The Shaft,straight, cataloged under National Stock Number 3040-01-284-6153, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-284-6153 |
| Primary Part Number | A6-12 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Surface Finish | 8.0 MICROINCHES |
| First End Diameter | 0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 303 |
| 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 |
|---|---|
| US3-10 | Designatronics Incorporated Div Sterling Instruments Div (USA) |
| A6-12 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| SS237 PRIMARY | Secs Inc (USA) |
| GS-3020 | Southern Gear & Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| S4-12-U | 5/9 Secondary reference W. M. Berg, Inc. |
| 219 | 5/9 Secondary reference Allied Devices Corp Dba Absolute Precision Co |
NSN 3040-01-284-6153 is a Shaft,straight, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-284-6153 has 4 manufacturer part numbers on file: US3-10 (Designatronics Incorporated Div Sterling Instruments Div), A6-12 (Roller Bearing Co of America, Inc Div Pic Design), SS237 (Secs Inc), GS-3020 (Southern Gear & Machine Inc).
2 possible matches (shared part number, not a government interchangeability claim): 6210-01-391-8747, 6650-01-513-0493. Verify interchangeability with system specifications before substitution.
Key specifications for A6-12: Surface Finish: 8.0 MICROINCHES; First End Diameter: 0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN; First End Style: PLAIN; Overall Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN. 5 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.