The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-079-4800, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-079-4800 |
| Primary Part Number | 23010693 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Countersink Angle in Deg | 90.0 |
| First Step Diameter | 1.4400 INCHES NOMINAL IN |
| Material Hardness Rating | 50.0 ROCKWELL C NOMINAL |
| End Diameter | 1.0000 INCHES NOMINAL IN |
| Countersink Diameter | 0.2810 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1200 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | QQ-S-637, COMP 1118 FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | CASEHARDENED |
| Bore Diameter | 0.2290 INCHES MINIMUM AND 0.2390 INCHES MAXIMUM IN |
| Material | STEEL COMP 1118 |
| 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 |
NSN 5340-01-079-4800 is a Seat,helical Compression Spring, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-079-4800 has 3 manufacturer part numbers on file: 23010693 (Allison Transmission Inc Dba Allison Transmission, Inc), DAX12586 (Allison Transmission Inc Dba Allison Transmission, Inc), 12267423 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 23010693: Overall Height: 0.2600 INCHES NOMINAL IN; Countersink Angle in Deg: 90.0; First Step Diameter: 1.4400 INCHES NOMINAL IN; Material Hardness Rating: 50.0 ROCKWELL C NOMINAL. 12 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.