The Stud,recessed, cataloged under National Stock Number 5307-00-246-5028, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-00-246-5028 |
| Primary Part Number | AL12428 |
| Item Name | Stud,recessed |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Cotter Pin Hole Diameter | 0.219 INCHES NOMINAL FIRST HOLE IN |
| Thread Length | 1.375 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 2.625 INCHES NOMINAL STUD THREAD IN |
| Style Designator | RECESSED |
| Diameter of Recessed Portion of Shank | 1.062 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 1.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 1.250 INCHES STUD THREAD IN |
| Length of Recessed Portion of Shank | 4.500 INCHES NOMINAL IN |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 12 STUD THREAD |
| Thread Quantity Per Inch | 12 NUT THREAD |
| Thread Series Designator | UNF STUD THREAD |
| Thread Series Designator | UNF NUT THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.250 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| AL12428 | Curtis Engine & Equipment Company, Inc. Dba Curtis Engine & Equipment (USA) |
| AL12428 PRIMARY | Fairbanks Morse, Llc (USA) |
| AL12428 | Man Diesel & Turbo Ltd (GBR) |
| Reference | Meaning |
|---|---|
| AL12428 | 3/9 Design control — primary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 5307-00-246-5028 is a Stud,recessed, manufactured by Fairbanks Morse, Llc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-246-5028 has 3 manufacturer part numbers on file: AL12428 (Curtis Engine & Equipment Company, Inc. Dba Curtis Engine & Equipment), AL12428 (Fairbanks Morse, Llc), AL12428 (Man Diesel & Turbo Ltd).
Key specifications for AL12428: Cotter Pin Hole Diameter: 0.219 INCHES NOMINAL FIRST HOLE IN; Thread Length: 1.375 INCHES NOMINAL NUT THREAD IN; Thread Length: 2.625 INCHES NOMINAL STUD THREAD IN; Style Designator: RECESSED. 17 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.