The Turnbuckle, cataloged under National Stock Number 5340-01-579-8645, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 19 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.
| Parameter | Value |
|---|---|
| NSN | 5340-01-579-8645 |
| Primary Part Number | 1031519 |
| Item Name | Turnbuckle |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Take-Up Distance | 12.000 INCHES NOMINAL IN |
| Eye Width | 12.000 INCHES NOMINAL IN |
| Length | 12.160 INCHES MINIMUM AND 18.160 INCHES MAXIMUM IN |
| Body Style | ROUND OPEN BODY |
| End Style | CLOSED EYE AND CLOSED EYE |
| Thread Length | 12.000 INCHES NOMINAL BUSHING IN |
| Material Document and Classification | FF-T-791B,TYPE 1,CLASS4 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND BUSHING |
| Thread Direction | RIGHT-HAND END PULL |
| Nominal Thread Size | 0.875 INCHES BUSHING IN |
| Nominal Thread Size | 0.880 INCHES END PULL IN |
| Body Length | 12.000 INCHES NOMINAL IN |
| Thread Class | 1A BUSHING A |
| Thread Class | 1A END PULL A |
| Thread Quantity Per Inch | 14 END PULL |
| Thread Quantity Per Inch | 9 BUSHING |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) BUSHING |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) END PULL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1031519 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
NSN 5340-01-579-8645 is a Turnbuckle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-579-8645 has 1 manufacturer part number on file: 1031519 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for 1031519: Take-Up Distance: 12.000 INCHES NOMINAL IN; Eye Width: 12.000 INCHES NOMINAL IN; Length: 12.160 INCHES MINIMUM AND 18.160 INCHES MAXIMUM IN; Body Style: ROUND OPEN BODY. 19 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.