The Stud,recessed and Stepped, cataloged under National Stock Number 5307-01-188-1229, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-188-1229 |
| Primary Part Number | 12339207 |
| Item Name | Stud,recessed and Stepped |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | GM 4435-M,CODE A FSCM 34623 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.850 INCHES MINIMUM AND 0.910 INCHES MAXIMUM NUT THREAD IN |
| Thread Length | 1.150 INCHES MINIMUM AND 1.310 INCHES MAXIMUM STUD THREAD IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTM A322 ASSN STD ALL MATERIAL RESPONSES |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.625 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.500 INCHES NUT THREAD IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 20 NUT THREAD |
| Thread Quantity Per Inch | 11 STUD THREAD |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD 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 |
|---|---|
| 5568298 | Am General Llc (USA) |
| 0722726 | General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels (CHE) |
| EC12339207 | Am General Llc (USA) |
| 12339207 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5307PL0783532 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5307-01-188-1229 is a Stud,recessed and Stepped, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-188-1229 has 4 manufacturer part numbers on file: 5568298 (Am General Llc), 0722726 (General Dynamics European, Land-Systems-Mowag Gmbh Dba Gdels), EC12339207 (Am General Llc), 12339207 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12339207: Surface Treatment Document and Classification: GM 4435-M,CODE A FSCM 34623 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.850 INCHES MINIMUM AND 0.910 INCHES MAXIMUM NUT THREAD IN; Thread Length: 1.150 INCHES MINIMUM AND 1.310 INCHES MAXIMUM STUD THREAD IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM. 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.