The Bearing,plain,rod End, cataloged under National Stock Number 3120-01-587-3871, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-587-3871 |
| Primary Part Number | MS21429-5K |
| Item Name | Bearing,plain,rod End |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Shank Thread Length | 1.7500 INCHES NOMINAL IN |
| Bore Center to Shank End Distance | 2.8100 INCHES NOMINAL IN |
| Inner Member Width | 0.8120 INCHES NOMINAL IN |
| Outer Member Width | 0.6650 INCHES NOMINAL IN |
| Style Designator | BALL TYPE |
| Thread Diameter | 0.500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Shank Style | EXTERNALLY THREADED |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Bore Diameter | 0.3125 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Outer Member Outside Diameter | 1.4400 INCHES NOMINAL IN |
| 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 |
|---|---|
| MS21429-5K | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| MS21429-5K PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS8952 | 7/1 Vendor item drawing reference Sae International Dba Sae International |
| SAE-AS8952 | 7/9 Vendor item drawing reference U.S. Government activity |
| MS21429-5K | 5/9 Secondary reference U.S. Government activity |
NSN 3120-01-587-3871 is a Bearing,plain,rod End, manufactured by Sae International Dba Sae International, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-587-3871 has 2 manufacturer part numbers on file: MS21429-5K (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), MS21429-5K (Sae International Dba Sae International).
Key specifications for MS21429-5K: Shank Thread Length: 1.7500 INCHES NOMINAL IN; Bore Center to Shank End Distance: 2.8100 INCHES NOMINAL IN; Inner Member Width: 0.8120 INCHES NOMINAL IN; Outer Member Width: 0.6650 INCHES NOMINAL IN. 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.