The Turnbuckle, cataloged under National Stock Number 5340-00-234-6963, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-234-6963 |
| Item Name | Turnbuckle |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Accommodated Wire Rope Diameter | 0.375 INCHES NOMINAL IN |
| Take-Up Distance | 6.000 INCHES NOMINAL IN |
| Length | 16.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | ROUND OPEN BODY |
| End Style | WERE ROPE SOCKET AND CLEVIS |
| Wire Rope Retention Method | SOLID WEDGE |
| Locking Device Type | NUT |
| Nominal Thread Size | 0.625 INCHES BODY IN |
| Body Length | 7.875 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 CLASS AND 2 FORM AND 2 TYPE |
| Fork Width | 0.750 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Pinhole Diameter | 0.515 INCHES NOMINAL IN |
| Thread Class | 1A BODY A |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| MIL-S-21433 | 4/1 Identification reference U.S. Government activity |
| MILS21433TYPE2CLASSBF0RM2 | 5/9 Secondary reference U.S. Government activity |
| M21433 TYII CLB FM2 16.000 | 2/2 Government specification standardization U.S. Government activity |
NSN 5340-00-234-6963 is a Turnbuckle, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-234-6963: Accommodated Wire Rope Diameter: 0.375 INCHES NOMINAL IN; Take-Up Distance: 6.000 INCHES NOMINAL IN; Length: 16.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.