The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-255-7452, 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 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-255-7452 |
| Primary Part Number | 12349971 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE |
| Design Type | SOLID |
| Material Document and Classification | ASTM 575,GRADE 1010 OR 1012 OR 1015 OR 1017 OR 1020 OR 1025 ASSN STD ALL MATERIAL RESPONSES OR ASTM 576,GRADE 1010 OR 1012 OR 1015 OR 1017 OR 1018 OR 1019 OR 1020 OR 1021 OR 1022 OR 1025 ASSN STD ALL MATERIAL RESPONSES |
| Surface Treatment | CADMIUM AND CHROMATE |
| Bore Diameter | 0.2500 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1025 |
| 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 |
|---|---|
| 12349971 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5340012557452 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 12349971 | 8/1 NATO reproduction reference Fnss Savunma Sistemleri Anonim Sirketi |
NSN 5340-01-255-7452 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 5340-01-255-7452 has 1 manufacturer part number on file: 12349971 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12349971: Overall Height: 0.5400 INCHES MINIMUM AND 0.5600 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE; Design Type: SOLID; Material Document and Classification: ASTM 575,GRADE 1010 OR 1012 OR 1015 OR 1017 OR 1020 OR 1025 ASSN STD ALL MATERIAL RESPONSES OR ASTM 576,GRADE 1010 OR 1012 OR 1015 OR 1017 OR 1018 OR 1019 OR 1020 OR 1021 OR 1022 OR 1025 ASSN STD ALL MATERIAL RESPONSES. 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.