The Stud,shouldered and Stepped, cataloged under National Stock Number 5307-01-100-0449, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 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 | 5307-01-100-0449 |
| Primary Part Number | 12271209 |
| Item Name | Stud,shouldered and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Nut End Shank Diameter | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Thread Length | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 0.910 INCHES NOMINAL STUD THREAD IN |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM |
| Style Designator | SHOULDERED AND STEPPED |
| Material Document and Classification | AMS 5773 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5763 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Stud End Shank Diameter | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Nut End Shank Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Stud End Shank Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL CORROSION RESISTING |
| Distance Across Flats | 0.308 INCHES NOMINAL IN |
| Shoulder Length | 0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 12271209 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5307-01-100-0449 is a Stud,shouldered and Stepped, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-100-0449 has 1 manufacturer part number on file: 12271209 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12271209: Nut End Shank Diameter: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Thread Length: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD IN; Thread Length: 0.910 INCHES NOMINAL STUD THREAD IN; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM. 18 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.