The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-274-5837, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-274-5837 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| End Diameter | 0.3200 INCHES MINIMUM AND 0.3400 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Material Document and Classification | MIL-S-7720, COMP 302 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-7720, COMP 303S, COND B MIL SPEC 2ND MATERIAL RESPONSE AND QQ-S-763, CLASS 302 FED SPEC 3RD MATERIAL RESPONSE AND QQ-S-763, CLASS 304L FED SPEC 4TH MATERIAL RESPONSE AND QQ-S-763, CLASS 304 FED SPEC 5TH MATERIAL RESPONSE AND QQ-S-763, CLASS 305 FED SPEC 6TH MATERIAL RESPONSE AND QQ-S-763, CLASS 309 FED SPEC 7TH MATERIAL RESPONSE AND QQ-S-763, CLASS 310 FED SPEC 8TH MATERIAL RESPONSE AND QQ-S-763, CLASS 316L FED SPEC 9TH MATERIAL RESPONSE AND QQ-S-763, CLASS 316 FED SPEC 10TH MATERIAL RESPONSE AND QQ-S-763, CLASS 317 FED SPEC 11TH MATERIAL RESPONSE AND QQ-S-763, CLASS 321 FED SPEC 12TH MATERIAL RESPONSE AND QQ-S-763, CLASS 347 FED SPEC 13TH MATERIAL RESPONSE |
| Counterbore Length | 0.0600 INCHES MINIMUM AND 0.0700 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.2400 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Bore Diameter | 0.0400 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304L OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316L OR STEEL COMP 316 OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 |
| 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 |
| Reference | Meaning |
|---|---|
| S9405-42 | 3/2 Design control — primary reference U.S. Government activity |
| 10113072 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5340-01-274-5837 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-274-5837: Overall Height: 0.1000 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN; End Diameter: 0.3200 INCHES MINIMUM AND 0.3400 INCHES MAXIMUM IN; Design Type: SOLID; Material Document and Classification: MIL-S-7720, COMP 302 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-7720, COMP 303S, COND B MIL SPEC 2ND MATERIAL RESPONSE AND QQ-S-763, CLASS 302 FED SPEC 3RD MATERIAL RESPONSE AND QQ-S-763, CLASS 304L FED SPEC 4TH MATERIAL RESPONSE AND QQ-S-763, CLASS 304 FED SPEC 5TH MATERIAL RESPONSE AND QQ-S-763, CLASS 305 FED SPEC 6TH MATERIAL RESPONSE AND QQ-S-763, CLASS 309 FED SPEC 7TH MATERIAL RESPONSE AND QQ-S-763, CLASS 310 FED SPEC 8TH MATERIAL RESPONSE AND QQ-S-763, CLASS 316L FED SPEC 9TH MATERIAL RESPONSE AND QQ-S-763, CLASS 316 FED SPEC 10TH MATERIAL RESPONSE AND QQ-S-763, CLASS 317 FED SPEC 11TH MATERIAL RESPONSE AND QQ-S-763, CLASS 321 FED SPEC 12TH MATERIAL RESPONSE AND QQ-S-763, CLASS 347 FED SPEC 13TH MATERIAL RESPONSE. 7 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.