Classification | MIL-S-5000, COMP E4340 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | CADMIUM AND CHROMATE |
| Bore Diameter | 1.2500 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN |
| Material | STEEL COMP E4340 |
| 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 |
|---|---|
| BL-8923 PRIMARY | Breeze-Eastern Llc (USA) |
NSN 5340-01-041-6839 is a Seat,helical Compression Spring, manufactured by Breeze-Eastern Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-041-6839 has 1 manufacturer part number on file: BL-8923 (Breeze-Eastern Llc).
Key specifications for BL-8923: Overall Height: 0.3120 INCHES NOMINAL IN; First Step Diameter: 2.1250 INCHES NOMINAL IN; Material Hardness Rating: 28.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM; End Diameter: 1.3800 INCHES NOMINAL IN. 10 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.