The Shackle, cataloged under National Stock Number 4030-01-473-3278, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4030-01-473-3278 |
| Primary Part Number | 12355173-3 |
| 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 | 1.687 INCHES NOMINAL IN |
| End Condition | THREADED |
| Material Diameter | 0.440 INCHES NOMINAL IN |
| Style Designator | ANCHOR |
| Opening Width | 0.719 INCHES NOMINAL IN |
| Eyelet Style | ROUND PLAIN |
| Material Document and Classification | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE |
| Safe Operating Load Rating | 3000.000 POUNDS MINIMUM LBS |
| Specification/standard Data | 81348-RR-C-271 GOVERNMENT SPECIFICATION |
| Departure From Cited Document | 3000 LBS. MIN.SAFE WORKING LOAD LBS |
| Nondefinitive Spec/std Data | 4A TYPE AND 2 CLASS AND B GRADE A |
| Surface Treatment | ZINC |
| Eye Inside Diameter | 0.594 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 12355173-3 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| RR-C-271 | 4/1 Identification reference U.S. Government activity |
| 12355173 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4030-01-473-3278 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 4030-01-473-3278 has 1 manufacturer part number on file: 12355173-3 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 4030-01-473-3374. Verify interchangeability with system specifications before substitution.
Key specifications for 12355173-3: Inside Length: 1.687 INCHES NOMINAL IN; End Condition: THREADED; Material Diameter: 0.440 INCHES NOMINAL IN; Style Designator: ANCHOR. 14 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.