The Turnbuckle, cataloged under National Stock Number 5340-00-477-3900, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-477-3900 |
| Item Name | Turnbuckle |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 LOCKNUT AND 1 CLEVIS AND 1 EYEBOLT |
| Take-Up Distance | 6.000 INCHES NOMINAL IN |
| Eye Width | 0.812 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | HEX OPEN BODY |
| End Style | CLEVIS AND CLOSED EYE |
| Material Document and Classification | QQ-I-666,UNS F222000 FED SPEC 1ST MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-I-666,UNS F222000 FED SPEC 1ST MATERIAL RESPONSE END PULL |
| Locking Device Type | NUT |
| Nominal Thread Size | 0.375 INCHES BODY IN |
| Body Length | 7.500 INCHES NOMINAL IN |
| Fork Width | 0.500 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Pinhole Diameter | 0.312 INCHES NOMINAL IN |
| Thread Class | 2B BODY |
| Material | IRON CAST UNS F22200 OR STEEL END PULL |
| Material | IRON CAST UNS F22200 BODY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) BODY |
| 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 |
|---|---|
| SMD114379 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-477-3900 is a Turnbuckle, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-477-3900: Furnished Items and Quantity: 2 LOCKNUT AND 1 CLEVIS AND 1 EYEBOLT; Take-Up Distance: 6.000 INCHES NOMINAL IN; Eye Width: 0.812 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.