The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-664-7445, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 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 | 5340-01-664-7445 |
| Primary Part Number | 12510622 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Material Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| End Diameter | 2.480 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | SAE J403 NATIONAL STD SINGLE TREATMENT RESPONSE |
| Material Document and Classification | SAE 1075 NATIONAL STD SINGLE MATERIAL RESPONSE |
| Bore Diameter | 1.820 INCHES MINIMUM AND 1.840 INCHES MAXIMUM 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 |
|---|---|
| 12510622 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5340-01-664-7445 is a Seat,helical Compression Spring, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-664-7445 has 1 manufacturer part number on file: 12510622 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12510622: Material Hardness Rating: 42.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM; End Diameter: 2.480 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: SAE J403 NATIONAL STD SINGLE TREATMENT RESPONSE; Material Document and Classification: SAE 1075 NATIONAL STD SINGLE MATERIAL RESPONSE. 5 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.