The Stud,shouldered, cataloged under National Stock Number 5307-00-353-0491, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Hme, Inc. Dba Hme Ahrens-Fox. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5307-00-353-0491 |
| Primary Part Number | 20X151 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Hme, Inc. Dba Hme Ahrens-Fox |
| Status | ACTIVE |
| Thread Length | 0.440 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 1.220 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SHOULDERED |
| Thread Direction | LEFT-HAND NUT THREAD |
| Thread Direction | LEFT-HAND STUD THREAD |
| Nominal Thread Size | 0.750 INCHES STUD THREAD IN |
| Nominal Thread Size | 1.125 INCHES NUT THREAD IN |
| Shoulder Diameter | 1.120 INCHES MINIMUM AND 1.210 INCHES MAXIMUM IN |
| Stud End Shank Diameter | 0.750 INCHES NOMINAL IN |
| Stud End Shank Length | 0.990 INCHES NOMINAL IN |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 16 NUT THREAD |
| Thread Quantity Per Inch | 16 STUD THREAD |
| Material | STEEL COMP 4427 OR STEEL COMP 8640 |
| Distance Across Flats | 0.910 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Shoulder Length | 0.190 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 20X151 | Meritor Heavy Vehicle Systems, Llc (USA) |
| 55TR | Oshkosh Defense Llc (USA) |
| 20X151 PRIMARY | Hme, Inc. Dba Hme Ahrens-Fox (USA) |
| Reference | Meaning |
|---|---|
| 55TR | 5/9 Secondary reference Oshkosh Corp |
| 31782 | 5/9 Secondary reference Alliedsignal Inc Alliedsignal Braking Systems-Wheel End Products |
NSN 5307-00-353-0491 is a Stud,shouldered, manufactured by Hme, Inc. Dba Hme Ahrens-Fox, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-353-0491 has 3 manufacturer part numbers on file: 20X151 (Meritor Heavy Vehicle Systems, Llc), 55TR (Oshkosh Defense Llc), 20X151 (Hme, Inc. Dba Hme Ahrens-Fox).
4 possible matches (shared part number, not a government interchangeability claim): 1680-01-102-0089, 5977-01-163-6378, 6680-01-372-7835. Verify interchangeability with system specifications before substitution.
Key specifications for 20X151: Thread Length: 0.440 INCHES NOMINAL STUD THREAD IN; Thread Length: 1.220 INCHES NOMINAL NUT THREAD IN; Style Designator: SHOULDERED; Overall Length: 3.910 INCHES MINIMUM AND 4.030 INCHES MAXIMUM IN. 19 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.