The Link,chain,connecting, cataloged under National Stock Number 4010-01-136-5409, is classified within Federal Supply Class 4010 (Chain and Wire Rope) of the Rope, Cable, Chain, and Fittings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4010-01-136-5409 |
| Primary Part Number | ST9M474-8 |
| Item Name | Link,chain,connecting |
| FSC / FSG | 4010 / 40 — Chain and Wire Rope |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Inside Length | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN |
| Material Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Major Inside Width | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Style Designator | PEAR SHAPED |
| Minor Inside Width | 0.680 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN |
| Surface Treatment | ZINC |
| 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 |
NSN 4010-01-136-5409 is a Link,chain,connecting, manufactured by The Boeing Company Div Defense, classified under FSC 4010, Chain and Wire Rope. Status: active.
NSN 4010-01-136-5409 has 3 manufacturer part numbers on file: ST9M474-8 (The Boeing Company Div Defense), G334-1/2 (The Crosby Group Llc Dba the Crosby Group), 10-13450 (The Crosby Group Llc Dba the Crosby Group).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-566-1073. Verify interchangeability with system specifications before substitution.
Key specifications for ST9M474-8: Inside Length: 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN; Material Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Major Inside Width: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN; Style Designator: PEAR SHAPED. 7 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.