The Shackle, cataloged under National Stock Number 4030-00-171-4522, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4030-00-171-4522 |
| Primary Part Number | 7357970 |
| Item Name | Shackle |
| FSC / FSG | 4030 / 40 — Fittings for Rope, Cable, and Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Inside Length | 4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN |
| End Condition | PLAIN |
| Material Diameter | 1.250 INCHES NOMINAL IN |
| Style Designator | ANCHOR |
| Opening Width | 1.937 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN |
| Locking Device Type | COTTER PIN |
| Features Provided | RETAINING CHAIN |
| Closure Head Style | FLAT |
| Material | STEEL |
| Breaking Strength | ERR-060 |
| 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 |
|---|---|
| 7357970 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| RRC271TYPE4CLASS4 | 4/1 Identification reference U.S. Government activity |
| 7357960 | 5/1 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| RRC271TYPEGCLASSB1 | 4/1 Identification reference U.S. Government activity |
NSN 4030-00-171-4522 is a Shackle, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4030, Fittings for Rope, Cable, and Chain. Status: active.
NSN 4030-00-171-4522 has 1 manufacturer part number on file: 7357970 (U S Army Tank Automotive Command Amsta-Im-Mm).
6 possible matches (shared part number, not a government interchangeability claim): 4030-00-290-4362, 4030-00-318-0326, 4030-00-675-9029. Verify interchangeability with system specifications before substitution.
Key specifications for 7357970: Inside Length: 4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN; End Condition: PLAIN; Material Diameter: 1.250 INCHES NOMINAL IN; Style Designator: ANCHOR. 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.