The Bearing,plain,rod End, cataloged under National Stock Number 3120-01-644-0591, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Midwest Control Products Corp. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-644-0591 |
| Primary Part Number | MSM-6 |
| Item Name | Bearing,plain,rod End |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Midwest Control Products Corp |
| Status | ACTIVE |
| Shank Thread Length | 1.1900 INCHES NOMINAL IN |
| Bore Center to Shank End Distance | 1.9400 INCHES NOMINAL IN |
| Inner Member Width | 0.5000 INCHES NOMINAL IN |
| Outer Member Width | 0.4100 INCHES NOMINAL IN |
| Style Designator | SHOULDERED FLANGE TYPE |
| Shank End to Shoulder Length | 1.1900 INCHES NOMINAL IN |
| Thread Diameter | 0.375 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Shank Style | EXTERNALLY THREADED |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Bore Diameter | 0.3750 INCHES NOMINAL IN |
| Thread Series Designator | UNF |
| Outer Member Outside Diameter | 1.0100 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 |
|---|---|
| ACM6 | Aetna Screw Products Co (USA) |
| MSM-6 PRIMARY | Midwest Control Products Corp (USA) |
| 12578365-4 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3120-01-644-0591 is a Bearing,plain,rod End, manufactured by Midwest Control Products Corp, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-644-0591 has 3 manufacturer part numbers on file: ACM6 (Aetna Screw Products Co), MSM-6 (Midwest Control Products Corp), 12578365-4 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for MSM-6: Shank Thread Length: 1.1900 INCHES NOMINAL IN; Bore Center to Shank End Distance: 1.9400 INCHES NOMINAL IN; Inner Member Width: 0.5000 INCHES NOMINAL IN; Outer Member Width: 0.4100 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.