The Turnbuckle, cataloged under National Stock Number 5340-01-283-4056, 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 16 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-283-4056 |
| Primary Part Number | HG-228-1-1/2X12 |
| 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 |
| Length | 15.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM A 153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | ROUND OPEN BODY |
| End Style | CLEVIS AND CLEVIS |
| Thread Length | 12.000 INCHES NOMINAL BODY IN |
| Material Document and Classification | ASTM F-1145 ASSN STD 1ST MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND BODY |
| Nominal Thread Size | 1.500 INCHES BODY IN |
| Body Length | 15.740 INCHES NOMINAL IN |
| Fork Width | 2.250 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Pinhole Diameter | 1.500 INCHES NOMINAL IN |
| Thread Class | UNS BODY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 1382L10023 ITEM 11 | Babcock International Group Plc (GBR) |
| 1032938 | The Crosby Group Llc Dba the Crosby Group (USA) |
| 1382A10052-11 | Babcock International Group Plc (GBR) |
| HG-228-1-1/2X12 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
| 40048034 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| 1032938 | Crosby Europe (uk) (GBR) |
| Reference | Meaning |
|---|---|
| HG-228 | 5/1 Secondary reference The Crosby Group Llc Dba the Crosby Group |
NSN 5340-01-283-4056 is a Turnbuckle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-283-4056 has 6 manufacturer part numbers on file: 1382L10023 ITEM 11 (Babcock International Group Plc), 1032938 (The Crosby Group Llc Dba the Crosby Group), 1382A10052-11 (Babcock International Group Plc), HG-228-1-1/2X12 (The Crosby Group Llc Dba the Crosby Group), 40048034 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5998-01-530-5765. Verify interchangeability with system specifications before substitution.
Key specifications for HG-228-1-1/2X12: Take-Up Distance: 12.000 INCHES NOMINAL IN; Length: 15.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM A 153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Body Style: ROUND OPEN BODY. 16 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.