The Stud,recessed and Stepped, cataloged under National Stock Number 5307-00-303-4989, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5307-00-303-4989 |
| Primary Part Number | 20X359 |
| Item Name | Stud,recessed and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Thread Length | 0.938 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 1.219 INCHES MINIMUM NUT THREAD IN |
| Hardness Rating | 18.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM |
| Thread Pitch Diameters | +0.7044 TO 0.7084 INCHES STUD THREAD IN |
| Thread Pitch Diameters | +1.0764 TO 1.0804 INCHES NUT THREAD IN |
| Thread Direction | LEFT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.750 INCHES STUD THREAD IN |
| Nominal Thread Size | 1.125 INCHES NUT THREAD IN |
| Thread Quantity Per Inch | 16 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL |
| Thread Series Designator | UNF STUD THREAD |
| Thread Series Designator | UN NUT THREAD |
| 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 |
|---|---|
| 20X359 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 35090 | 5/9 Secondary reference Alliedsignal Inc Alliedsignal Braking Systems-Wheel End Products |
| 11A6842 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-00-303-4989 is a Stud,recessed and Stepped, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-303-4989 has 1 manufacturer part number on file: 20X359 (Meritor Heavy Vehicle Systems, Llc).
4 possible matches (shared part number, not a government interchangeability claim): 2835-01-079-8665, 3455-01-397-6763, 6680-01-534-8353. Verify interchangeability with system specifications before substitution.
Key specifications for 20X359: Thread Length: 0.938 INCHES MAXIMUM STUD THREAD IN; Thread Length: 1.219 INCHES MINIMUM NUT THREAD IN; Hardness Rating: 18.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MAXIMUM; Thread Pitch Diameters: +0.7044 TO 0.7084 INCHES STUD THREAD 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.