The Connecting Link,rigid, cataloged under National Stock Number 3040-01-256-7953, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-256-7953 |
| Primary Part Number | HSLK4-6 |
| Item Name | Connecting Link,rigid |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| Body Construction | TUBULAR |
| Link Style | EYE ENDS |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HSLK4-6 PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| AMSCBDOC | Defense Logistics Agency (USA) |
| Reference | Meaning |
|---|---|
| HSLK4-8 | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| 214-010-715-105 | 3/2 Design control — primary reference U.S. Government activity |
| 214-010-715 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-256-7953 is a Connecting Link,rigid, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-256-7953 has 2 manufacturer part numbers on file: HSLK4-6 (New Hampshire Ball Bearings Inc Div Astro Division), AMSCBDOC (Defense Logistics Agency).
Key specifications for HSLK4-6: Body Construction: TUBULAR; Link Style: EYE ENDS; End Item Identification: H-1 ACFT; Material: STEEL. 3 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.
NSN 3040-01-256-7953 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.