The Stud,locked in, cataloged under National Stock Number 5307-01-417-5437, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Penn Engineering & Manufacturing Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-417-5437 |
| Primary Part Number | AESM8-5.1 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Penn Engineering & Manufacturing Corp |
| Status | ACTIVE |
| Thread Tolerance Class | 4H EXTERNAL STUD THREAD |
| Thread Tolerance Class | 4H EXTERNAL NUT THREAD |
| Distance From Serrated Portion to Nut End | 50.750 MILLIMETERS MINIMUM AND 51.250 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.50 STUD THREAD |
| Thread Pitch in Millimeters | 1.25 NUT THREAD |
| Thread Length | 16.7 MILLIMETERS MINIMUM AND 17.3 MILLIMETERS MAXIMUM STUD THREAD MM |
| Thread Length | 18.6 MILLIMETERS MINIMUM AND 19.4 MILLIMETERS MAXIMUM NUT THREAD MM |
| Style Designator | LOCKED IN |
| Distance From Serrated Portion to End of Stud Thread | 5.0 MILLIMETERS NOMINAL MM |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 8.0 MILLIMETERS STUD THREAD MM |
| Nominal Thread Size | 10.0 MILLIMETERS NUT THREAD MM |
| Distance From Serrated Portion to Stud End | 18.6 MILLIMETERS MINIMUM AND 19.4 MILLIMETERS MAXIMUM MM |
| Locking Feature | RING, LOCK SERRATED |
| Material | STEEL COMP 4130 |
| Thread Series Designator | ISO M STUD THREAD |
| Thread Series Designator | ISO M 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 |
|---|---|
| AESM8-5.1 | Penn Engineering & Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| SM8-51 | 5/9 Secondary reference U.S. Government activity |
| RZA-12375-08-51 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5307-01-417-5437 is a Stud,locked in, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-417-5437 has 1 manufacturer part number on file: AESM8-5.1 (Penn Engineering & Manufacturing Corp).
Key specifications for AESM8-5.1: Thread Tolerance Class: 4H EXTERNAL STUD THREAD; Thread Tolerance Class: 4H EXTERNAL NUT THREAD; Distance From Serrated Portion to Nut End: 50.750 MILLIMETERS MINIMUM AND 51.250 MILLIMETERS MAXIMUM MM; Thread Pitch in Millimeters: 1.50 STUD THREAD. 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.