The Shackle, cataloged under National Stock Number 4030-00-533-3900, is classified within Federal Supply Class 4030 (Fittings for Rope, Cable, and Chain) of the Rope, Cable, Chain, and Fittings group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4030-00-533-3900 |
| Primary Part Number | 1018534 |
| Item Name | Shackle |
| FSC / FSG | 4030 / 40 — Fittings for Rope, Cable, and Chain |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM A153 ASSN STD 1ST TREATMENT RESPONSE AND MIL-T-12879,TYPE I,CLASS 2 MIL SPEC 2ND TREATMENT RESPONSE AND TT-P-666 FED SPEC 3RD TREATMENT RESPONSE AND TT-E-529 FED SPEC 4TH TREATMENT RESPONSE |
| Inside Length | 3.500 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN |
| End Condition | THREADED |
| Material Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | ANTITOPPLING |
| Opening Width | 1.625 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Locking Device Type | PIN |
| Closure Head Style | SHOULDER EYE |
| Surface Treatment | ZINC AND CHROMATE ZINC AND PRIMER AND ENAMEL |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1018534 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
| 8387707-1 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4030005333900 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 8387707 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4030-00-533-3900 is a Shackle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 4030, Fittings for Rope, Cable, and Chain. Status: active.
NSN 4030-00-533-3900 has 2 manufacturer part numbers on file: 1018534 (The Crosby Group Llc Dba the Crosby Group), 8387707-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
2 possible matches (shared part number, not a government interchangeability claim): 6605-01-318-2517, 4030-01-499-3213. Verify interchangeability with system specifications before substitution.
Key specifications for 1018534: Surface Treatment Document and Classification: ASTM A153 ASSN STD 1ST TREATMENT RESPONSE AND MIL-T-12879,TYPE I,CLASS 2 MIL SPEC 2ND TREATMENT RESPONSE AND TT-P-666 FED SPEC 3RD TREATMENT RESPONSE AND TT-E-529 FED SPEC 4TH TREATMENT RESPONSE; Inside Length: 3.500 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN; End Condition: THREADED; Material Diameter: 1.000 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.