The Bearing,plain,rod End, cataloged under National Stock Number 3120-01-252-8031, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-252-8031 |
| Primary Part Number | 12328984 |
| Item Name | Bearing,plain,rod End |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shank Thread Length | 1.0620 INCHES MINIMUM IN |
| Surface Treatment Document and Classification | QQ-C-320,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE INNER MEMBER |
| Surface Treatment Document and Classification | QQ-Z-325,TYPE 1 OR 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TYPE 1 OR 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE ROD END BODY |
| Bore Center to Shank End Distance | 1.8430 INCHES MINIMUM AND 1.9070 INCHES MAXIMUM IN |
| Inner Member Width | 0.4320 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM INNER MEMBER |
| Outer Member Width | 0.3220 INCHES MINIMUM AND 0.3480 INCHES MAXIMUM IN |
| Style Designator | BALL TYPE |
| Thread Diameter | 0.3125 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OR ASTMA 576 ASSN STD ALL MATERIAL RESPONSES ROD END BODY |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS-6440 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER |
| Thread Direction | RIGHT-HAND |
| Shank Style | EXTERNALLY THREADED |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Surface Treatment | ZINC AND CHROMATE OR CADMIUM OR CADMIUM AND CHROMATE ROD END BODY |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Static Radial Load Rating | 2500 POUNDS LBS |
| Bore Diameter | 0.3120 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 INNER MEMBER |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1029 OR STEEL COMP 1030 ROD END BODY |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 310 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 440C RACE INSERT |
| Thread Series Designator | UNF |
| Outer Member Outside Diameter | 0.8600 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM 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 |
|---|---|
| 12328984 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3120-01-252-8031 is a Bearing,plain,rod End, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-252-8031 has 1 manufacturer part number on file: 12328984 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12328984: Shank Thread Length: 1.0620 INCHES MINIMUM IN; Surface Treatment Document and Classification: QQ-C-320,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE INNER MEMBER; Surface Treatment Document and Classification: QQ-Z-325,TYPE 1 OR 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TYPE 1 OR 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE ROD END BODY; Bore Center to Shank End Distance: 1.8430 INCHES MINIMUM AND 1.9070 INCHES MAXIMUM IN. 24 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.