The Stud,locked in, cataloged under National Stock Number 5307-01-137-7140, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 24 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-137-7140 |
| Primary Part Number | MS51992D502-9 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES NUT THD |
| Surface Finish | 63.0 MICROINCHES SHANK |
| Distance From Serrated Portion to Nut End | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Thread Length | 0.223 INCHES MINIMUM AND 0.293 INCHES MAXIMUM STUD THREAD IN |
| Thread Length | 0.454 INCHES MINIMUM AND 0.484 INCHES MAXIMUM NUT THREAD IN |
| Hardness Rating | 39.0 ROCKWELL C NOMINAL |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.2869 TO 0.2884 INCHES STUD THREAD IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.113 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Serration Included Angle | 101.0 DEGREES MINIMUM AND 104.0 DEGREES MAXIMUM |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Distance From Serrated Portion to Stud End | 0.366 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Locking Feature | RING, LOCK SERRATED |
| Serration Quantity | 13 |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Thread Quantity Per Inch | 24 STUD THREAD |
| Material | NICKEL ALLOY 718 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| Thread Series Designator | UNS 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 |
|---|---|
| MS51992D502-9 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 10116414 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS51992D502-9 | 5/9 Secondary reference U.S. Government activity |
| MS51992D502-9 | 3/9 Design control — primary reference U.S. Government activity |
| SF5902D502-9 | 5/1 Secondary reference U.S. Government activity |
NSN 5307-01-137-7140 is a Stud,locked in, manufactured by Sae International Dba Sae International, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-137-7140 has 1 manufacturer part number on file: MS51992D502-9 (Sae International Dba Sae International).
Key specifications for MS51992D502-9: Surface Finish: 32.0 MICROINCHES NUT THD; Surface Finish: 63.0 MICROINCHES SHANK; Distance From Serrated Portion to Nut End: 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN; Thread Length: 0.223 INCHES MINIMUM AND 0.293 INCHES MAXIMUM STUD THREAD IN. 24 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.