The Hook,release, cataloged under National Stock Number 4030-01-643-5077, 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 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4030-01-643-5077 |
| Primary Part Number | 12578085 |
| Item Name | Hook,release |
| FSC / FSG | 4030 / 40 — Fittings for Rope, Cable, and Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Material Document and Classification | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL COMP 4130 |
| 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 |
|---|---|
| 12578085 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 4030-01-643-5077 is a Hook,release, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4030, Fittings for Rope, Cable, and Chain. Status: active.
NSN 4030-01-643-5077 has 1 manufacturer part number on file: 12578085 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12578085: Material Document and Classification: ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE; Special Features: PROTECTIVE FINISH PER 19207-12577737 PARAGRAPH 2.1. HOOK HAS (1) .156 INCH DIAMETER THRU HOLE AND (1) .431 INCH DIAMETER THRU HOLE. HAS ROCKWELL C HARDNESS OF 30 - 35. COLOR IS TAN 686A, CHIP NUMBER 33446 PER FED-STD-595. HAS A MAXIMUM WIDTH OF 2 INCHES. A; Part Name Assigned by Controlling Agency: CATCH, LATCH; End Item Identification: 2350-01-577-0830. 2 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.