The Stopper Assembly,chain, cataloged under National Stock Number 2040-00-190-6904, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 2040-00-190-6904 |
| Item Name | Stopper Assembly,chain |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Status | ACTIVE |
| Stud Link Chain Size for Which Designed | 2.375 INCHES NOMINAL IN |
| Stud Link Chain Size for Which Designed | 2.125 INCHES NOMINAL IN |
| Stud Link Chain Size for Which Designed | 2.250 INCHES NOMINAL IN |
| Adjustment Wrench | NOT INCLUDED |
| Turnbuckle Locking Plate | NOT INCLUDED |
| Takeup | 10.500 INCHES MAXIMUM IN |
| Component and Quantity | HOOK,PELICAN 1,LINKS,DETACHABLE 4,SHACKLE,SCREW PIN 1,TURNBUCKLE 1 |
| Minimum Length Between Shackle Pin Centerline and Pelican Hook Centerline | 77.625 INCHES IN |
| Maximum Length Between Shackle Pin Centerline and Pelican Hook Centerline | 88.125 INCHES IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY STUD LINK CHAIN SIZE FOR WHICH DESIGNED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S2605-860000 | 3/1 Design control — primary reference U.S. Government activity |
| PELIKAN HOOK CHAIN 2-1/8TO2-3/8 | 5/2 Secondary reference U.S. Government activity |
| CHAIN STOPPER 2-1/8 TO 2-3/8 IN | 5/9 Secondary reference Blue Ocean Tackle Inc. |
NSN 2040-00-190-6904 is a Stopper Assembly,chain, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 2040-00-190-6905, 2040-00-190-6906, 2040-00-190-6907. Verify interchangeability with system specifications before substitution.
Key specifications for 2040-00-190-6904: Stud Link Chain Size for Which Designed: 2.375 INCHES NOMINAL IN; Stud Link Chain Size for Which Designed: 2.125 INCHES NOMINAL IN; Stud Link Chain Size for Which Designed: 2.250 INCHES NOMINAL IN; Adjustment Wrench: NOT INCLUDED. 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.