The Shackle, cataloged under National Stock Number 4030-01-185-3747, is classified within Federal Supply Class 4030 (Fittings for Rope, Cable, and Chain) of the Rope, Cable, Chain, and Fittings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4030-01-185-3747 |
| Item Name | Shackle |
| FSC / FSG | 4030 / 40 — Fittings for Rope, Cable, and Chain |
| Status | ACTIVE |
| Style Designator | WIRE ROPE |
| Opening Width | 0.257 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Eyelet Style | ROUND PLAIN |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE |
| Distance From Bail Center to Hole Center | 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN |
| Inside Diameter | 0.375 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN |
| Eye Inside Diameter | 0.313 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN |
| Leg End Thickness | 0.142 INCHES NOMINAL IN |
| Minor Diameter | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY |
| Major Diameter | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Breaking Strength | 200.0 HARNESS GROUP 4 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-DTL-5675 | 4/1 Identification reference U.S. Government activity |
| MS20115K6 | 2/2 Government specification standardization U.S. Government activity |
| MS20115K6 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4030-01-185-3747 is a Shackle, classified under FSC 4030, Fittings for Rope, Cable, and Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4030-01-255-0300, 4030-01-255-0301. Verify interchangeability with system specifications before substitution.
Key specifications for 4030-01-185-3747: Style Designator: WIRE ROPE; Opening Width: 0.257 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN; Eyelet Style: ROUND PLAIN; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE. 12 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.